./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/subseq-alloca-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/array-memsafety/subseq-alloca-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 332083c9703e7f789c3b57b3574f68dffe1c5555ad9f8a0d56f0eaba0a86f436 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:14:52,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:14:52,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:14:52,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:14:52,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:14:52,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:14:52,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:14:52,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:14:52,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:14:52,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:14:52,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:14:52,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:14:52,832 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:14:52,833 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:14:52,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:14:52,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:14:52,833 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 -> 332083c9703e7f789c3b57b3574f68dffe1c5555ad9f8a0d56f0eaba0a86f436 [2025-02-08 06:14:53,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:14:53,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:14:53,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:14:53,040 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:14:53,040 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:14:53,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/subseq-alloca-2.i [2025-02-08 06:14:54,162 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3c1f9def/d19cee66c2664c3ea685caeef33bb3db/FLAGdc23cd350 [2025-02-08 06:14:54,457 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:14:54,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/subseq-alloca-2.i [2025-02-08 06:14:54,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3c1f9def/d19cee66c2664c3ea685caeef33bb3db/FLAGdc23cd350 [2025-02-08 06:14:54,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c3c1f9def/d19cee66c2664c3ea685caeef33bb3db [2025-02-08 06:14:54,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:14:54,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:14:54,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:14:54,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:14:54,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:14:54,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:14:54" (1/1) ... [2025-02-08 06:14:54,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77493610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:54, skipping insertion in model container [2025-02-08 06:14:54,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:14:54" (1/1) ... [2025-02-08 06:14:54,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:14:54,984 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:14:54,985 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:14:54,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:14:55,000 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:14:55,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:14:55,056 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:14:55,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55 WrapperNode [2025-02-08 06:14:55,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:14:55,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:14:55,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:14:55,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:14:55,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,080 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2025-02-08 06:14:55,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:14:55,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:14:55,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:14:55,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:14:55,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,099 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [5, 4]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2025-02-08 06:14:55,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,104 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:14:55,108 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:14:55,108 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:14:55,108 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:14:55,108 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (1/1) ... [2025-02-08 06:14:55,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:14:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:55,139 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 06:14:55,141 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 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:14:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:14:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:14:55,226 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:14:55,228 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:14:55,371 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L552: havoc main_#t~ret18#1;call ULTIMATE.dealloc(main_#t~malloc12#1.base, main_#t~malloc12#1.offset);havoc main_#t~malloc12#1.base, main_#t~malloc12#1.offset;call ULTIMATE.dealloc(main_#t~malloc13#1.base, main_#t~malloc13#1.offset);havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset; [2025-02-08 06:14:55,371 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L552-1: assume #valid == main_old_#valid#1;assume #valid == main_old_#valid#1;#t~ret19#1 := main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~malloc12#1.base, main_#t~malloc12#1.offset, main_#t~malloc13#1.base, main_#t~malloc13#1.offset, main_#t~nondet14#1, main_#t~post15#1, main_~i~0#1, main_#t~nondet16#1, main_#t~post17#1, main_~i~1#1, main_#t~ret18#1, main_~length1~0#1, main_~length2~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset;assume { :end_inline_main } true; [2025-02-08 06:14:55,371 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L552-1: assume !(#valid == main_old_#valid#1); [2025-02-08 06:14:55,371 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L552-2: main_#t~ret18#1 := subseq_#res#1;havoc subseq_#t~mem2#1, subseq_#t~mem3#1, subseq_#t~short4#1, subseq_#t~mem5#1, subseq_#t~mem6#1, subseq_#t~post7#1.base, subseq_#t~post7#1.offset, subseq_#t~post8#1.base, subseq_#t~post8#1.offset, subseq_#t~mem9#1, subseq_~s#1.base, subseq_~s#1.offset, subseq_~t#1.base, subseq_~t#1.offset, subseq_~ps~0#1.base, subseq_~ps~0#1.offset, subseq_~pt~0#1.base, subseq_~pt~0#1.offset;havoc subseq_#in~s#1.base, subseq_#in~s#1.offset, subseq_#in~t#1.base, subseq_#in~t#1.offset;assume { :end_inline_subseq } true;assume -2147483648 <= main_#t~ret18#1 && main_#t~ret18#1 <= 2147483647;main_#res#1 := main_#t~ret18#1;havoc main_#t~ret18#1;call ULTIMATE.dealloc(main_#t~malloc12#1.base, main_#t~malloc12#1.offset);havoc main_#t~malloc12#1.base, main_#t~malloc12#1.offset;call ULTIMATE.dealloc(main_#t~malloc13#1.base, main_#t~malloc13#1.offset);havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset; [2025-02-08 06:14:55,372 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2025-02-08 06:14:55,380 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2025-02-08 06:14:55,380 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:14:55,386 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:14:55,387 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:14:55,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:14:55 BoogieIcfgContainer [2025-02-08 06:14:55,387 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:14:55,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:14:55,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:14:55,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:14:55,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:14:54" (1/3) ... [2025-02-08 06:14:55,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547cc827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:14:55, skipping insertion in model container [2025-02-08 06:14:55,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:14:55" (2/3) ... [2025-02-08 06:14:55,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547cc827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:14:55, skipping insertion in model container [2025-02-08 06:14:55,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:14:55" (3/3) ... [2025-02-08 06:14:55,395 INFO L128 eAbstractionObserver]: Analyzing ICFG subseq-alloca-2.i [2025-02-08 06:14:55,408 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:14:55,409 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG subseq-alloca-2.i that has 1 procedures, 46 locations, 1 initial locations, 3 loop locations, and 19 error locations. [2025-02-08 06:14:55,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:14:55,452 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;@22b26f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:14:55,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-02-08 06:14:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 44 states have internal predecessors, (53), 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 06:14:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:14:55,463 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:55,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:14:55,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:55,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1664010916, now seen corresponding path program 1 times [2025-02-08 06:14:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075795231] [2025-02-08 06:14:55,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:55,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:14:55,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:14:55,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:55,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:55,680 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 06:14:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075795231] [2025-02-08 06:14:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075795231] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:55,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:14:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098137749] [2025-02-08 06:14:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:55,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:55,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:55,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:55,704 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:14:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:55,745 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2025-02-08 06:14:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:55,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2025-02-08 06:14:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:55,752 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:14:55,752 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 06:14:55,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:55,756 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:55,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 133 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 06:14:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2025-02-08 06:14:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 45 states have internal predecessors, (53), 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 06:14:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2025-02-08 06:14:55,779 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2025-02-08 06:14:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:55,779 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2025-02-08 06:14:55,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:14:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2025-02-08 06:14:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:14:55,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:55,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:14:55,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:14:55,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:55,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1663087395, now seen corresponding path program 1 times [2025-02-08 06:14:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467174497] [2025-02-08 06:14:55,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:55,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:14:55,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:14:55,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:55,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:55,902 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 06:14:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467174497] [2025-02-08 06:14:55,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467174497] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:55,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:55,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:14:55,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361303468] [2025-02-08 06:14:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:55,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:14:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:55,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:14:55,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:14:55,909 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 06:14:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:55,944 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2025-02-08 06:14:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:14:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2025-02-08 06:14:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:55,944 INFO L225 Difference]: With dead ends: 44 [2025-02-08 06:14:55,944 INFO L226 Difference]: Without dead ends: 44 [2025-02-08 06:14:55,945 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 06:14:55,945 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:55,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 57 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-08 06:14:55,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-08 06:14:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 43 states have internal predecessors, (51), 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 06:14:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2025-02-08 06:14:55,948 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 6 [2025-02-08 06:14:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:55,948 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2025-02-08 06:14:55,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 06:14:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2025-02-08 06:14:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:14:55,948 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:55,948 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:14:55,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:14:55,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:55,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1663087394, now seen corresponding path program 1 times [2025-02-08 06:14:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31001305] [2025-02-08 06:14:55,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:55,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:14:55,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:14:55,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:55,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,165 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 06:14:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31001305] [2025-02-08 06:14:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31001305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72643909] [2025-02-08 06:14:56,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:14:56,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:14:56,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:14:56,166 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:14:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,256 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2025-02-08 06:14:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:14:56,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2025-02-08 06:14:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,258 INFO L225 Difference]: With dead ends: 47 [2025-02-08 06:14:56,258 INFO L226 Difference]: Without dead ends: 47 [2025-02-08 06:14:56,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:14:56,259 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:14:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-08 06:14:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-02-08 06:14:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.8) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2025-02-08 06:14:56,266 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 6 [2025-02-08 06:14:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,267 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2025-02-08 06:14:56,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 06:14:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2025-02-08 06:14:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:14:56,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 06:14:56,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash -44735887, now seen corresponding path program 1 times [2025-02-08 06:14:56,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093971829] [2025-02-08 06:14:56,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:14:56,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:14:56,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,418 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 06:14:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093971829] [2025-02-08 06:14:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093971829] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535489703] [2025-02-08 06:14:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:56,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:56,419 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,441 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2025-02-08 06:14:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:56,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:14:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,443 INFO L225 Difference]: With dead ends: 52 [2025-02-08 06:14:56,443 INFO L226 Difference]: Without dead ends: 52 [2025-02-08 06:14:56,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:56,443 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 83 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-08 06:14:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2025-02-08 06:14:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 49 states have internal predecessors, (61), 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 06:14:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2025-02-08 06:14:56,449 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 7 [2025-02-08 06:14:56,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,450 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2025-02-08 06:14:56,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2025-02-08 06:14:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:14:56,450 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,450 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 06:14:56,451 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -44735728, now seen corresponding path program 1 times [2025-02-08 06:14:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157305432] [2025-02-08 06:14:56,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:14:56,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:14:56,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,491 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 06:14:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157305432] [2025-02-08 06:14:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157305432] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:14:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872375457] [2025-02-08 06:14:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:56,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:56,493 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,513 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2025-02-08 06:14:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:14:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,514 INFO L225 Difference]: With dead ends: 66 [2025-02-08 06:14:56,515 INFO L226 Difference]: Without dead