./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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/uthash-2.0.2/uthash_SAX_test4-2.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 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:28:57,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:28:57,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:28:57,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:28:57,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:28:57,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:28:57,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:28:57,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:28:57,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:28:57,100 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:28:57,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:28:57,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:28:57,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:28:57,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:28:57,101 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:28:57,102 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:28:57,102 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:28:57,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:28:57,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:28:57,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:28:57,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:28:57,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:28:57,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:28:57,104 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 -> 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 [2025-01-10 00:28:57,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:28:57,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:28:57,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:28:57,297 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:28:57,297 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:28:57,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2025-01-10 00:28:58,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e55f7112/dc2fb1a9a7754fd8a337b73e005b23ab/FLAG2226d87b1 [2025-01-10 00:28:58,834 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:28:58,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2025-01-10 00:28:58,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e55f7112/dc2fb1a9a7754fd8a337b73e005b23ab/FLAG2226d87b1 [2025-01-10 00:28:59,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4e55f7112/dc2fb1a9a7754fd8a337b73e005b23ab [2025-01-10 00:28:59,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:28:59,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:28:59,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:28:59,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:28:59,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:28:59,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:59" (1/1) ... [2025-01-10 00:28:59,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcaa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:59, skipping insertion in model container [2025-01-10 00:28:59,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:59" (1/1) ... [2025-01-10 00:28:59,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:28:59,352 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,367 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,370 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,372 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,384 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,407 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,409 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,410 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,413 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,419 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,420 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,421 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,422 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,423 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,423 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,425 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:28:59,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:28:59,441 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-01-10 00:28:59,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f1bcb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:59, skipping insertion in model container [2025-01-10 00:28:59,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:28:59,442 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:28:59,443 INFO L158 Benchmark]: Toolchain (without parser) took 381.82ms. Allocated memory is still 142.6MB. Free memory was 103.5MB in the beginning and 82.7MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:28:59,443 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:28:59,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.30ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 82.7MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:28:59,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.30ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 82.7MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/uthash-2.0.2/uthash_SAX_test4-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:29:01,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:29:01,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:29:01,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:29:01,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:29:01,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:29:01,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:29:01,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:29:01,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:29:01,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:29:01,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:29:01,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:29:01,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:29:01,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:29:01,624 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:29:01,624 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:29:01,624 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:29:01,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:29:01,625 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:29:01,625 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:29:01,625 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:29:01,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:29:01,625 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:29:01,626 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:01,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:29:01,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:01,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:29:01,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:29:01,627 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:29:01,627 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:29:01,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:29:01,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:29:01,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:29:01,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:29:01,628 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 -> 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 [2025-01-10 00:29:01,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:29:01,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:29:01,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:29:01,895 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:29:01,898 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:29:01,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2025-01-10 00:29:03,054 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ec0b35cd/49da20aca5eb4a6d9921fbf132cd72b0/FLAG064062f39 [2025-01-10 00:29:03,364 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:29:03,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2025-01-10 00:29:03,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ec0b35cd/49da20aca5eb4a6d9921fbf132cd72b0/FLAG064062f39 [2025-01-10 00:29:03,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ec0b35cd/49da20aca5eb4a6d9921fbf132cd72b0 [2025-01-10 00:29:03,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:29:03,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:29:03,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:03,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:29:03,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:29:03,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:03" (1/1) ... [2025-01-10 00:29:03,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649c296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:03, skipping insertion in model container [2025-01-10 00:29:03,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:03" (1/1) ... [2025-01-10 00:29:03,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:29:03,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,767 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,771 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,778 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,818 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,822 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,827 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,842 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,842 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,845 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,846 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,849 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:03,862 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:29:03,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:29:03,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,916 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,920 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,940 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,941 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,944 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,946 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,954 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,958 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,959 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,960 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,961 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,961 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,963 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:29:03,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:03,977 