ends: 66 [2025-02-08 06:14:56,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:56,515 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-08 06:14:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2025-02-08 06:14:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 59 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2025-02-08 06:14:56,522 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 7 [2025-02-08 06:14:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,522 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2025-02-08 06:14:56,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2025-02-08 06:14:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:14:56,522 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 06:14:56,522 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -43812207, now seen corresponding path program 1 times [2025-02-08 06:14:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557487954] [2025-02-08 06:14:56,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:14:56,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:14:56,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,564 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 06:14:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557487954] [2025-02-08 06:14:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557487954] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:14:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502590041] [2025-02-08 06:14:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:14:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:14:56,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:14:56,566 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,586 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-02-08 06:14:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:14:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:14:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,586 INFO L225 Difference]: With dead ends: 58 [2025-02-08 06:14:56,587 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 06:14:56,587 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 06:14:56,587 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 06:14:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-02-08 06:14:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 57 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2025-02-08 06:14:56,590 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 7 [2025-02-08 06:14:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,590 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2025-02-08 06:14:56,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2025-02-08 06:14:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:14:56,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 06:14:56,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash -43812206, now seen corresponding path program 1 times [2025-02-08 06:14:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88789435] [2025-02-08 06:14:56,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:14:56,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:14:56,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,719 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 06:14:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88789435] [2025-02-08 06:14:56,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88789435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:14:56,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455911466] [2025-02-08 06:14:56,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:14:56,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:14:56,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:14:56,721 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,782 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2025-02-08 06:14:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:14:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:14:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,784 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:14:56,785 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:14:56,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:14:56,785 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 79 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:14:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2025-02-08 06:14:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 61 states have internal predecessors, (77), 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 06:14:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-08 06:14:56,791 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 7 [2025-02-08 06:14:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,791 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-08 06:14:56,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-08 06:14:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:14:56,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 06:14:56,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash -16106736, now seen corresponding path program 1 times [2025-02-08 06:14:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404479880] [2025-02-08 06:14:56,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:14:56,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:14:56,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:56,899 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 06:14:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404479880] [2025-02-08 06:14:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404479880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:56,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:14:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413140968] [2025-02-08 06:14:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:56,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:14:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:56,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:14:56,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:14:56,901 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,944 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2025-02-08 06:14:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:14:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:14:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,945 INFO L225 Difference]: With dead ends: 72 [2025-02-08 06:14:56,946 INFO L226 Difference]: Without dead ends: 72 [2025-02-08 06:14:56,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:14:56,946 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:56,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-08 06:14:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2025-02-08 06:14:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 61 states have internal predecessors, (77), 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 06:14:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-08 06:14:56,949 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 7 [2025-02-08 06:14:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,949 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-08 06:14:56,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-08 06:14:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:14:56,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 06:14:56,950 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:56,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1386812521, now seen corresponding path program 1 times [2025-02-08 06:14:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603317529] [2025-02-08 06:14:56,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:14:56,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:14:56,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:56,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,010 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 06:14:57,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:57,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603317529] [2025-02-08 06:14:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603317529] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:57,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302705832] [2025-02-08 06:14:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:57,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:57,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:57,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:57,012 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 06:14:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:57,029 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2025-02-08 06:14:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2025-02-08 06:14:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:57,030 INFO L225 Difference]: With dead ends: 67 [2025-02-08 06:14:57,030 INFO L226 Difference]: Without dead ends: 67 [2025-02-08 06:14:57,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:57,030 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:57,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-08 06:14:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-02-08 06:14:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.588235294117647) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2025-02-08 06:14:57,033 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 8 [2025-02-08 06:14:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:57,033 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2025-02-08 06:14:57,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 06:14:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2025-02-08 06:14:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:14:57,034 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:57,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:57,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 06:14:57,034 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:57,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1358183370, now seen corresponding path program 1 times [2025-02-08 06:14:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:57,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41286250] [2025-02-08 06:14:57,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:57,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:57,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:14:57,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:14:57,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:57,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,113 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 06:14:57,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:57,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41286250] [2025-02-08 06:14:57,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41286250] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:57,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867992142] [2025-02-08 06:14:57,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:57,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:14:57,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:57,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:14:57,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:14:57,114 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:14:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:57,134 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2025-02-08 06:14:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:14:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2025-02-08 06:14:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:57,135 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:14:57,135 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:14:57,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:14:57,135 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:57,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 61 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:14:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2025-02-08 06:14:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 60 states have internal predecessors, (76), 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 06:14:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2025-02-08 06:14:57,138 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 8 [2025-02-08 06:14:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:57,138 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2025-02-08 06:14:57,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:14:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2025-02-08 06:14:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:14:57,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:57,138 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:57,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 06:14:57,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:57,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:57,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1706161204, now seen corresponding path program 1 times [2025-02-08 06:14:57,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:57,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842645980] [2025-02-08 06:14:57,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:57,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:57,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:14:57,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:14:57,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:57,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:57,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842645980] [2025-02-08 06:14:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842645980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671962871] [2025-02-08 06:14:57,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:57,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:57,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:57,313 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 06:14:57,314 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 06:14:57,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:14:57,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:14:57,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:57,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 06:14:57,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:57,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:14:57,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2025-02-08 06:14:57,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-08 06:14:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:57,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:57,775 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:14:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671962871] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:57,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-08 06:14:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751135183] [2025-02-08 06:14:57,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:57,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:14:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:57,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:14:57,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:14:57,806 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:57,968 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2025-02-08 06:14:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:14:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:14:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:57,969 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:14:57,969 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:14:57,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:14:57,969 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:57,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 146 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:14:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:14:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2025-02-08 06:14:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.565217391304348) internal successors, (72), 57 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2025-02-08 06:14:57,971 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 9 [2025-02-08 06:14:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:57,971 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2025-02-08 06:14:57,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2025-02-08 06:14:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:14:57,972 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:57,972 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:57,981 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 06:14:58,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 06:14:58,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:58,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 460612282, now seen corresponding path program 1 times [2025-02-08 06:14:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448564705] [2025-02-08 06:14:58,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:58,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:14:58,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:14:58,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:58,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:58,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448564705] [2025-02-08 06:14:58,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448564705] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:58,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533141393] [2025-02-08 06:14:58,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:58,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:58,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:58,396 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 06:14:58,398 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 06:14:58,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:14:58,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:14:58,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:58,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:58,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 06:14:58,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:58,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2025-02-08 06:14:58,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:14:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:58,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533141393] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:58,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2025-02-08 06:14:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815875633] [2025-02-08 06:14:58,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:58,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:14:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:58,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:14:58,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:14:58,734 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:58,905 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2025-02-08 06:14:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:14:58,906 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 06:14:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:58,906 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:14:58,906 INFO L226 Difference]: Without dead ends: 61 [2025-02-08 06:14:58,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2025-02-08 06:14:58,907 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:58,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 191 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:14:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-08 06:14:58,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2025-02-08 06:14:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2025-02-08 06:14:58,909 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2025-02-08 06:14:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:58,909 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2025-02-08 06:14:58,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2025-02-08 06:14:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:14:58,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:58,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:58,915 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 06:14:59,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:59,114 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1351384698, now seen corresponding path program 1 times [2025-02-08 06:14:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423139680] [2025-02-08 06:14:59,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:14:59,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:14:59,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423139680] [2025-02-08 06:14:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423139680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:14:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663612377] [2025-02-08 06:14:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:14:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:14:59,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:14:59,281 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,309 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2025-02-08 06:14:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:14:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 06:14:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,310 INFO L225 Difference]: With dead ends: 52 [2025-02-08 06:14:59,310 INFO L226 Difference]: Without dead ends: 52 [2025-02-08 06:14:59,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:14:59,311 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-08 06:14:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2025-02-08 06:14:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 44 states have internal predecessors, (53), 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 06:14:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2025-02-08 06:14:59,313 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 10 [2025-02-08 06:14:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,313 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2025-02-08 06:14:59,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2025-02-08 06:14:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:14:59,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 06:14:59,314 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1241417779, now seen corresponding path program 1 times [2025-02-08 06:14:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685697704] [2025-02-08 06:14:59,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:14:59,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:14:59,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,407 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 06:14:59,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685697704] [2025-02-08 06:14:59,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685697704] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:14:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981021056] [2025-02-08 06:14:59,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:14:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:14:59,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:14:59,408 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,480 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2025-02-08 06:14:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:14:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-08 06:14:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,481 INFO L225 Difference]: With dead ends: 72 [2025-02-08 06:14:59,481 INFO L226 Difference]: Without dead ends: 72 [2025-02-08 06:14:59,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:14:59,481 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 89 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:14:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-08 06:14:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2025-02-08 06:14:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 55 states have internal predecessors, (73), 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 06:14:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2025-02-08 06:14:59,483 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 11 [2025-02-08 06:14:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,483 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2025-02-08 06:14:59,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2025-02-08 06:14:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:14:59,486 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,486 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 06:14:59,486 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1241417780, now seen corresponding path program 1 times [2025-02-08 06:14:59,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524652837] [2025-02-08 06:14:59,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:14:59,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:14:59,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,523 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 06:14:59,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524652837] [2025-02-08 06:14:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524652837] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:59,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371686977] [2025-02-08 06:14:59,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:59,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:59,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:59,524 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,549 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2025-02-08 06:14:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-08 06:14:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,550 INFO L225 Difference]: With dead ends: 54 [2025-02-08 06:14:59,550 INFO L226 Difference]: Without dead ends: 54 [2025-02-08 06:14:59,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:59,551 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 50 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-08 06:14:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-02-08 06:14:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.5) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2025-02-08 06:14:59,553 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 11 [2025-02-08 06:14:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,553 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2025-02-08 06:14:59,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2025-02-08 06:14:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:14:59,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 06:14:59,554 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,555 INFO L85 PathProgramCache]: Analyzing trace with hash 886300816, now seen corresponding path program 1 times [2025-02-08 06:14:59,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812859379] [2025-02-08 06:14:59,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 06:14:59,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 06:14:59,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,613 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 06:14:59,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812859379] [2025-02-08 06:14:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812859379] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:59,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909291431] [2025-02-08 06:14:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:14:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:14:59,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:59,615 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,638 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2025-02-08 06:14:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:14:59,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-08 06:14:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,638 INFO L225 Difference]: With dead ends: 51 [2025-02-08 06:14:59,638 INFO L226 Difference]: Without dead ends: 51 [2025-02-08 06:14:59,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:14:59,639 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 48 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-08 06:14:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-08 06:14:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.391304347826087) internal successors, (64), 50 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2025-02-08 06:14:59,642 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 14 [2025-02-08 06:14:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,642 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2025-02-08 06:14:59,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2025-02-08 06:14:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:14:59,643 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 06:14:59,643 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 886300817, now seen corresponding path program 1 times [2025-02-08 06:14:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292464367] [2025-02-08 06:14:59,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 06:14:59,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 06:14:59,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,735 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 06:14:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292464367] [2025-02-08 06:14:59,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292464367] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:14:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846572194] [2025-02-08 06:14:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:14:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:14:59,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:14:59,736 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,785 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2025-02-08 06:14:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:14:59,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-08 06:14:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,785 INFO L225 Difference]: With dead ends: 68 [2025-02-08 06:14:59,785 INFO L226 Difference]: Without dead ends: 67 [2025-02-08 06:14:59,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:14:59,786 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 75 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-08 06:14:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2025-02-08 06:14:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 59 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2025-02-08 06:14:59,787 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 14 [2025-02-08 06:14:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,787 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2025-02-08 06:14:59,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,787 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2025-02-08 06:14:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 06:14:59,788 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,788 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 06:14:59,788 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -205116890, now seen corresponding path program 1 times [2025-02-08 06:14:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947101332] [2025-02-08 06:14:59,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:14:59,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:14:59,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947101332] [2025-02-08 06:14:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947101332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:14:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72373200] [2025-02-08 06:14:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:14:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:14:59,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:14:59,805 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:59,811 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2025-02-08 06:14:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:14:59,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-08 06:14:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:59,811 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:14:59,811 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:14:59,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:14:59,812 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:59,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:14:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:14:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2025-02-08 06:14:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2025-02-08 06:14:59,813 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 20 [2025-02-08 06:14:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2025-02-08 06:14:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2025-02-08 06:14:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 06:14:59,814 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:59,814 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:59,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 06:14:59,814 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:59,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash 819755944, now seen corresponding path program 1 times [2025-02-08 06:14:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625860447] [2025-02-08 06:14:59,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:14:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:59,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:14:59,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:14:59,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:59,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:59,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:59,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625860447] [2025-02-08 06:14:59,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625860447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:14:59,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:14:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:14:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020039364] [2025-02-08 06:14:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:14:59,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:14:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:59,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:14:59,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:14:59,976 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:00,029 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2025-02-08 06:15:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:15:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-08 06:15:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:00,030 INFO L225 Difference]: With dead ends: 72 [2025-02-08 06:15:00,030 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:15:00,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:15:00,030 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:00,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 182 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:15:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:15:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-02-08 06:15:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 55 states have internal predecessors, (67), 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 06:15:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2025-02-08 06:15:00,032 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 22 [2025-02-08 06:15:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:00,032 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2025-02-08 06:15:00,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2025-02-08 06:15:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 06:15:00,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:00,032 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:00,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 06:15:00,033 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:00,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1031106857, now seen corresponding path program 1 times [2025-02-08 06:15:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288258717] [2025-02-08 06:15:00,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:00,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:00,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:15:00,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:15:00,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:00,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288258717] [2025-02-08 06:15:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288258717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:15:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:15:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 06:15:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588451567] [2025-02-08 06:15:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:15:00,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:15:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:00,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:15:00,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:15:00,177 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:00,231 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2025-02-08 06:15:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:15:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-08 06:15:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:00,232 INFO L225 Difference]: With dead ends: 73 [2025-02-08 06:15:00,232 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:15:00,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:15:00,232 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:00,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 144 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:15:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:15:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-02-08 06:15:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2025-02-08 06:15:00,234 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 22 [2025-02-08 06:15:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:00,234 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2025-02-08 06:15:00,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2025-02-08 06:15:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-08 06:15:00,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:00,234 INFO L218 NwaCegarLoop]: trace histogram [2, 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 06:15:00,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 06:15:00,234 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:00,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash 187346047, now seen corresponding path program 1 times [2025-02-08 06:15:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:00,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518469692] [2025-02-08 06:15:00,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:00,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:00,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 06:15:00,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 06:15:00,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:00,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518469692] [2025-02-08 06:15:00,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518469692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465966933] [2025-02-08 06:15:00,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:00,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:00,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:00,356 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 06:15:00,358 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 06:15:00,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 06:15:00,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 06:15:00,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:00,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:00,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 06:15:00,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:00,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:00,629 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 5 treesize of output 3 [2025-02-08 06:15:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465966933] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:00,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-02-08 06:15:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449258375] [2025-02-08 06:15:00,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:00,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:15:00,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:00,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:15:00,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:15:00,652 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 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 06:15:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:00,758 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2025-02-08 06:15:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:15:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-08 06:15:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:00,758 INFO L225 