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:29:04,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:29:04,107 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:29:04,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04 WrapperNode [2025-01-10 00:29:04,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:29:04,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:29:04,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:29:04,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:29:04,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,179 INFO L138 Inliner]: procedures = 179, calls = 387, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1298 [2025-01-10 00:29:04,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:29:04,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:29:04,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:29:04,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:29:04,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,300 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2025-01-10 00:29:04,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:29:04,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:29:04,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:29:04,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:29:04,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (1/1) ... [2025-01-10 00:29:04,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:29:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:04,403 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) [2025-01-10 00:29:04,407 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 [2025-01-10 00:29:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:29:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:29:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:29:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:29:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 00:29:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 00:29:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:29:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:29:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:29:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:29:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:29:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:29:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:29:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:29:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:29:04,623 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:29:04,624 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:29:04,626 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:29:04,655 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:29:07,780 INFO L? ?]: Removed 1544 outVars from TransFormulas that were not future-live. [2025-01-10 00:29:07,784 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:29:07,823 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:29:07,826 INFO L312 CfgBuilder]: Removed 32 assume(true) statements. [2025-01-10 00:29:07,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:07 BoogieIcfgContainer [2025-01-10 00:29:07,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:29:07,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:29:07,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:29:07,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:29:07,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:29:03" (1/3) ... [2025-01-10 00:29:07,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e0cd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:07, skipping insertion in model container [2025-01-10 00:29:07,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:04" (2/3) ... [2025-01-10 00:29:07,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e0cd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:07, skipping insertion in model container [2025-01-10 00:29:07,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:07" (3/3) ... [2025-01-10 00:29:07,835 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-2.i [2025-01-10 00:29:07,846 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:29:07,848 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test4-2.i that has 4 procedures, 1448 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2025-01-10 00:29:07,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:29:07,898 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;@1bcd99fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:29:07,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-01-10 00:29:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 1443 states, 697 states have (on average 2.2453371592539453) internal successors, (1565), 1434 states have internal predecessors, (1565), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-10 00:29:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:29:07,907 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:07,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:29:07,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:07,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash 47600131, now seen corresponding path program 1 times [2025-01-10 00:29:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889583993] [2025-01-10 00:29:07,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:07,920 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) [2025-01-10 00:29:07,922 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 [2025-01-10 00:29:08,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:29:08,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:29:08,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:08,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:08,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:29:08,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:08,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:08,095 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889583993] [2025-01-10 00:29:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889583993] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156109520] [2025-01-10 00:29:08,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:08,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:08,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:08,117 INFO L87 Difference]: Start difference. First operand has 1443 states, 697 states have (on average 2.2453371592539453) internal successors, (1565), 1434 states have internal predecessors, (1565), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:08,906 INFO L93 Difference]: Finished difference Result 2142 states and 2264 transitions. [2025-01-10 00:29:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-01-10 00:29:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:08,922 INFO L225 Difference]: With dead ends: 2142 [2025-01-10 00:29:08,922 INFO L226 Difference]: Without dead ends: 2140 [2025-01-10 00:29:08,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:08,925 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 748 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:08,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4162 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 00:29:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2025-01-10 00:29:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1781. [2025-01-10 00:29:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1046 states have (on average 2.1261950286806885) internal successors, (2224), 1769 states have internal predecessors, (2224), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2262 transitions. [2025-01-10 00:29:08,989 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2262 transitions. Word has length 5 [2025-01-10 00:29:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:08,989 INFO L471 AbstractCegarLoop]: Abstraction has 1781 states and 2262 transitions. [2025-01-10 00:29:08,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2262 transitions. [2025-01-10 00:29:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:29:08,990 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:08,990 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:29:08,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:09,191 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 [2025-01-10 00:29:09,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:09,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 45872344, now seen corresponding path program 1 times [2025-01-10 00:29:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411752759] [2025-01-10 00:29:09,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:09,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:09,194 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) [2025-01-10 00:29:09,219 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 [2025-01-10 00:29:09,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:29:09,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:29:09,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:09,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:09,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:29:09,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:09,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:29:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:09,351 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:09,351 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411752759] [2025-01-10 00:29:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411752759] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:29:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969411348] [2025-01-10 00:29:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:09,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:09,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:09,353 INFO L87 Difference]: Start difference. First operand 1781 states and 2262 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:10,871 INFO L93 Difference]: Finished difference Result 1687 states and 2118 transitions. [2025-01-10 00:29:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:10,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-01-10 00:29:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:10,876 INFO L225 Difference]: With dead ends: 1687 [2025-01-10 00:29:10,876 INFO L226 Difference]: Without dead ends: 1687 [2025-01-10 00:29:10,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:10,876 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 1037 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:10,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 912 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:29:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2025-01-10 00:29:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1687. [2025-01-10 00:29:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1046 