Difference]: With dead ends: 85 [2025-02-08 06:15:00,758 INFO L226 Difference]: Without dead ends: 85 [2025-02-08 06:15:00,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:15:00,759 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 72 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:00,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 199 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-08 06:15:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2025-02-08 06:15:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2025-02-08 06:15:00,761 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 25 [2025-02-08 06:15:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:00,761 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2025-02-08 06:15:00,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 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 06:15:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2025-02-08 06:15:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 06:15:00,762 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:00,762 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:00,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:00,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:00,963 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:00,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2063537823, now seen corresponding path program 1 times [2025-02-08 06:15:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245305167] [2025-02-08 06:15:00,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:00,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:15:00,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:15:00,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:00,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245305167] [2025-02-08 06:15:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245305167] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941015650] [2025-02-08 06:15:01,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:01,178 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 06:15:01,179 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 06:15:01,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:15:01,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:15:01,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:01,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:01,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 06:15:01,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:01,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:01,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:01,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:01,361 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 16 treesize of output 12 [2025-02-08 06:15:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941015650] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:01,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2025-02-08 06:15:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473473351] [2025-02-08 06:15:01,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:01,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:15:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:01,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:15:01,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:15:01,403 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:01,539 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2025-02-08 06:15:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 06:15:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-08 06:15:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:01,540 INFO L225 Difference]: With dead ends: 110 [2025-02-08 06:15:01,540 INFO L226 Difference]: Without dead ends: 110 [2025-02-08 06:15:01,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:15:01,541 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:01,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 317 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-08 06:15:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2025-02-08 06:15:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 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 06:15:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2025-02-08 06:15:01,543 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 28 [2025-02-08 06:15:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:01,544 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2025-02-08 06:15:01,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2025-02-08 06:15:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 06:15:01,544 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:01,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:01,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:01,749 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,SelfDestructingSolverStorable21 [2025-02-08 06:15:01,749 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:01,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1343925792, now seen corresponding path program 1 times [2025-02-08 06:15:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:01,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434959893] [2025-02-08 06:15:01,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:01,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:15:01,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:15:01,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:01,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:01,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434959893] [2025-02-08 06:15:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434959893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:15:01,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:15:01,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:15:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274256334] [2025-02-08 06:15:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:15:01,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:15:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:01,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:15:01,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:15:01,872 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 06:15:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:01,916 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2025-02-08 06:15:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:15:01,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2025-02-08 06:15:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:01,916 INFO L225 Difference]: With dead ends: 118 [2025-02-08 06:15:01,916 INFO L226 Difference]: Without dead ends: 88 [2025-02-08 06:15:01,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:15:01,917 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:01,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:15:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-08 06:15:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-02-08 06:15:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 87 states have internal predecessors, (104), 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 06:15:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2025-02-08 06:15:01,919 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 28 [2025-02-08 06:15:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:01,919 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2025-02-08 06:15:01,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 06:15:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2025-02-08 06:15:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 06:15:01,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:01,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:01,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 06:15:01,919 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:01,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1312905985, now seen corresponding path program 1 times [2025-02-08 06:15:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584762063] [2025-02-08 06:15:01,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:01,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:15:01,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:15:01,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:01,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:02,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:02,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584762063] [2025-02-08 06:15:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584762063] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:02,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019673370] [2025-02-08 06:15:02,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:02,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:02,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:02,154 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 06:15:02,155 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 06:15:02,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:15:02,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:15:02,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:02,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 06:15:02,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:02,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:15:02,375 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:15:02,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:02,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2025-02-08 06:15:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:02,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:15:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019673370] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:15:02,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:15:02,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2025-02-08 06:15:02,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509415220] [2025-02-08 06:15:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:15:02,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:15:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:02,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:15:02,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:15:02,402 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 06:15:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:02,495 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2025-02-08 06:15:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:15:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2025-02-08 06:15:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:02,496 INFO L225 Difference]: With dead ends: 114 [2025-02-08 06:15:02,496 INFO L226 Difference]: Without dead ends: 94 [2025-02-08 06:15:02,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:15:02,496 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:02,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 118 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-08 06:15:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2025-02-08 06:15:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 89 states have internal predecessors, (106), 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 06:15:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2025-02-08 06:15:02,498 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 28 [2025-02-08 06:15:02,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:02,498 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2025-02-08 06:15:02,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 06:15:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2025-02-08 06:15:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 06:15:02,498 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:02,499 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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 06:15:02,506 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 06:15:02,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 06:15:02,703 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:02,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -168553863, now seen corresponding path program 1 times [2025-02-08 06:15:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974994305] [2025-02-08 06:15:02,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:02,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 06:15:02,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 06:15:02,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:02,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974994305] [2025-02-08 06:15:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974994305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40335791] [2025-02-08 06:15:02,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:02,847 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 06:15:02,848 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 06:15:02,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 06:15:02,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 06:15:02,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:02,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 06:15:02,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:02,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:03,071 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 5 treesize of output 3 [2025-02-08 06:15:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40335791] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:03,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:03,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-02-08 06:15:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566827834] [2025-02-08 06:15:03,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:03,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:15:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:03,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:15:03,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:15:03,095 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:03,196 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2025-02-08 06:15:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:15:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-08 06:15:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:03,197 INFO L225 Difference]: With dead ends: 141 [2025-02-08 06:15:03,197 INFO L226 Difference]: Without dead ends: 133 [2025-02-08 06:15:03,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:15:03,198 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:03,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 222 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-02-08 06:15:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2025-02-08 06:15:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 108 states have internal predecessors, (121), 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 06:15:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 121 transitions. [2025-02-08 06:15:03,201 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 121 transitions. Word has length 31 [2025-02-08 06:15:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 121 transitions. [2025-02-08 06:15:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 121 transitions. [2025-02-08 06:15:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:15:03,203 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:03,203 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:03,209 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 06:15:03,403 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,SelfDestructingSolverStorable24 [2025-02-08 06:15:03,404 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:03,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2092641489, now seen corresponding path program 2 times [2025-02-08 06:15:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:03,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265537921] [2025-02-08 06:15:03,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:03,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:03,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 06:15:03,420 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:15:03,420 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:03,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265537921] [2025-02-08 06:15:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265537921] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656795477] [2025-02-08 06:15:03,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:03,767 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 06:15:03,769 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 06:15:03,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 06:15:03,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:15:03,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:03,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:03,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 06:15:03,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:03,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:03,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:03,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:03,997 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 16 treesize of output 12 [2025-02-08 06:15:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656795477] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:04,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-02-08 06:15:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995941240] [2025-02-08 06:15:04,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:04,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 06:15:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:04,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 06:15:04,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:15:04,046 INFO L87 Difference]: Start difference. First operand 109 states and 121 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:04,394 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2025-02-08 06:15:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 06:15:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-08 06:15:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:04,395 INFO L225 Difference]: With dead ends: 233 [2025-02-08 06:15:04,395 INFO L226 Difference]: Without dead ends: 176 [2025-02-08 06:15:04,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 06:15:04,396 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:04,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 454 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:15:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-02-08 06:15:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2025-02-08 06:15:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 148 states have (on average 1.1216216216216217) internal successors, (166), 150 states have internal predecessors, (166), 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 06:15:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2025-02-08 06:15:04,399 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 42 [2025-02-08 06:15:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:04,399 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2025-02-08 06:15:04,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2025-02-08 06:15:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 06:15:04,399 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:04,399 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:04,408 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 06:15:04,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:04,604 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:04,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1586376755, now seen corresponding path program 1 times [2025-02-08 06:15:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375747991] [2025-02-08 06:15:04,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:04,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 06:15:04,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:15:04,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:04,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:15:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375747991] [2025-02-08 06:15:04,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375747991] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664428188] [2025-02-08 06:15:04,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:15:04,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:04,755 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 06:15:04,757 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 06:15:04,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 06:15:04,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:15:04,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:04,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:04,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 06:15:04,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:15:04,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:05,080 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 5 treesize of output 3 [2025-02-08 06:15:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:15:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664428188] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:05,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2025-02-08 06:15:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535207400] [2025-02-08 06:15:05,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:05,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:15:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:05,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:15:05,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:15:05,115 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:05,322 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2025-02-08 06:15:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:15:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-02-08 06:15:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:05,326 INFO L225 Difference]: With dead ends: 191 [2025-02-08 06:15:05,326 INFO L226 Difference]: Without dead ends: 191 [2025-02-08 06:15:05,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:15:05,326 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:05,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 498 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:15:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-02-08 06:15:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 165. [2025-02-08 06:15:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.123456790123457) internal successors, (182), 164 states have internal predecessors, (182), 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 06:15:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2025-02-08 06:15:05,333 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 45 [2025-02-08 06:15:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:05,333 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2025-02-08 06:15:05,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2025-02-08 06:15:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-08 06:15:05,335 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:05,335 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:05,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:05,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 06:15:05,540 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:05,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash 329806975, now seen corresponding path program 3 times [2025-02-08 06:15:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612184473] [2025-02-08 06:15:05,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:05,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 4 equivalence classes. [2025-02-08 06:15:05,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 06:15:05,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:15:05,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:07,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612184473] [2025-02-08 06:15:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612184473] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268513848] [2025-02-08 06:15:07,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:07,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:07,111 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 06:15:07,113 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 06:15:07,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 4 equivalence classes. [2025-02-08 06:15:07,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 06:15:07,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:15:07,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:07,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-08 06:15:07,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:07,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:07,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:07,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:07,495 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 16 treesize of output 12 [2025-02-08 06:15:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268513848] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:07,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 33 [2025-02-08 06:15:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941523506] [2025-02-08 06:15:07,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:07,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 06:15:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:07,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 06:15:07,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 06:15:07,559 INFO L87 Difference]: Start difference. First operand 165 states and 182 transitions. Second operand has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 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 06:15:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:08,269 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions. [2025-02-08 06:15:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 06:15:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-02-08 06:15:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:08,270 INFO L225 Difference]: With dead ends: 268 [2025-02-08 06:15:08,270 INFO L226 Difference]: Without dead ends: 177 [2025-02-08 06:15:08,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 06:15:08,271 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:08,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 529 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:15:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-02-08 06:15:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2025-02-08 06:15:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 168 states have (on average 1.119047619047619) internal successors, (188), 170 states have internal predecessors, (188), 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 06:15:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 188 transitions. [2025-02-08 06:15:08,275 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 188 transitions. Word has length 56 [2025-02-08 06:15:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:08,275 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 188 transitions. [2025-02-08 06:15:08,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 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 06:15:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 188 transitions. [2025-02-08 06:15:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 06:15:08,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:08,276 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:08,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:08,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:08,476 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:08,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1522222841, now seen corresponding path program 4 times [2025-02-08 06:15:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734898663] [2025-02-08 06:15:08,477 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:08,483 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 59 statements into 2 equivalence classes. [2025-02-08 06:15:08,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 53 of 59 statements. [2025-02-08 06:15:08,497 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:08,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734898663] [2025-02-08 06:15:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734898663] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148910812] [2025-02-08 06:15:09,206 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:09,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:09,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:09,208 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:09,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:15:09,260 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 59 statements into 2 equivalence classes. [2025-02-08 06:15:09,283 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 53 of 59 statements. [2025-02-08 06:15:09,283 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:09,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:09,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-08 06:15:09,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:09,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:15:10,729 INFO L349 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2025-02-08 06:15:10,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2025-02-08 06:15:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-08 06:15:10,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:11,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2025-02-08 06:15:11,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2025-02-08 06:15:11,455 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 5 treesize of output 3 [2025-02-08 06:15:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-08 06:15:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148910812] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:11,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 47 [2025-02-08 06:15:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287938882] [2025-02-08 06:15:11,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:11,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-08 06:15:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:11,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-08 06:15:11,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1983, Unknown=1, NotChecked=0, Total=2256 [2025-02-08 06:15:11,474 INFO L87 Difference]: Start difference. First operand 171 states and 188 transitions. Second operand has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 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 06:15:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:12,302 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2025-02-08 06:15:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 06:15:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-08 06:15:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:12,303 INFO L225 Difference]: With dead ends: 199 [2025-02-08 06:15:12,303 INFO L226 Difference]: Without dead ends: 132 [2025-02-08 06:15:12,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=493, Invalid=3046, Unknown=1, NotChecked=0, Total=3540 [2025-02-08 06:15:12,305 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:12,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 462 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:15:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-08 06:15:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 61. [2025-02-08 06:15:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 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 06:15:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2025-02-08 06:15:12,306 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 59 [2025-02-08 06:15:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:12,306 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2025-02-08 06:15:12,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.893617021276596) internal successors, (136), 48 states have internal predecessors, (136), 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 06:15:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2025-02-08 06:15:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 06:15:12,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:12,307 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:12,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:15:12,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 06:15:12,507 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:12,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash -412342050, now seen corresponding path program 2 times [2025-02-08 06:15:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824804626] [2025-02-08 06:15:12,508 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:12,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:12,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-08 06:15:12,521 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 06:15:12,521 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:12,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824804626] [2025-02-08 06:15:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824804626] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201738213] [2025-02-08 06:15:12,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:12,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:12,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:12,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:12,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:15:12,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-08 06:15:12,858 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 06:15:12,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:12,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:12,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-02-08 06:15:12,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:13,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 06:15:13,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:13,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 06:15:13,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-02-08 06:15:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:13,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:13,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2025-02-08 06:15:13,782 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 46 treesize of output 42 [2025-02-08 06:15:13,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-02-08 06:15:13,851 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 102 treesize of output 94 [2025-02-08 06:15:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 06:15:13,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201738213] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:13,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:13,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 20] total 52 [2025-02-08 06:15:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690490504] [2025-02-08 06:15:13,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:13,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-08 06:15:13,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:13,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-08 06:15:13,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 06:15:13,984 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 52 states have internal predecessors, (155), 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 06:15:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:14,640 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2025-02-08 06:15:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 06:15:14,644 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 52 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-08 06:15:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:14,644 INFO L225 Difference]: With dead ends: 136 [2025-02-08 06:15:14,644 INFO L226 Difference]: Without dead ends: 66 [2025-02-08 06:15:14,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=322, Invalid=4370, Unknown=0, NotChecked=0, Total=4692 [2025-02-08 06:15:14,646 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:14,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 486 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:15:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-08 06:15:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2025-02-08 06:15:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2025-02-08 06:15:14,648 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 59 [2025-02-08 06:15:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:14,649 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2025-02-08 06:15:14,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.980769230769231) internal successors, (155), 52 states have internal predecessors, (155), 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 06:15:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2025-02-08 06:15:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 06:15:14,649 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:14,649 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:14,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 06:15:14,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:14,850 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:14,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1826607706, now seen corresponding path program 3 times [2025-02-08 06:15:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:14,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188773938] [2025-02-08 06:15:14,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:14,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 4 equivalence classes. [2025-02-08 06:15:14,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 06:15:14,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:15:14,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188773938] [2025-02-08 06:15:15,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188773938] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301778739] [2025-02-08 06:15:15,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:15,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:15,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:15,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:15,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 06:15:15,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 4 equivalence classes. [2025-02-08 06:15:15,176 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 06:15:15,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:15:15,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:15,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 06:15:15,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:15,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:15,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-02-08 06:15:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301778739] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:15,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 06:15:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454244789] [2025-02-08 06:15:15,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:15,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 06:15:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:15,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 06:15:15,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:15:15,458 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:15,577 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2025-02-08 06:15:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:15:15,578 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-08 06:15:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:15,578 INFO L225 Difference]: With dead ends: 89 [2025-02-08 06:15:15,578 INFO L226 Difference]: Without dead ends: 89 [2025-02-08 06:15:15,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2025-02-08 06:15:15,578 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:15,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 233 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-08 06:15:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2025-02-08 06:15:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2025-02-08 06:15:15,580 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 62 [2025-02-08 06:15:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:15,580 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2025-02-08 06:15:15,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2025-02-08 06:15:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-08 06:15:15,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:15,580 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:15,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:15,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:15,781 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:15,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1266691025, now seen corresponding path program 4 times [2025-02-08 06:15:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944073017] [2025-02-08 06:15:15,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:15,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:15,791 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-02-08 