states have (on average 1.988527724665392) internal successors, (2080), 1675 states have internal predecessors, (2080), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2118 transitions. [2025-01-10 00:29:10,898 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2118 transitions. Word has length 5 [2025-01-10 00:29:10,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:10,898 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2118 transitions. [2025-01-10 00:29:10,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2118 transitions. [2025-01-10 00:29:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:29:10,898 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:10,898 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:29:10,904 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 [2025-01-10 00:29:11,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:11,099 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:11,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash 45872345, now seen corresponding path program 1 times [2025-01-10 00:29:11,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:11,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454310637] [2025-01-10 00:29:11,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:11,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:11,102 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) [2025-01-10 00:29:11,103 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 [2025-01-10 00:29:11,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:29:11,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:29:11,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:11,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:11,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:29:11,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:11,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:11,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:11,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:11,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454310637] [2025-01-10 00:29:11,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454310637] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:11,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:11,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:29:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772960282] [2025-01-10 00:29:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:11,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:11,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:11,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:11,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:11,220 INFO L87 Difference]: Start difference. First operand 1687 states and 2118 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:13,236 INFO L93 Difference]: Finished difference Result 2126 states and 2664 transitions. [2025-01-10 00:29:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-01-10 00:29:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:13,242 INFO L225 Difference]: With dead ends: 2126 [2025-01-10 00:29:13,242 INFO L226 Difference]: Without dead ends: 2126 [2025-01-10 00:29:13,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:13,243 INFO L435 NwaCegarLoop]: 1251 mSDtfsCounter, 519 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:13,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1832 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-10 00:29:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2025-01-10 00:29:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1972. [2025-01-10 00:29:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1341 states have (on average 1.9410887397464578) internal successors, (2603), 1960 states have internal predecessors, (2603), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2641 transitions. [2025-01-10 00:29:13,270 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2641 transitions. Word has length 5 [2025-01-10 00:29:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:13,270 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2641 transitions. [2025-01-10 00:29:13,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2641 transitions. [2025-01-10 00:29:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-10 00:29:13,270 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:13,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:29:13,277 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 [2025-01-10 00:29:13,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:13,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:13,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1475682326, now seen corresponding path program 1 times [2025-01-10 00:29:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635243090] [2025-01-10 00:29:13,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:13,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:13,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:13,480 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) [2025-01-10 00:29:13,482 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 [2025-01-10 00:29:13,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:29:13,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:29:13,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:13,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:13,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:29:13,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:13,645 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:13,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:13,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635243090] [2025-01-10 00:29:13,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635243090] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:13,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:13,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122536240] [2025-01-10 00:29:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:13,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:13,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:13,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:13,646 INFO L87 Difference]: Start difference. First operand 1972 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2025-01-10 00:29:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:13,908 INFO L93 Difference]: Finished difference Result 2051 states and 2587 transitions. [2025-01-10 00:29:13,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:13,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2025-01-10 00:29:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:13,918 INFO L225 Difference]: With dead ends: 2051 [2025-01-10 00:29:13,921 INFO L226 Difference]: Without dead ends: 2051 [2025-01-10 00:29:13,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:13,922 INFO L435 NwaCegarLoop]: 1470 mSDtfsCounter, 313 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:13,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 2805 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 00:29:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2025-01-10 00:29:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1836. [2025-01-10 00:29:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1205 states have (on average 1.9510373443983402) internal successors, (2351), 1824 states have internal predecessors, (2351), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2389 transitions. [2025-01-10 00:29:13,953 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2389 transitions. Word has length 6 [2025-01-10 00:29:13,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:13,953 INFO L471 AbstractCegarLoop]: Abstraction has 1836 states and 2389 transitions. [2025-01-10 00:29:13,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2025-01-10 00:29:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2389 transitions. [2025-01-10 00:29:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 00:29:13,954 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:13,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:29:14,158 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 [2025-01-10 00:29:14,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr731ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:14,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 791760600, now seen corresponding path program 1 times [2025-01-10 00:29:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951539653] [2025-01-10 00:29:14,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:14,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:14,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:14,162 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) [2025-01-10 00:29:14,163 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 [2025-01-10 00:29:14,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:29:14,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:29:14,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:14,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:14,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:29:14,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:14,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:14,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951539653] [2025-01-10 00:29:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951539653] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:14,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:14,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:29:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232460846] [2025-01-10 00:29:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:14,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:29:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:14,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:29:14,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:14,268 INFO L87 Difference]: Start difference. First operand 1836 states and 2389 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2025-01-10 00:29:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:15,438 INFO L93 Difference]: Finished difference Result 2016 states and 2577 transitions. [2025-01-10 00:29:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:29:15,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2025-01-10 00:29:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:15,449 INFO L225 Difference]: With dead ends: 2016 [2025-01-10 00:29:15,449 INFO L226 Difference]: Without dead ends: 2015 [2025-01-10 00:29:15,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:29:15,453 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 184 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:15,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2088 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:29:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2025-01-10 00:29:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1838. [2025-01-10 00:29:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1207 states have (on average 1.9494614747307373) internal successors, (2353), 1826 states have internal predecessors, (2353), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2391 transitions. [2025-01-10 00:29:15,478 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2391 transitions. Word has length 8 [2025-01-10 00:29:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:15,479 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2391 transitions. [2025-01-10 00:29:15,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2025-01-10 00:29:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2391 transitions. [2025-01-10 00:29:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-10 00:29:15,479 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:15,479 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:15,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:29:15,680 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 [2025-01-10 00:29:15,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr628REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:15,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1225501008, now seen corresponding path program 1 times [2025-01-10 00:29:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497120908] [2025-01-10 00:29:15,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:15,684 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) [2025-01-10 00:29:15,685 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 [2025-01-10 00:29:15,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:29:15,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:29:15,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:15,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:15,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:29:15,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:15,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:15,820 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:15,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497120908] [2025-01-10 00:29:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497120908] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768386708] [2025-01-10 00:29:15,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:15,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:15,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:15,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:15,822 INFO L87 Difference]: Start difference. First operand 1838 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:16,378 INFO L93 Difference]: Finished difference Result 2053 states and 2588 transitions. [2025-01-10 00:29:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-10 00:29:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:16,383 INFO L225 Difference]: With dead ends: 2053 [2025-01-10 00:29:16,383 INFO L226 Difference]: Without dead ends: 2049 [2025-01-10 00:29:16,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:16,384 INFO L435 NwaCegarLoop]: 1470 mSDtfsCounter, 315 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:16,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 4058 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:29:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2025-01-10 00:29:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1834. [2025-01-10 00:29:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1203 states have (on average 1.9517871986699917) internal successors, (2348), 1822 states have internal predecessors, (2348), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2386 transitions. [2025-01-10 00:29:16,409 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2386 transitions. Word has length 9 [2025-01-10 00:29:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:16,409 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 2386 transitions. [2025-01-10 00:29:16,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2386 transitions. [2025-01-10 00:29:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 00:29:16,411 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:16,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:16,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:29:16,612 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 [2025-01-10 00:29:16,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:16,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -459415550, now seen corresponding path program 1 times [2025-01-10 00:29:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179891821] [2025-01-10 00:29:16,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:16,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:16,616 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) [2025-01-10 00:29:16,620 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 [2025-01-10 00:29:16,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:29:16,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:29:16,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:16,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:16,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:29:16,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:16,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:29:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:16,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:16,774 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179891821] [2025-01-10 00:29:16,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179891821] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:16,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:16,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692770556] [2025-01-10 00:29:16,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:16,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:16,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:16,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:16,776 INFO L87 Difference]: Start difference. First operand 1834 states and 2386 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) [2025-01-10 00:29:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:18,788 INFO L93 Difference]: Finished difference Result 1819 states and 2348 transitions. [2025-01-10 00:29:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:18,789 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 [2025-01-10 00:29:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:18,793 INFO L225 Difference]: With dead ends: 1819 [2025-01-10 00:29:18,793 INFO L226 Difference]: Without dead ends: 1819 [2025-01-10 00:29:18,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:18,794 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1087 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:18,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1466 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-10 00:29:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2025-01-10 00:29:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1811. [2025-01-10 00:29:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1203 states have (on average 1.913549459684123) internal successors, (2302), 1799 states have internal predecessors, (2302), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2340 transitions. [2025-01-10 00:29:18,844 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2340 transitions. Word has length 11 [2025-01-10 00:29:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:18,844 INFO L471 AbstractCegarLoop]: Abstraction has 1811 states and 2340 transitions. [2025-01-10 00:29:18,844 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) [2025-01-10 00:29:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2340 transitions. [2025-01-10 00:29:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 00:29:18,844 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:18,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:18,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:19,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:19,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:19,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -459415549, now seen corresponding path program 1 times [2025-01-10 00:29:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177566989] [2025-01-10 00:29:19,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:19,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:19,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:19,050 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) [2025-01-10 00:29:19,051 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 [2025-01-10 00:29:19,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:29:19,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:29:19,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:19,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:19,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:29:19,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:19,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:19,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:19,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177566989] [2025-01-10 00:29:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177566989] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:29:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758195147] [2025-01-10 00:29:19,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:19,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:19,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:19,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:19,217 INFO L87 Difference]: Start difference. First operand 1811 states and 2340 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) [2025-01-10 00:29:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:22,081 INFO L93 Difference]: Finished difference Result 2093 states and 2513 transitions. [2025-01-10 00:29:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:22,084 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 [2025-01-10 00:29:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:22,089 INFO L225 Difference]: With dead ends: 2093 [2025-01-10 00:29:22,089 INFO L226 Difference]: Without dead ends: 2093 [2025-01-10 00:29:22,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:22,089 INFO L435 NwaCegarLoop]: 1448 mSDtfsCounter, 642 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:22,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 2876 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-01-10 00:29:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2025-01-10 00:29:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1925. [2025-01-10 