06:15:15,808 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 73 statements. [2025-02-08 06:15:15,808 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:15,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 74 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944073017] [2025-02-08 06:15:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944073017] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048645421] [2025-02-08 06:15:16,689 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:16,690 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:16,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 06:15:16,767 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-02-08 06:15:16,790 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 73 statements. [2025-02-08 06:15:16,790 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:16,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:16,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 82 conjuncts are in the unsatisfiable core [2025-02-08 06:15:16,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:16,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:15:18,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:18,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 119 [2025-02-08 06:15:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 68 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:18,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:20,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:20,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 117 [2025-02-08 06:15:20,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2025-02-08 06:15:20,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:20,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 45 [2025-02-08 06:15:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 68 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:15:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048645421] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:20,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 92 [2025-02-08 06:15:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16216281] [2025-02-08 06:15:20,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:20,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2025-02-08 06:15:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:20,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2025-02-08 06:15:20,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=7480, Unknown=0, NotChecked=0, Total=8372 [2025-02-08 06:15:20,367 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 92 states, 92 states have (on average 1.8043478260869565) internal successors, (166), 92 states have internal predecessors, (166), 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 06:15:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:21,314 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2025-02-08 06:15:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 06:15:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.8043478260869565) internal successors, (166), 92 states have internal predecessors, (166), 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 73 [2025-02-08 06:15:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:21,315 INFO L225 Difference]: With dead ends: 130 [2025-02-08 06:15:21,315 INFO L226 Difference]: Without dead ends: 130 [2025-02-08 06:15:21,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4068 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1190, Invalid=8910, Unknown=0, NotChecked=0, Total=10100 [2025-02-08 06:15:21,317 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:21,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 431 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:15:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-08 06:15:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2025-02-08 06:15:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.089430894308943) internal successors, (134), 123 states have internal predecessors, (134), 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 06:15:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2025-02-08 06:15:21,320 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 73 [2025-02-08 06:15:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:21,320 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2025-02-08 06:15:21,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.8043478260869565) internal successors, (166), 92 states have internal predecessors, (166), 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 06:15:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2025-02-08 06:15:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 06:15:21,321 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:21,321 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:21,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 06:15:21,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:21,521 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 895474549, now seen corresponding path program 5 times [2025-02-08 06:15:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074328395] [2025-02-08 06:15:21,522 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:21,530 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 5 equivalence classes. [2025-02-08 06:15:21,545 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 06:15:21,545 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:15:21,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 57 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074328395] [2025-02-08 06:15:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074328395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395205021] [2025-02-08 06:15:21,771 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:21,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:21,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 06:15:21,837 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 5 equivalence classes. [2025-02-08 06:15:21,874 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 06:15:21,874 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:15:21,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:21,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-08 06:15:21,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:21,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 57 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:21,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:22,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-02-08 06:15:22,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:22,035 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 16 treesize of output 12 [2025-02-08 06:15:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395205021] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:22,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 23 [2025-02-08 06:15:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478189307] [2025-02-08 06:15:22,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:22,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:15:22,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:22,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:15:22,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:15:22,081 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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 06:15:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:22,239 INFO L93 Difference]: Finished difference Result 223 states and 240 transitions. [2025-02-08 06:15:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:15:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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 76 [2025-02-08 06:15:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:22,239 INFO L225 Difference]: With dead ends: 223 [2025-02-08 06:15:22,239 INFO L226 Difference]: Without dead ends: 129 [2025-02-08 06:15:22,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2025-02-08 06:15:22,240 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:22,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 541 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-08 06:15:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2025-02-08 06:15:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2025-02-08 06:15:22,243 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 76 [2025-02-08 06:15:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:22,243 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2025-02-08 06:15:22,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 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 06:15:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2025-02-08 06:15:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 06:15:22,243 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:22,243 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:22,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 06:15:22,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-08 06:15:22,444 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:22,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1045626963, now seen corresponding path program 6 times [2025-02-08 06:15:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904189865] [2025-02-08 06:15:22,444 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:22,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 5 equivalence classes. [2025-02-08 06:15:22,478 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 06:15:22,479 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 06:15:22,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 5 proven. 91 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904189865] [2025-02-08 06:15:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904189865] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321633280] [2025-02-08 06:15:22,749 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:22,751 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 06:15:22,823 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 5 equivalence classes. [2025-02-08 06:15:22,938 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 06:15:22,938 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 06:15:22,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:22,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:15:22,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 84 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:23,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:23,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-02-08 06:15:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 84 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321633280] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:23,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:23,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2025-02-08 06:15:23,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496274928] [2025-02-08 06:15:23,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:23,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 06:15:23,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:23,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 06:15:23,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2025-02-08 06:15:23,271 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 28 states, 27 states have (on average 5.555555555555555) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:23,391 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2025-02-08 06:15:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:15:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.555555555555555) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-02-08 06:15:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:23,391 INFO L225 Difference]: With dead ends: 152 [2025-02-08 06:15:23,392 INFO L226 Difference]: Without dead ends: 152 [2025-02-08 06:15:23,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:15:23,392 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 82 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:23,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 173 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:15:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-02-08 06:15:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 138. [2025-02-08 06:15:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 137 states have internal predecessors, (149), 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 06:15:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2025-02-08 06:15:23,394 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 79 [2025-02-08 06:15:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:23,394 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2025-02-08 06:15:23,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.555555555555555) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:15:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2025-02-08 06:15:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-08 06:15:23,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:23,395 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:23,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:23,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:23,596 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:23,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash 636962760, now seen corresponding path program 7 times [2025-02-08 06:15:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704719494] [2025-02-08 06:15:23,596 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:15:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:23,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:15:23,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:15:23,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:23,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 38 proven. 104 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704719494] [2025-02-08 06:15:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704719494] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659302029] [2025-02-08 06:15:23,925 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:15:23,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:23,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:23,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:23,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 06:15:24,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:15:24,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:15:24,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:24,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:24,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-08 06:15:24,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:24,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 38 proven. 104 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:24,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:24,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-02-08 06:15:24,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:24,378 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 16 treesize of output 12 [2025-02-08 06:15:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 18 proven. 124 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659302029] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:24,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:24,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 20] total 33 [2025-02-08 06:15:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955142013] [2025-02-08 06:15:24,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:24,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 06:15:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:24,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 06:15:24,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 06:15:24,437 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 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 06:15:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:24,695 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2025-02-08 06:15:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 06:15:24,695 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-02-08 06:15:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:24,696 INFO L225 Difference]: With dead ends: 254 [2025-02-08 06:15:24,696 INFO L226 Difference]: Without dead ends: 143 [2025-02-08 06:15:24,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:15:24,696 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 15 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:24,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 930 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:15:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-02-08 06:15:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2025-02-08 06:15:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0857142857142856) internal successors, (152), 140 states have internal predecessors, (152), 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 06:15:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2025-02-08 06:15:24,698 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 90 [2025-02-08 06:15:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:24,698 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2025-02-08 06:15:24,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 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 06:15:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2025-02-08 06:15:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-08 06:15:24,699 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:24,699 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:24,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 06:15:24,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:24,899 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:24,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 712288768, now seen corresponding path program 8 times [2025-02-08 06:15:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:24,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276852866] [2025-02-08 06:15:24,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:24,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-08 06:15:24,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 06:15:24,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:24,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 12 proven. 143 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:25,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276852866] [2025-02-08 06:15:25,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276852866] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795372260] [2025-02-08 06:15:25,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:25,254 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:25,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 06:15:25,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-08 06:15:25,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 06:15:25,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:25,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:25,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-08 06:15:25,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:25,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:25,804 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 21 treesize of output 17 [2025-02-08 06:15:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:15:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795372260] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:25,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2025-02-08 06:15:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732063870] [2025-02-08 06:15:25,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:25,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 06:15:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:25,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 06:15:25,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 06:15:25,954 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 36 states, 35 states have (on average 5.457142857142857) internal successors, (191), 36 states have internal predecessors, (191), 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 06:15:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:26,299 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2025-02-08 06:15:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 06:15:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.457142857142857) internal successors, (191), 36 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-02-08 06:15:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:26,301 INFO L225 Difference]: With dead ends: 166 [2025-02-08 06:15:26,301 INFO L226 Difference]: Without dead ends: 166 [2025-02-08 06:15:26,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=1583, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:15:26,302 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 49 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:26,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 846 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:15:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-08 06:15:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2025-02-08 06:15:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.086092715231788) internal successors, (164), 151 states have internal predecessors, (164), 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 06:15:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 164 transitions. [2025-02-08 06:15:26,304 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 164 transitions. Word has length 93 [2025-02-08 06:15:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:26,304 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 164 transitions. [2025-02-08 06:15:26,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.457142857142857) internal successors, (191), 36 states have internal predecessors, (191), 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 06:15:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 164 transitions. [2025-02-08 06:15:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-08 06:15:26,308 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:26,308 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:26,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 06:15:26,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:26,508 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:26,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1053164651, now seen corresponding path program 9 times [2025-02-08 06:15:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103106767] [2025-02-08 06:15:26,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:26,518 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 7 equivalence classes. [2025-02-08 06:15:26,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 06:15:26,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:15:26,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 152 proven. 47 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:15:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103106767] [2025-02-08 06:15:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103106767] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924368596] [2025-02-08 06:15:26,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:26,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:26,921 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:26,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 06:15:27,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 7 equivalence classes. [2025-02-08 06:15:27,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 06:15:27,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:15:27,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:27,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-02-08 06:15:27,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:27,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:15:27,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-02-08 06:15:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 68 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:15:27,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:27,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-02-08 06:15:27,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:27,980 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 16 treesize of output 12 [2025-02-08 06:15:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 68 proven. 128 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-08 06:15:28,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924368596] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:28,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 20] total 59 [2025-02-08 06:15:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884291817] [2025-02-08 06:15:28,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:28,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-02-08 06:15:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:28,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-02-08 06:15:28,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3237, Unknown=0, NotChecked=0, Total=3422 [2025-02-08 06:15:28,160 INFO L87 Difference]: Start difference. First operand 152 states and 164 transitions. Second operand has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 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 06:15:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:29,873 INFO L93 Difference]: Finished difference Result 469 states and 497 transitions. [2025-02-08 06:15:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-08 06:15:29,874 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 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 104 [2025-02-08 06:15:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:29,874 INFO L225 Difference]: With dead ends: 469 [2025-02-08 06:15:29,874 INFO L226 Difference]: Without dead ends: 111 [2025-02-08 06:15:29,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1868 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=576, Invalid=8166, Unknown=0, NotChecked=0, Total=8742 [2025-02-08 06:15:29,876 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 73 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:29,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2389 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 06:15:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-02-08 06:15:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2025-02-08 06:15:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0833333333333333) internal successors, (117), 108 states have internal predecessors, (117), 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 06:15:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2025-02-08 06:15:29,878 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 104 [2025-02-08 06:15:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:29,878 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2025-02-08 06:15:29,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 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 06:15:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2025-02-08 06:15:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-08 06:15:29,879 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:29,879 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:29,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:30,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-08 06:15:30,080 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:30,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash 578946319, now seen corresponding path program 10 times [2025-02-08 06:15:30,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:30,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682468903] [2025-02-08 06:15:30,080 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:30,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:30,088 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-02-08 06:15:30,139 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 95 of 107 statements. [2025-02-08 06:15:30,140 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:30,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 177 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:15:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682468903] [2025-02-08 06:15:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682468903] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82099372] [2025-02-08 06:15:32,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:32,081 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 06:15:32,162 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-02-08 06:15:32,192 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 95 of 107 statements. [2025-02-08 06:15:32,192 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:15:32,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:32,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 116 conjuncts are in the unsatisfiable core [2025-02-08 06:15:32,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:32,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:15:36,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:36,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 253 [2025-02-08 06:15:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 167 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:15:36,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:40,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:40,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 125 treesize of output 242 [2025-02-08 06:15:40,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2025-02-08 06:15:40,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:15:40,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 67 [2025-02-08 06:15:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 167 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:15:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82099372] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:41,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 140 [2025-02-08 06:15:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514954675] [2025-02-08 06:15:41,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:41,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2025-02-08 06:15:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:41,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2025-02-08 06:15:41,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1967, Invalid=17493, Unknown=0, NotChecked=0, Total=19460 [2025-02-08 06:15:41,300 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 140 states, 140 states have (on average 1.7857142857142858) internal successors, (250), 140 states have internal predecessors, (250), 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 06:15:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:43,533 INFO L93 Difference]: Finished difference Result 188 states and 202 transitions. [2025-02-08 06:15:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-08 06:15:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.7857142857142858) internal successors, (250), 140 states have internal predecessors, (250), 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 107 [2025-02-08 06:15:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:43,534 INFO L225 Difference]: With dead ends: 188 [2025-02-08 06:15:43,534 INFO L226 Difference]: Without dead ends: 188 [2025-02-08 06:15:43,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10107 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2631, Invalid=21549, Unknown=0, NotChecked=0, Total=24180 [2025-02-08 06:15:43,535 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 63 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:43,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 660 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 06:15:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-02-08 06:15:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 180. [2025-02-08 06:15:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 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 06:15:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2025-02-08 06:15:43,539 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 107 [2025-02-08 06:15:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:43,540 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2025-02-08 06:15:43,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 1.7857142857142858) internal successors, (250), 140 states have internal predecessors, (250), 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 06:15:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2025-02-08 06:15:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-08 06:15:43,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:43,540 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:43,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 06:15:43,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:43,741 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:43,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash -527904427, now seen corresponding path program 11 times [2025-02-08 06:15:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68100787] [2025-02-08 06:15:43,742 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:43,752 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 110 statements into 7 equivalence classes. [2025-02-08 06:15:43,767 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 06:15:43,767 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 06:15:43,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 47 proven. 165 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68100787] [2025-02-08 06:15:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68100787] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269878730] [2025-02-08 06:15:44,189 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:44,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:44,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:44,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:44,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 06:15:44,275 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 110 statements into 7 equivalence classes. [2025-02-08 06:15:44,344 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 06:15:44,344 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 06:15:44,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:44,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-08 06:15:44,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:44,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 47 proven. 165 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:44,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:44,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-02-08 06:15:44,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:44,727 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 16 treesize of output 12 [2025-02-08 06:15:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 190 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269878730] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:44,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:44,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 37 [2025-02-08 06:15:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075887437] [2025-02-08 06:15:44,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:44,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 06:15:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:44,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 06:15:44,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1232, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:15:44,832 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 37 states, 37 states have (on average 3.8378378378378377) internal successors, (142), 37 states have internal predecessors, (142), 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 06:15:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:45,173 INFO L93 Difference]: Finished difference Result 329 states and 354 transitions. [2025-02-08 06:15:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 06:15:45,173 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.8378378378378377) internal successors, (142), 37 states have internal predecessors, (142), 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 110 [2025-02-08 06:15:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:45,174 INFO L225 Difference]: With dead ends: 329 [2025-02-08 06:15:45,174 INFO L226 Difference]: Without dead ends: 185 [2025-02-08 06:15:45,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 06:15:45,175 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:45,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1269 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:15:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-02-08 06:15:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2025-02-08 06:15:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.0824175824175823) internal successors, (197), 182 states have internal predecessors, (197), 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 06:15:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2025-02-08 06:15:45,178 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 110 [2025-02-08 06:15:45,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:45,178 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2025-02-08 06:15:45,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.8378378378378377) internal successors, (142), 37 states have internal predecessors, (142), 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 06:15:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2025-02-08 06:15:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 06:15:45,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:45,179 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:45,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:45,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-08 06:15:45,380 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:45,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash 334948237, now seen corresponding path program 12 times [2025-02-08 06:15:45,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:45,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253343299] [2025-02-08 06:15:45,380 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:45,390 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 113 statements into 7 equivalence classes. [2025-02-08 06:15:45,411 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:15:45,412 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 06:15:45,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 22 proven. 206 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253343299] [2025-02-08 06:15:45,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253343299] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766687198] [2025-02-08 06:15:45,926 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:45,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:15:45,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 06:15:46,011 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 113 statements into 7 equivalence classes. [2025-02-08 06:15:46,144 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:15:46,144 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 06:15:46,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:46,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-08 06:15:46,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:15:46,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:46,921 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 15 treesize of output 11 [2025-02-08 06:15:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 35 proven. 