00:29:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1317 states have (on average 1.8526955201214883) internal successors, (2440), 1913 states have internal predecessors, (2440), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2478 transitions. [2025-01-10 00:29:22,118 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2478 transitions. Word has length 11 [2025-01-10 00:29:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:22,118 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 2478 transitions. [2025-01-10 00:29:22,118 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) [2025-01-10 00:29:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2478 transitions. [2025-01-10 00:29:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 00:29:22,119 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:22,119 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, 1, 1, 1, 1, 1] [2025-01-10 00:29:22,127 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 [2025-01-10 00:29:22,319 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 [2025-01-10 00:29:22,320 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:22,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash -331136590, now seen corresponding path program 1 times [2025-01-10 00:29:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817810694] [2025-01-10 00:29:22,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:22,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:22,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:22,323 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) [2025-01-10 00:29:22,324 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 [2025-01-10 00:29:22,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 00:29:22,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 00:29:22,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:22,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:22,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:29:22,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:22,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:22,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:29:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:22,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817810694] [2025-01-10 00:29:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817810694] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:29:22,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:29:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-01-10 00:29:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025101219] [2025-01-10 00:29:22,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:29:22,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:29:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:22,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:29:22,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:29:22,992 INFO L87 Difference]: Start difference. First operand 1925 states and 2478 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:31,350 INFO L93 Difference]: Finished difference Result 2480 states and 3043 transitions. [2025-01-10 00:29:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:29:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2025-01-10 00:29:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:31,356 INFO L225 Difference]: With dead ends: 2480 [2025-01-10 00:29:31,356 INFO L226 Difference]: Without dead ends: 2480 [2025-01-10 00:29:31,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:29:31,356 INFO L435 NwaCegarLoop]: 1489 mSDtfsCounter, 1303 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 4255 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:31,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 5268 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4255 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2025-01-10 00:29:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2025-01-10 00:29:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2089. [2025-01-10 00:29:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1481 states have (on average 1.8041863605671844) internal successors, (2672), 2077 states have internal predecessors, (2672), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2710 transitions. [2025-01-10 00:29:31,392 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2710 transitions. Word has length 30 [2025-01-10 00:29:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:31,392 INFO L471 AbstractCegarLoop]: Abstraction has 2089 states and 2710 transitions. [2025-01-10 00:29:31,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2710 transitions. [2025-01-10 00:29:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-10 00:29:31,393 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:31,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:31,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:29:31,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:31,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:31,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 622213187, now seen corresponding path program 1 times [2025-01-10 00:29:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299765880] [2025-01-10 00:29:31,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:31,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:31,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:31,603 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) [2025-01-10 00:29:31,604 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 [2025-01-10 00:29:31,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 00:29:31,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 00:29:31,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:31,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:31,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:29:31,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:31,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:31,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299765880] [2025-01-10 00:29:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299765880] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:31,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:31,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609852544] [2025-01-10 00:29:31,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:31,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:31,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:31,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:31,813 INFO L87 Difference]: Start difference. First operand 2089 states and 2710 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:31,888 INFO L93 Difference]: Finished difference Result 1778 states and 2274 transitions. [2025-01-10 00:29:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:29:31,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2025-01-10 00:29:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:31,892 INFO L225 Difference]: With dead ends: 1778 [2025-01-10 00:29:31,892 INFO L226 Difference]: Without dead ends: 1778 [2025-01-10 00:29:31,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:31,893 INFO L435 NwaCegarLoop]: 1317 mSDtfsCounter, 56 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:31,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3878 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:29:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2025-01-10 00:29:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1776. [2025-01-10 00:29:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1191 states have (on average 1.8757346767422334) internal successors, (2234), 1764 states have internal predecessors, (2234), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2272 transitions. [2025-01-10 00:29:31,909 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2272 transitions. Word has length 45 [2025-01-10 00:29:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:31,909 INFO L471 AbstractCegarLoop]: Abstraction has 1776 states and 2272 transitions. [2025-01-10 00:29:31,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2272 transitions. [2025-01-10 00:29:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-01-10 00:29:31,911 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:31,911 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:31,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 00:29:32,114 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 [2025-01-10 00:29:32,116 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:32,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash 804222071, now seen corresponding path program 1 times [2025-01-10 00:29:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:32,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264669606] [2025-01-10 00:29:32,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:32,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:32,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:32,119 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) [2025-01-10 00:29:32,120 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 [2025-01-10 00:29:32,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-01-10 00:29:32,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-01-10 00:29:32,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:32,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:32,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:29:32,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:32,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:32,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:29:32,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-10 00:29:32,644 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:29:32,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:29:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:32,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:32,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:32,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264669606] [2025-01-10 00:29:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264669606] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:32,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951722581] [2025-01-10 00:29:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:32,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:29:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:32,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:29:32,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:32,652 INFO L87 Difference]: Start difference. First operand 1776 states and 2272 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 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) [2025-01-10 00:29:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:34,748 INFO L93 Difference]: Finished difference Result 1692 states and 2147 transitions. [2025-01-10 00:29:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:29:34,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 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) Word has length 53 [2025-01-10 00:29:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:34,753 INFO L225 Difference]: With dead ends: 1692 [2025-01-10 00:29:34,754 INFO L226 Difference]: Without dead ends: 1692 [2025-01-10 00:29:34,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:29:34,756 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 1853 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:34,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 982 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-01-10 00:29:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2025-01-10 00:29:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1516. [2025-01-10 00:29:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1015 states have (on average 1.7536945812807883) internal successors, (1780), 1504 states have internal predecessors, (1780), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1818 transitions. [2025-01-10 00:29:34,776 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1818 transitions. Word has length 53 [2025-01-10 00:29:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:34,776 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 1818 transitions. [2025-01-10 00:29:34,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 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) [2025-01-10 00:29:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1818 transitions. [2025-01-10 00:29:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-10 00:29:34,776 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:34,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:34,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 00:29:34,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:34,977 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:34,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 932432277, now seen corresponding path program 1 times [2025-01-10 00:29:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159086109] [2025-01-10 00:29:34,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:34,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:34,983 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) [2025-01-10 00:29:34,983 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 [2025-01-10 00:29:35,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-10 00:29:35,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-10 00:29:35,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:35,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:35,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:29:35,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:35,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:29:35,170 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 [2025-01-10 00:29:35,184 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 23 treesize of output 11 [2025-01-10 00:29:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:35,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:35,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159086109] [2025-01-10 00:29:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159086109] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385020742] [2025-01-10 00:29:35,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:35,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:29:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:35,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:29:35,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:35,192 INFO L87 Difference]: Start difference. First operand 1516 states and 1818 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:37,036 INFO L93 Difference]: Finished difference Result 1515 states and 1816 transitions. [2025-01-10 00:29:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:29:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-01-10 00:29:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:37,040 INFO L225 Difference]: With dead ends: 1515 [2025-01-10 00:29:37,040 INFO L226 Difference]: Without dead ends: 1515 [2025-01-10 00:29:37,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:29:37,040 INFO L435 NwaCegarLoop]: 1243 mSDtfsCounter, 2 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:37,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3178 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:29:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2025-01-10 00:29:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2025-01-10 00:29:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1015 states have (on average 1.7517241379310344) internal successors, (1778), 1503 states have internal predecessors, (1778), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1816 transitions. [2025-01-10 00:29:37,056 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1816 transitions. Word has length 58 [2025-01-10 00:29:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:37,056 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1816 transitions. [2025-01-10 00:29:37,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1816 transitions. [2025-01-10 00:29:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-10 00:29:37,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:37,057 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:37,067 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 [2025-01-10 00:29:37,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:37,258 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 932432278, now seen corresponding path program 1 times [2025-01-10 00:29:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043752450] [2025-01-10 00:29:37,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:37,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:37,265 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) [2025-01-10 00:29:37,266 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 [2025-01-10 00:29:37,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-10 00:29:37,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-10 00:29:37,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:37,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:37,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:29:37,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:37,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:29:37,496 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 [2025-01-10 00:29:37,508 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 [2025-01-10 00:29:37,552 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 21 treesize of output 9 [2025-01-10 00:29:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:37,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:37,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:37,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043752450] [2025-01-10 00:29:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043752450] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:37,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:37,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687170599] [2025-01-10 00:29:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:37,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:29:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:37,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:29:37,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:29:37,571 INFO L87 Difference]: Start difference. First operand 1515 states and 1816 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:40,208 INFO L93 Difference]: Finished difference Result 1514 states and 1814 transitions. [2025-01-10 00:29:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:29:40,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-01-10 00:29:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:40,212 INFO L225 Difference]: With dead ends: 1514 [2025-01-10 00:29:40,212 INFO L226 Difference]: Without dead ends: 1514 [2025-01-10 00:29:40,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:29:40,213 INFO L435 NwaCegarLoop]: 1243 mSDtfsCounter, 1 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:40,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3209 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-10 00:29:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2025-01-10 00:29:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2025-01-10 00:29:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1013 states have (on average 1.753208292201382) internal successors, (1776), 1502 states have internal predecessors, (1776), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-10 00:29:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1814 transitions. [2025-01-10 00:29:40,266 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1814 transitions. Word has length 58 [2025-01-10 00:29:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:40,267 INFO L471 AbstractCegarLoop]: Abstraction has 1514 states and 1814 transitions. [2025-01-10 00:29:40,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:29:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1814 transitions. [2025-01-10 00:29:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-10 00:29:40,267 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:40,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:40,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:29:40,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:40,469 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:40,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1435272260, now seen corresponding path program 1 times [2025-01-10 00:29:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603856547] [2025-01-10 00:29:40,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:40,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:40,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:40,472 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) [2025-01-10 00:29:40,473 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 [2025-01-10 00:29:40,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 00:29:40,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 00:29:40,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:40,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:40,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:29:40,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:40,687 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 [2025-01-10 00:29:40,754 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 23 treesize of output 11 [2025-01-10 