193 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766687198] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:47,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:47,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 17] total 53 [2025-02-08 06:15:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497808893] [2025-02-08 06:15:47,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:47,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-08 06:15:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:47,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-08 06:15:47,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2025-02-08 06:15:47,135 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand has 54 states, 53 states have (on average 5.69811320754717) internal successors, (302), 54 states have internal predecessors, (302), 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 06:15:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:47,684 INFO L93 Difference]: Finished difference Result 210 states and 226 transitions. [2025-02-08 06:15:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 06:15:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.69811320754717) internal successors, (302), 54 states have internal predecessors, (302), 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 113 [2025-02-08 06:15:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:47,685 INFO L225 Difference]: With dead ends: 210 [2025-02-08 06:15:47,685 INFO L226 Difference]: Without dead ends: 210 [2025-02-08 06:15:47,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=4441, Unknown=0, NotChecked=0, Total=4970 [2025-02-08 06:15:47,686 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 122 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:47,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 342 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:15:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-02-08 06:15:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 194. [2025-02-08 06:15:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0829015544041452) internal successors, (209), 193 states have internal predecessors, (209), 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 06:15:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2025-02-08 06:15:47,689 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 113 [2025-02-08 06:15:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:47,689 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2025-02-08 06:15:47,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.69811320754717) internal successors, (302), 54 states have internal predecessors, (302), 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 06:15:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2025-02-08 06:15:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-08 06:15:47,689 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:47,689 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:47,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:47,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-08 06:15:47,890 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:47,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:47,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1011371032, now seen corresponding path program 13 times [2025-02-08 06:15:47,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:47,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957953037] [2025-02-08 06:15:47,890 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:15:47,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:47,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-08 06:15:47,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-08 06:15:47,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:47,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 56 proven. 240 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:48,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:48,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957953037] [2025-02-08 06:15:48,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957953037] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:48,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404301552] [2025-02-08 06:15:48,405 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:15:48,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:48,407 INFO L229 MonitoredProcess]: Starting monitored process 23 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 06:15:48,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 06:15:48,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-08 06:15:48,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-08 06:15:48,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:15:48,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:48,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-08 06:15:48,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:48,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:15:48,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-02-08 06:15:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 20 proven. 276 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:49,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:49,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-02-08 06:15:49,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:15:49,218 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 16 treesize of output 12 [2025-02-08 06:15:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 20 proven. 276 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:15:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404301552] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:49,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:49,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 24] total 50 [2025-02-08 06:15:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028002725] [2025-02-08 06:15:49,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:49,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-08 06:15:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:49,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-08 06:15:49,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2329, Unknown=0, NotChecked=0, Total=2450 [2025-02-08 06:15:49,291 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 50 states, 50 states have (on average 4.5) internal successors, (225), 50 states have internal predecessors, (225), 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 06:15:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:53,974 INFO L93 Difference]: Finished difference Result 997 states and 1068 transitions. [2025-02-08 06:15:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-02-08 06:15:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.5) internal successors, (225), 50 states have internal predecessors, (225), 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 124 [2025-02-08 06:15:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:53,976 INFO L225 Difference]: With dead ends: 997 [2025-02-08 06:15:53,976 INFO L226 Difference]: Without dead ends: 521 [2025-02-08 06:15:53,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4736 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=751, Invalid=19555, Unknown=0, NotChecked=0, Total=20306 [2025-02-08 06:15:53,977 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 86 mSDsluCounter, 7855 mSDsCounter, 0 mSdLazyCounter, 11661 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 8060 SdHoareTripleChecker+Invalid, 11673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 11661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:53,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 8060 Invalid, 11673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 11661 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 06:15:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-02-08 06:15:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 499. [2025-02-08 06:15:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.0763052208835342) internal successors, (536), 498 states have internal predecessors, (536), 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 06:15:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 536 transitions. [2025-02-08 06:15:53,982 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 536 transitions. Word has length 124 [2025-02-08 06:15:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:53,983 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 536 transitions. [2025-02-08 06:15:53,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.5) internal successors, (225), 50 states have internal predecessors, (225), 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 06:15:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 536 transitions. [2025-02-08 06:15:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-08 06:15:53,984 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:53,984 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:53,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 06:15:54,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-02-08 06:15:54,184 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:54,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -121820186, now seen corresponding path program 14 times [2025-02-08 06:15:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:54,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492819027] [2025-02-08 06:15:54,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:54,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 130 statements into 2 equivalence classes. [2025-02-08 06:15:54,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-08 06:15:54,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:54,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 35 proven. 280 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:15:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492819027] [2025-02-08 06:15:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492819027] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358878996] [2025-02-08 06:15:54,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:15:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:54,730 INFO L229 MonitoredProcess]: Starting monitored process 24 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 06:15:54,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 06:15:54,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 130 statements into 2 equivalence classes. [2025-02-08 06:15:54,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-08 06:15:54,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:15:54,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:54,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-08 06:15:54,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 51 proven. 264 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:15:55,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:55,517 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 21 treesize of output 17 [2025-02-08 06:15:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 51 proven. 264 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:15:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358878996] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:55,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:55,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 45 [2025-02-08 06:15:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024478163] [2025-02-08 06:15:55,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:55,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-08 06:15:55,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:55,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-08 06:15:55,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 06:15:55,742 INFO L87 Difference]: Start difference. First operand 499 states and 536 transitions. Second operand has 46 states, 45 states have (on average 5.622222222222222) internal successors, (253), 46 states have internal predecessors, (253), 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 06:15:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:56,293 INFO L93 Difference]: Finished difference Result 524 states and 563 transitions. [2025-02-08 06:15:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 06:15:56,293 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 5.622222222222222) internal successors, (253), 46 states have internal predecessors, (253), 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 130 [2025-02-08 06:15:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:56,295 INFO L225 Difference]: With dead ends: 524 [2025-02-08 06:15:56,295 INFO L226 Difference]: Without dead ends: 524 [2025-02-08 06:15:56,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=2610, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 06:15:56,295 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 49 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:56,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1267 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:15:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2025-02-08 06:15:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 510. [2025-02-08 06:15:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.0766208251473477) internal successors, (548), 509 states have internal predecessors, (548), 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 06:15:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 548 transitions. [2025-02-08 06:15:56,300 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 548 transitions. Word has length 130 [2025-02-08 06:15:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:56,300 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 548 transitions. [2025-02-08 06:15:56,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 5.622222222222222) internal successors, (253), 46 states have internal predecessors, (253), 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 06:15:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 548 transitions. [2025-02-08 06:15:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-02-08 06:15:56,301 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:56,302 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:56,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 06:15:56,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:56,502 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:56,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 601976303, now seen corresponding path program 15 times [2025-02-08 06:15:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:56,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032958665] [2025-02-08 06:15:56,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:56,513 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 141 statements into 9 equivalence classes. [2025-02-08 06:15:56,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 141 of 141 statements. [2025-02-08 06:15:56,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 06:15:56,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 65 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032958665] [2025-02-08 06:15:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032958665] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053965523] [2025-02-08 06:15:58,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:15:58,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:58,960 INFO L229 MonitoredProcess]: Starting monitored process 25 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 06:15:58,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 06:15:59,063 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 141 statements into 9 equivalence classes. [2025-02-08 06:15:59,324 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 141 of 141 statements. [2025-02-08 06:15:59,324 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 06:15:59,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:59,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-08 06:15:59,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:16:00,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:16:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 65 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:16:00,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:16:01,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-02-08 06:16:01,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:16:01,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-08 06:16:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 30 proven. 383 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:16:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053965523] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:16:01,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:16:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 28] total 79 [2025-02-08 06:16:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677056154] [2025-02-08 06:16:01,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:16:01,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-08 06:16:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:16:01,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-08 06:16:01,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=5906, Unknown=0, NotChecked=0, Total=6162 [2025-02-08 06:16:01,761 INFO L87 Difference]: Start difference. First operand 510 states and 548 transitions. Second operand has 79 states, 79 states have (on average 3.8987341772151898) internal successors, (308), 79 states have internal predecessors, (308), 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 06:16:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:16:05,991 INFO L93 Difference]: Finished difference Result 995 states and 1070 transitions. [2025-02-08 06:16:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-08 06:16:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.8987341772151898) internal successors, (308), 79 states have internal predecessors, (308), 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 141 [2025-02-08 06:16:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:16:05,993 INFO L225 Difference]: With dead ends: 995 [2025-02-08 06:16:05,993 INFO L226 Difference]: Without dead ends: 515 [2025-02-08 06:16:05,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=586, Invalid=10544, Unknown=0, NotChecked=0, Total=11130 [2025-02-08 06:16:05,994 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 100 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 4314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:16:05,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 3016 Invalid, 4314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 06:16:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2025-02-08 06:16:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 513. [2025-02-08 06:16:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.076171875) internal successors, (551), 512 states have internal predecessors, (551), 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 06:16:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 551 transitions. [2025-02-08 06:16:05,999 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 551 transitions. Word has length 141 [2025-02-08 06:16:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:16:05,999 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 551 transitions. [2025-02-08 06:16:05,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.8987341772151898) internal successors, (308), 79 states have internal predecessors, (308), 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 06:16:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 551 transitions. [2025-02-08 06:16:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-08 06:16:06,000 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:16:06,000 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:16:06,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 06:16:06,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-02-08 06:16:06,201 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:16:06,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:16:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash -222392137, now seen corresponding path program 16 times [2025-02-08 06:16:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:16:06,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185264374] [2025-02-08 06:16:06,201 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:16:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:16:06,213 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 144 statements into 2 equivalence classes. [2025-02-08 06:16:06,309 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 127 of 144 statements. [2025-02-08 06:16:06,310 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:16:06,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:16:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 324 proven. 70 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:16:09,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:16:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185264374] [2025-02-08 06:16:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185264374] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:16:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852046651] [2025-02-08 06:16:09,607 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:16:09,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:16:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:16:09,609 INFO L229 MonitoredProcess]: Starting monitored process 26 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 06:16:09,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 06:16:09,708 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 144 statements into 2 equivalence classes. [2025-02-08 06:16:09,750 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 127 of 144 statements. [2025-02-08 06:16:09,750 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:16:09,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:16:09,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 150 conjuncts are in the unsatisfiable core [2025-02-08 06:16:09,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:16:10,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:16:18,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:16:18,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 163 treesize of output 435 [2025-02-08 06:16:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 310 proven. 84 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:16:18,591 INFO L312 TraceCheckSpWp]: Computing backward predicates...