00:29:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:40,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:40,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603856547] [2025-01-10 00:29:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603856547] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:40,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:29:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364557312] [2025-01-10 00:29:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:40,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:29:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:40,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:29:40,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:29:40,787 INFO L87 Difference]: Start difference. First operand 1514 states and 1814 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:29:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:43,189 INFO L93 Difference]: Finished difference Result 1532 states and 1844 transitions. [2025-01-10 00:29:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:29:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2025-01-10 00:29:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:43,196 INFO L225 Difference]: With dead ends: 1532 [2025-01-10 00:29:43,196 INFO L226 Difference]: Without dead ends: 1532 [2025-01-10 00:29:43,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:29:43,197 INFO L435 NwaCegarLoop]: 1226 mSDtfsCounter, 12 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:43,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4391 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-10 00:29:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2025-01-10 00:29:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1523. [2025-01-10 00:29:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1021 states have (on average 1.7502448579823702) internal successors, (1787), 1509 states have internal predecessors, (1787), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2025-01-10 00:29:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1834 transitions. [2025-01-10 00:29:43,232 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1834 transitions. Word has length 66 [2025-01-10 00:29:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:43,232 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1834 transitions. [2025-01-10 00:29:43,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:29:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1834 transitions. [2025-01-10 00:29:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-10 00:29:43,234 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:43,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:43,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:43,434 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 [2025-01-10 00:29:43,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:43,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1435272259, now seen corresponding path program 1 times [2025-01-10 00:29:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061818985] [2025-01-10 00:29:43,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:43,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:43,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:43,439 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) [2025-01-10 00:29:43,440 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 [2025-01-10 00:29:43,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 00:29:43,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 00:29:43,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:43,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:43,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:29:43,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:43,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:29:43,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061818985] [2025-01-10 00:29:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061818985] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:29:43,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:29:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:29:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942568100] [2025-01-10 00:29:43,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:29:43,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:29:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:43,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:29:43,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:43,695 INFO L87 Difference]: Start difference. First operand 1523 states and 1834 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:29:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:43,740 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2025-01-10 00:29:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:29:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2025-01-10 00:29:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:43,745 INFO L225 Difference]: With dead ends: 1517 [2025-01-10 00:29:43,745 INFO L226 Difference]: Without dead ends: 1517 [2025-01-10 00:29:43,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:29:43,746 INFO L435 NwaCegarLoop]: 1242 mSDtfsCounter, 0 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:43,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3718 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:29:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2025-01-10 00:29:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1517. [2025-01-10 00:29:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1015 states have (on average 1.7527093596059113) internal successors, (1779), 1505 states have internal predecessors, (1779), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-01-10 00:29:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 1820 transitions. [2025-01-10 00:29:43,763 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 1820 transitions. Word has length 66 [2025-01-10 00:29:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:43,764 INFO L471 AbstractCegarLoop]: Abstraction has 1517 states and 1820 transitions. [2025-01-10 00:29:43,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 00:29:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 1820 transitions. [2025-01-10 00:29:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 00:29:43,764 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:43,764 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:43,776 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 [2025-01-10 00:29:43,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:43,965 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:43,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -987183799, now seen corresponding path program 1 times [2025-01-10 00:29:43,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:43,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563189860] [2025-01-10 00:29:43,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:29:43,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:43,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:43,973 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) [2025-01-10 00:29:43,974 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 [2025-01-10 00:29:44,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 00:29:44,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 00:29:44,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:29:44,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:44,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:29:44,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:44,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:29:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:44,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563189860] [2025-01-10 00:29:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563189860] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:29:44,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:29:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-10 00:29:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288849798] [2025-01-10 00:29:44,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:29:44,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:29:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:44,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:29:44,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:29:44,271 INFO L87 Difference]: Start difference. First operand 1517 states and 1820 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:29:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:29:44,410 INFO L93 Difference]: Finished difference Result 1529 states and 1839 transitions. [2025-01-10 00:29:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:29:44,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2025-01-10 00:29:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:29:44,414 INFO L225 Difference]: With dead ends: 1529 [2025-01-10 00:29:44,414 INFO L226 Difference]: Without dead ends: 1529 [2025-01-10 00:29:44,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:29:44,414 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 5 mSDsluCounter, 6175 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7416 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:29:44,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7416 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:29:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2025-01-10 00:29:44,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2025-01-10 00:29:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1024 states have (on average 1.751953125) internal successors, (1794), 1514 states have internal predecessors, (1794), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-01-10 00:29:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1835 transitions. [2025-01-10 00:29:44,427 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1835 transitions. Word has length 67 [2025-01-10 00:29:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:29:44,427 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 1835 transitions. [2025-01-10 00:29:44,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:29:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1835 transitions. [2025-01-10 00:29:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-10 00:29:44,428 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:29:44,428 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:29:44,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 00:29:44,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:44,632 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:29:44,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:29:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1379923708, now seen corresponding path program 2 times [2025-01-10 00:29:44,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:29:44,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640020045] [2025-01-10 00:29:44,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:29:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:29:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:29:44,635 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) [2025-01-10 00:29:44,636 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 [2025-01-10 00:29:44,763 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-10 00:29:56,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:29:56,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:29:56,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:56,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 00:29:56,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:56,711 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:29:56,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-10 00:29:56,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-01-10 00:29:56,867 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:29:56,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-01-10 00:29:56,910 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 33 treesize of output 15 [2025-01-10 00:29:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 00:29:56,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:29:56,988 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-01-10 00:29:56,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-01-10 00:29:57,041 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:29:57,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640020045] [2025-01-10 00:29:57,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640020045] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:29:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344954973] [2025-01-10 00:29:57,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:29:57,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:29:57,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:29:57,066 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-10 00:29:57,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-01-10 00:29:57,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-01-10 00:29:57,858 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-10 00:29:57,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:29:57,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:29:57,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:29:57,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:29:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:58,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:29:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:29:58,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [344954973] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:29:58,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:29:58,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-01-10 00:29:58,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714480189] [2025-01-10 00:29:58,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:29:58,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 00:29:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:29:58,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 00:29:58,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2025-01-10 00:29:58,297 INFO L87 Difference]: Start difference. First operand 1527 states and 1835 transitions. Second operand has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:30:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:07,196 INFO L93 Difference]: Finished difference Result 1543 states and 1861 transitions. [2025-01-10 00:30:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 00:30:07,196 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2025-01-10 00:30:07,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:07,199 INFO L225 Difference]: With dead ends: 1543 [2025-01-10 00:30:07,199 INFO L226 Difference]: Without dead ends: 1539 [2025-01-10 00:30:07,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2025-01-10 00:30:07,202 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 997 mSDsluCounter, 9702 mSDsCounter, 0 mSdLazyCounter, 8692 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 10448 SdHoareTripleChecker+Invalid, 8748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 8692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:07,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 10448 Invalid, 8748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 8692 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2025-01-10 00:30:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2025-01-10 00:30:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1535. [2025-01-10 00:30:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1033 states have (on average 1.7463697967086156) internal successors, (1804), 1522 states have internal predecessors, (1804), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-01-10 00:30:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 1845 transitions. [2025-01-10 00:30:07,218 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 1845 transitions. Word has length 70 [2025-01-10 00:30:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:07,218 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 1845 transitions. [2025-01-10 00:30:07,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 00:30:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 1845 transitions. [2025-01-10 00:30:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-10 00:30:07,219 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:07,219 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:07,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-01-10 00:30:07,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:07,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:07,625 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:30:07,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1586127837, now seen corresponding path program 1 times [2025-01-10 00:30:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393950813] [2025-01-10 00:30:07,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:30:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:07,629 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) [2025-01-10 00:30:07,630 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 [2025-01-10 00:30:07,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-10 00:30:07,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 00:30:07,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:30:07,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:30:07,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 00:30:07,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:30:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:08,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:30:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:30:08,441 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:30:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393950813] [2025-01-10 00:30:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393950813] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:30:08,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:30:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-01-10 00:30:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004137946] [2025-01-10 00:30:08,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:30:08,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 00:30:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:30:08,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 00:30:08,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-01-10 00:30:08,442 INFO L87 Difference]: Start difference. First operand 1535 states and 1845 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:30:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:30:09,769 INFO L93 Difference]: Finished difference Result 1559 states and 1884 transitions. [2025-01-10 00:30:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 00:30:09,770 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-01-10 00:30:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:30:09,772 INFO L225 Difference]: With dead ends: 1559 [2025-01-10 00:30:09,772 INFO L226 Difference]: Without dead ends: 1553 [2025-01-10 00:30:09,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-01-10 00:30:09,773 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 15 mSDsluCounter, 14839 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16080 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:30:09,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16080 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 00:30:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2025-01-10 00:30:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1553. [2025-01-10 00:30:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1051 states have (on average 1.7383444338725025) internal successors, (1827), 1540 states have internal predecessors, (1827), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-01-10 00:30:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 1868 transitions. [2025-01-10 00:30:09,784 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 1868 transitions. Word has length 76 [2025-01-10 00:30:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:30:09,784 INFO L471 AbstractCegarLoop]: Abstraction has 1553 states and 1868 transitions. [2025-01-10 00:30:09,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:30:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 1868 transitions. [2025-01-10 00:30:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-10 00:30:09,785 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:30:09,785 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:30:09,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 00:30:09,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:09,986 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-01-10 00:30:09,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:30:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash -596261475, now seen corresponding path program 2 times [2025-01-10 00:30:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:30:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406478332] [2025-01-10 00:30:09,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:30:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:30:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:30:09,990 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) [2025-01-10 00:30:09,991 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 [2025-01-10 00:30:10,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes.