./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:08:11,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:08:11,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:08:11,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:08:11,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:08:11,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:08:11,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:08:11,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:08:11,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:08:11,734 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:08:11,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:08:11,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:08:11,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:08:11,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:08:11,735 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:08:11,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:08:11,735 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:08:11,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:08:11,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:08:11,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:08:11,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:08:11,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:08:11,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:08:11,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:08:11,737 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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2025-02-06 12:08:11,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:08:11,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:08:11,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:08:12,001 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:08:12,001 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:08:12,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-06 12:08:13,139 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9d35c19b/ed32655e02a549039b505d609e042879/FLAG3581dfc6f [2025-02-06 12:08:13,546 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:08:13,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-06 12:08:13,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9d35c19b/ed32655e02a549039b505d609e042879/FLAG3581dfc6f [2025-02-06 12:08:13,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9d35c19b/ed32655e02a549039b505d609e042879 [2025-02-06 12:08:13,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:08:13,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:08:13,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:13,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:08:13,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:08:13,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:13" (1/1) ... [2025-02-06 12:08:13,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f4b207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:13, skipping insertion in model container [2025-02-06 12:08:13,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:13" (1/1) ... [2025-02-06 12:08:13,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:08:14,065 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,096 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,099 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,103 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,125 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,127 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,146 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,147 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,159 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,159 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,160 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,160 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,170 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,170 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,174 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,175 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,193 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,193 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,194 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,194 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,195 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,198 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,198 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,198 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,201 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:14,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:14,223 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) [2025-02-06 12:08:14,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d7fa60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:14, skipping insertion in model container [2025-02-06 12:08:14,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:14,227 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:08:14,229 INFO L158 Benchmark]: Toolchain (without parser) took 493.08ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 73.9MB in the end (delta: 29.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 12:08:14,230 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:08:14,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.10ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 73.9MB in the end (delta: 28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 12:08:14,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.10ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 73.9MB in the end (delta: 28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_BER_test10-2.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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:08:16,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:08:16,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:08:16,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:08:16,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:08:16,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:08:16,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:08:16,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:08:16,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:08:16,236 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:08:16,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:08:16,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:08:16,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:08:16,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:08:16,236 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:08:16,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:08:16,237 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:08:16,238 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:08:16,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:08:16,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:08:16,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:08:16,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:08:16,240 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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2025-02-06 12:08:16,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:08:16,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:08:16,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:08:16,552 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:08:16,553 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:08:16,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-06 12:08:17,914 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9ec7bff4/9e3acd015d2d4ea39295911f33c5b038/FLAGa452c4892 [2025-02-06 12:08:18,268 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:08:18,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2025-02-06 12:08:18,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9ec7bff4/9e3acd015d2d4ea39295911f33c5b038/FLAGa452c4892 [2025-02-06 12:08:18,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9ec7bff4/9e3acd015d2d4ea39295911f33c5b038 [2025-02-06 12:08:18,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:08:18,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:08:18,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:18,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:08:18,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:08:18,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:18" (1/1) ... [2025-02-06 12:08:18,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9826a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:18, skipping insertion in model container [2025-02-06 12:08:18,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:18" (1/1) ... [2025-02-06 12:08:18,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:08:18,730 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,761 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,768 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,775 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,804 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,806 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,808 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,816 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,851 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,856 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,857 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,858 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,876 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,880 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,882 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,883 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,894 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,894 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,904 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,904 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,906 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,906 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,907 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,908 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,912 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:18,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:18,946 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:08:18,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:08:18,995 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,010 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,014 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,016 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,023 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,039 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,046 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,047 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,051 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,072 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,072 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,073 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,078 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,088 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,090 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,091 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,103 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,103 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,104 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,113 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,113 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,114 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,115 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,115 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,117 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,117 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,119 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:19,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:19,131 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:08:19,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:19,273 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:08:19,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19 WrapperNode [2025-02-06 12:08:19,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:19,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:08:19,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:08:19,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:08:19,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,373 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2327 [2025-02-06 12:08:19,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:08:19,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:08:19,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:08:19,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:08:19,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,524 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 106, 420]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 4, 90]. [2025-02-06 12:08:19,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:08:19,601 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:08:19,601 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:08:19,601 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:08:19,602 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (1/1) ... [2025-02-06 12:08:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:08:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:19,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:08:19,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:08:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-02-06 12:08:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 12:08:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:08:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:08:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:08:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:08:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:08:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:08:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:08:19,903 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:08:19,904 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:08:25,038 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 12:08:25,245 INFO L? ?]: Removed 2231 outVars from TransFormulas that were not future-live. [2025-02-06 12:08:25,245 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:08:25,276 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:08:25,277 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:08:25,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:08:25 BoogieIcfgContainer [2025-02-06 12:08:25,277 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:08:25,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:08:25,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:08:25,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:08:25,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:08:18" (1/3) ... [2025-02-06 12:08:25,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0dee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:08:25, skipping insertion in model container [2025-02-06 12:08:25,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:19" (2/3) ... [2025-02-06 12:08:25,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0dee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:08:25, skipping insertion in model container [2025-02-06 12:08:25,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:08:25" (3/3) ... [2025-02-06 12:08:25,284 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2025-02-06 12:08:25,292 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:08:25,294 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-2.i that has 6 procedures, 2309 locations, 1 initial locations, 89 loop locations, and 1091 error locations. [2025-02-06 12:08:25,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:08:25,344 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;@54703796, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:08:25,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2025-02-06 12:08:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 2299 states, 1196 states have (on average 2.1546822742474916) internal successors, (2577), 2285 states have internal predecessors, (2577), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-02-06 12:08:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:08:25,353 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:25,353 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:08:25,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1088REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:25,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2615529, now seen corresponding path program 1 times [2025-02-06 12:08:25,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280708363] [2025-02-06 12:08:25,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:25,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:25,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:08:25,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:08:25,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:08:25,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:25,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:25,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:25,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:25,531 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 [2025-02-06 12:08:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:25,542 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:25,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280708363] [2025-02-06 12:08:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280708363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483617306] [2025-02-06 12:08:25,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:25,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:25,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:25,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:25,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:25,567 INFO L87 Difference]: Start difference. First operand has 2299 states, 1196 states have (on average 2.1546822742474916) internal successors, (2577), 2285 states have internal predecessors, (2577), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:28,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:28,183 INFO L93 Difference]: Finished difference Result 2969 states and 3153 transitions. [2025-02-06 12:08:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:28,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-06 12:08:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:28,209 INFO L225 Difference]: With dead ends: 2969 [2025-02-06 12:08:28,210 INFO L226 Difference]: Without dead ends: 2967 [2025-02-06 12:08:28,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:28,216 INFO L435 NwaCegarLoop]: 1423 mSDtfsCounter, 2165 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:28,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 1907 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-06 12:08:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2025-02-06 12:08:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2446. [2025-02-06 12:08:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 1371 states have (on average 2.0036469730124) internal successors, (2747), 2430 states have internal predecessors, (2747), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 12:08:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2779 transitions. [2025-02-06 12:08:28,333 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2779 transitions. Word has length 3 [2025-02-06 12:08:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:28,333 INFO L471 AbstractCegarLoop]: Abstraction has 2446 states and 2779 transitions. [2025-02-06 12:08:28,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2779 transitions. [2025-02-06 12:08:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:08:28,334 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:28,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:08:28,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:08:28,534 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 [2025-02-06 12:08:28,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2615530, now seen corresponding path program 1 times [2025-02-06 12:08:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:28,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552997845] [2025-02-06 12:08:28,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:28,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:28,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:28,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:28,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:08:28,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:08:28,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:08:28,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:28,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:28,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:28,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:28,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:08:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:28,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:28,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552997845] [2025-02-06 12:08:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552997845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:28,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:28,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521119781] [2025-02-06 12:08:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:28,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:28,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:28,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:28,694 INFO L87 Difference]: Start difference. First operand 2446 states and 2779 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:31,705 INFO L93 Difference]: Finished difference Result 3260 states and 3673 transitions. [2025-02-06 12:08:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-06 12:08:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:31,713 INFO L225 Difference]: With dead ends: 3260 [2025-02-06 12:08:31,714 INFO L226 Difference]: Without dead ends: 3260 [2025-02-06 12:08:31,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:31,715 INFO L435 NwaCegarLoop]: 2061 mSDtfsCounter, 888 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:31,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3391 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-06 12:08:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2025-02-06 12:08:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2932. [2025-02-06 12:08:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 1855 states have (on average 1.9595687331536389) internal successors, (3635), 2913 states have internal predecessors, (3635), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 3673 transitions. [2025-02-06 12:08:31,757 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 3673 transitions. Word has length 3 [2025-02-06 12:08:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:31,757 INFO L471 AbstractCegarLoop]: Abstraction has 2932 states and 3673 transitions. [2025-02-06 12:08:31,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 3673 transitions. [2025-02-06 12:08:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:08:31,758 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:31,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:31,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:08:31,958 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 [2025-02-06 12:08:31,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1085REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:31,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash 70441883, now seen corresponding path program 1 times [2025-02-06 12:08:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:31,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886452709] [2025-02-06 12:08:31,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:31,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:31,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:08:32,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:08:32,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:08:32,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:32,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:32,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:08:32,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:32,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:08:32,189 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-06 12:08:32,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-02-06 12:08:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:32,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:32,239 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886452709] [2025-02-06 12:08:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886452709] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194494812] [2025-02-06 12:08:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:32,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:32,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:32,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:32,240 INFO L87 Difference]: Start difference. First operand 2932 states and 3673 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:38,874 INFO L93 Difference]: Finished difference Result 4637 states and 5163 transitions. [2025-02-06 12:08:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 12:08:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:38,887 INFO L225 Difference]: With dead ends: 4637 [2025-02-06 12:08:38,888 INFO L226 Difference]: Without dead ends: 4637 [2025-02-06 12:08:38,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:38,891 INFO L435 NwaCegarLoop]: 2342 mSDtfsCounter, 2362 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:38,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 4996 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2025-02-06 12:08:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2025-02-06 12:08:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 3224. [2025-02-06 12:08:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 2147 states have (on average 1.9562179785747555) internal successors, (4200), 3205 states have internal predecessors, (4200), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4238 transitions. [2025-02-06 12:08:38,976 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4238 transitions. Word has length 8 [2025-02-06 12:08:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:38,978 INFO L471 AbstractCegarLoop]: Abstraction has 3224 states and 4238 transitions. [2025-02-06 12:08:38,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4238 transitions. [2025-02-06 12:08:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:08:38,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:38,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:38,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:08:39,183 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 [2025-02-06 12:08:39,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:39,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2111266401, now seen corresponding path program 1 times [2025-02-06 12:08:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309553391] [2025-02-06 12:08:39,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:39,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:39,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:39,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:08:39,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:08:39,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:08:39,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:39,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:39,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:39,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:39,326 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 [2025-02-06 12:08:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:39,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:39,334 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309553391] [2025-02-06 12:08:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309553391] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:39,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:39,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50716394] [2025-02-06 12:08:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:39,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:39,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:39,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:39,335 INFO L87 Difference]: Start difference. First operand 3224 states and 4238 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-06 12:08:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:42,024 INFO L93 Difference]: Finished difference Result 3949 states and 5002 transitions. [2025-02-06 12:08:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-02-06 12:08:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:42,034 INFO L225 Difference]: With dead ends: 3949 [2025-02-06 12:08:42,034 INFO L226 Difference]: Without dead ends: 3949 [2025-02-06 12:08:42,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:42,035 INFO L435 NwaCegarLoop]: 2260 mSDtfsCounter, 1941 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:42,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 2952 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 12:08:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2025-02-06 12:08:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3132. [2025-02-06 12:08:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2147 states have (on average 1.8938053097345133) internal successors, (4066), 3113 states have internal predecessors, (4066), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4104 transitions. [2025-02-06 12:08:42,074 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4104 transitions. Word has length 9 [2025-02-06 12:08:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:42,074 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 4104 transitions. [2025-02-06 12:08:42,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-06 12:08:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4104 transitions. [2025-02-06 12:08:42,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:08:42,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:42,075 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:42,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:08:42,275 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 [2025-02-06 12:08:42,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:42,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2111266400, now seen corresponding path program 1 times [2025-02-06 12:08:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816623364] [2025-02-06 12:08:42,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:42,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:42,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:08:42,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:08:42,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:08:42,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:42,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:42,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:42,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:42,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:08:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:42,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:42,546 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816623364] [2025-02-06 12:08:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816623364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:42,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:42,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283456806] [2025-02-06 12:08:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:42,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:42,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:42,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:42,547 INFO L87 Difference]: Start difference. First operand 3132 states and 4104 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-06 12:08:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:46,287 INFO L93 Difference]: Finished difference Result 4775 states and 6235 transitions. [2025-02-06 12:08:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-02-06 12:08:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:46,299 INFO L225 Difference]: With dead ends: 4775 [2025-02-06 12:08:46,299 INFO L226 Difference]: Without dead ends: 4775 [2025-02-06 12:08:46,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:46,300 INFO L435 NwaCegarLoop]: 2614 mSDtfsCounter, 1442 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:46,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3743 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-02-06 12:08:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2025-02-06 12:08:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 3304. [2025-02-06 12:08:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 2329 states have (on average 1.8767711464147703) internal successors, (4371), 3285 states have internal predecessors, (4371), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4409 transitions. [2025-02-06 12:08:46,359 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4409 transitions. Word has length 9 [2025-02-06 12:08:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:46,359 INFO L471 AbstractCegarLoop]: Abstraction has 3304 states and 4409 transitions. [2025-02-06 12:08:46,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-02-06 12:08:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4409 transitions. [2025-02-06 12:08:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:08:46,360 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:46,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:46,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:08:46,564 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 [2025-02-06 12:08:46,564 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr451REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:46,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1366041911, now seen corresponding path program 1 times [2025-02-06 12:08:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61090195] [2025-02-06 12:08:46,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:46,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:46,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:46,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:08:46,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:08:46,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:08:46,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:46,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:46,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:08:46,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:46,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:08:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:46,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:46,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:46,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61090195] [2025-02-06 12:08:46,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61090195] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:46,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:46,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67507213] [2025-02-06 12:08:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:46,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:46,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:46,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:46,828 INFO L87 Difference]: Start difference. First operand 3304 states and 4409 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:50,891 INFO L93 Difference]: Finished difference Result 4082 states and 5259 transitions. [2025-02-06 12:08:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-02-06 12:08:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:50,909 INFO L225 Difference]: With dead ends: 4082 [2025-02-06 12:08:50,909 INFO L226 Difference]: Without dead ends: 4082 [2025-02-06 12:08:50,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:50,911 INFO L435 NwaCegarLoop]: 1973 mSDtfsCounter, 883 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 4423 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:50,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 4423 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-02-06 12:08:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2025-02-06 12:08:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3353. [2025-02-06 12:08:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 2378 states have (on average 1.8708999158957107) internal successors, (4449), 3334 states have internal predecessors, (4449), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4487 transitions. [2025-02-06 12:08:50,959 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4487 transitions. Word has length 12 [2025-02-06 12:08:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:50,959 INFO L471 AbstractCegarLoop]: Abstraction has 3353 states and 4487 transitions. [2025-02-06 12:08:50,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4487 transitions. [2025-02-06 12:08:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:08:50,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:50,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:50,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:08:51,160 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 [2025-02-06 12:08:51,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr450REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:51,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1366041910, now seen corresponding path program 1 times [2025-02-06 12:08:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795708279] [2025-02-06 12:08:51,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:51,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:51,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:51,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:51,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:08:51,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:08:51,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:08:51,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:51,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:51,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:51,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:51,334 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 [2025-02-06 12:08:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:51,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:51,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795708279] [2025-02-06 12:08:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795708279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:51,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844946172] [2025-02-06 12:08:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:51,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:51,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:51,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:51,374 INFO L87 Difference]: Start difference. First operand 3353 states and 4487 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:54,279 INFO L93 Difference]: Finished difference Result 3822 states and 4790 transitions. [2025-02-06 12:08:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-02-06 12:08:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:54,287 INFO L225 Difference]: With dead ends: 3822 [2025-02-06 12:08:54,287 INFO L226 Difference]: Without dead ends: 3822 [2025-02-06 12:08:54,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:54,287 INFO L435 NwaCegarLoop]: 1371 mSDtfsCounter, 2126 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:54,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 3078 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-06 12:08:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2025-02-06 12:08:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3330. [2025-02-06 12:08:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 2378 states have (on average 1.8448275862068966) internal successors, (4387), 3311 states have internal predecessors, (4387), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4425 transitions. [2025-02-06 12:08:54,326 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4425 transitions. Word has length 12 [2025-02-06 12:08:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:54,326 INFO L471 AbstractCegarLoop]: Abstraction has 3330 states and 4425 transitions. [2025-02-06 12:08:54,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4425 transitions. [2025-02-06 12:08:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 12:08:54,327 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:54,327 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:54,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:08:54,531 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 [2025-02-06 12:08:54,531 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:54,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash -602417189, now seen corresponding path program 1 times [2025-02-06 12:08:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:54,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540355566] [2025-02-06 12:08:54,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:54,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:54,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:08:54,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:08:54,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:08:54,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:54,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:54,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:54,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:54,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:54,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:54,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540355566] [2025-02-06 12:08:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540355566] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:54,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882736951] [2025-02-06 12:08:54,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:54,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:54,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:54,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:54,731 INFO L87 Difference]: Start difference. First operand 3330 states and 4425 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:54,826 INFO L93 Difference]: Finished difference Result 3252 states and 4304 transitions. [2025-02-06 12:08:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:08:54,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2025-02-06 12:08:54,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:54,837 INFO L225 Difference]: With dead ends: 3252 [2025-02-06 12:08:54,838 INFO L226 Difference]: Without dead ends: 3252 [2025-02-06 12:08:54,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:54,839 INFO L435 NwaCegarLoop]: 2205 mSDtfsCounter, 45 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6592 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:54,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6592 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:08:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2025-02-06 12:08:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3246. [2025-02-06 12:08:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2313 states have (on average 1.841763942931258) internal successors, (4260), 3227 states have internal predecessors, (4260), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4298 transitions. [2025-02-06 12:08:54,877 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4298 transitions. Word has length 13 [2025-02-06 12:08:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:54,877 INFO L471 AbstractCegarLoop]: Abstraction has 3246 states and 4298 transitions. [2025-02-06 12:08:54,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4298 transitions. [2025-02-06 12:08:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 12:08:54,878 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:54,878 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] [2025-02-06 12:08:54,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:08:55,083 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 [2025-02-06 12:08:55,083 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1072REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:55,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1101186703, now seen corresponding path program 1 times [2025-02-06 12:08:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790553673] [2025-02-06 12:08:55,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:55,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:55,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:55,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:08:55,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:08:55,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:08:55,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:55,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:55,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:55,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:55,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:55,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790553673] [2025-02-06 12:08:55,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790553673] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:55,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:55,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:55,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228659819] [2025-02-06 12:08:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:55,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:55,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:55,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:55,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:55,287 INFO L87 Difference]: Start difference. First operand 3246 states and 4298 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:58,355 INFO L93 Difference]: Finished difference Result 3940 states and 5037 transitions. [2025-02-06 12:08:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:58,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2025-02-06 12:08:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:58,361 INFO L225 Difference]: With dead ends: 3940 [2025-02-06 12:08:58,361 INFO L226 Difference]: Without dead ends: 3940 [2025-02-06 12:08:58,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:58,362 INFO L435 NwaCegarLoop]: 2110 mSDtfsCounter, 1905 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:58,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 4388 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-06 12:08:58,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2025-02-06 12:08:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3223. [2025-02-06 12:08:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2313 states have (on average 1.8218763510592304) internal successors, (4214), 3204 states have internal predecessors, (4214), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:08:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4252 transitions. [2025-02-06 12:08:58,402 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4252 transitions. Word has length 21 [2025-02-06 12:08:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:58,403 INFO L471 AbstractCegarLoop]: Abstraction has 3223 states and 4252 transitions. [2025-02-06 12:08:58,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4252 transitions. [2025-02-06 12:08:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 12:08:58,404 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:58,404 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] [2025-02-06 12:08:58,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:08:58,605 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 [2025-02-06 12:08:58,605 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:08:58,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1101186704, now seen corresponding path program 1 times [2025-02-06 12:08:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970787198] [2025-02-06 12:08:58,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:58,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:58,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:08:58,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:08:58,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:08:58,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:08:58,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:58,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:58,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:08:58,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:58,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:08:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:58,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:58,877 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:58,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970787198] [2025-02-06 12:08:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970787198] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:58,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169809188] [2025-02-06 12:08:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:58,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:58,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:58,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:58,878 INFO L87 Difference]: Start difference. First operand 3223 states and 4252 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:02,849 INFO L93 Difference]: Finished difference Result 4694 states and 6035 transitions. [2025-02-06 12:09:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:09:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2025-02-06 12:09:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:02,856 INFO L225 Difference]: With dead ends: 4694 [2025-02-06 12:09:02,856 INFO L226 Difference]: Without dead ends: 4694 [2025-02-06 12:09:02,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:02,857 INFO L435 NwaCegarLoop]: 2463 mSDtfsCounter, 1477 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5233 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:02,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 5233 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-02-06 12:09:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2025-02-06 12:09:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 3337. [2025-02-06 12:09:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 2427 states have (on average 1.7931602801812938) internal successors, (4352), 3318 states have internal predecessors, (4352), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:09:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 4390 transitions. [2025-02-06 12:09:02,884 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 4390 transitions. Word has length 21 [2025-02-06 12:09:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:02,884 INFO L471 AbstractCegarLoop]: Abstraction has 3337 states and 4390 transitions. [2025-02-06 12:09:02,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 4390 transitions. [2025-02-06 12:09:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 12:09:02,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:02,886 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] [2025-02-06 12:09:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:03,090 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 [2025-02-06 12:09:03,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr764REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:03,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash 509517604, now seen corresponding path program 1 times [2025-02-06 12:09:03,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:03,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485292226] [2025-02-06 12:09:03,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:03,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:03,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:09:03,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:09:03,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:09:03,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:03,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:03,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:03,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:03,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:03,281 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485292226] [2025-02-06 12:09:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485292226] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:09:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54774452] [2025-02-06 12:09:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:03,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:03,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:03,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:03,282 INFO L87 Difference]: Start difference. First operand 3337 states and 4390 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:06,289 INFO L93 Difference]: Finished difference Result 4039 states and 5091 transitions. [2025-02-06 12:09:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:09:06,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2025-02-06 12:09:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:06,294 INFO L225 Difference]: With dead ends: 4039 [2025-02-06 12:09:06,294 INFO L226 Difference]: Without dead ends: 4039 [2025-02-06 12:09:06,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:06,295 INFO L435 NwaCegarLoop]: 2110 mSDtfsCounter, 1882 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:06,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 4388 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-06 12:09:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2025-02-06 12:09:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 3314. [2025-02-06 12:09:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 2427 states have (on average 1.7552533992583437) internal successors, (4260), 3295 states have internal predecessors, (4260), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:09:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4298 transitions. [2025-02-06 12:09:06,316 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4298 transitions. Word has length 21 [2025-02-06 12:09:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:06,316 INFO L471 AbstractCegarLoop]: Abstraction has 3314 states and 4298 transitions. [2025-02-06 12:09:06,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4298 transitions. [2025-02-06 12:09:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 12:09:06,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:06,317 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] [2025-02-06 12:09:06,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:09:06,521 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 [2025-02-06 12:09:06,521 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:06,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 509517605, now seen corresponding path program 1 times [2025-02-06 12:09:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811600725] [2025-02-06 12:09:06,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:06,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:06,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:09:06,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:09:06,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:09:06,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:06,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:06,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:09:06,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:06,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:09:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:06,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:06,748 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:06,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811600725] [2025-02-06 12:09:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811600725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:09:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80473083] [2025-02-06 12:09:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:06,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:06,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:06,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:06,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:06,749 INFO L87 Difference]: Start difference. First operand 3314 states and 4298 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:11,257 INFO L93 Difference]: Finished difference Result 4762 states and 6081 transitions. [2025-02-06 12:09:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:09:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2025-02-06 12:09:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:11,268 INFO L225 Difference]: With dead ends: 4762 [2025-02-06 12:09:11,268 INFO L226 Difference]: Without dead ends: 4762 [2025-02-06 12:09:11,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:11,269 INFO L435 NwaCegarLoop]: 2440 mSDtfsCounter, 1454 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5164 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:11,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5164 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-06 12:09:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2025-02-06 12:09:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 3428. [2025-02-06 12:09:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 2541 states have (on average 1.730814639905549) internal successors, (4398), 3409 states have internal predecessors, (4398), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:09:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 4436 transitions. [2025-02-06 12:09:11,348 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 4436 transitions. Word has length 21 [2025-02-06 12:09:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:11,348 INFO L471 AbstractCegarLoop]: Abstraction has 3428 states and 4436 transitions. [2025-02-06 12:09:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 4436 transitions. [2025-02-06 12:09:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 12:09:11,349 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:11,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:09:11,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:11,549 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 [2025-02-06 12:09:11,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:11,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash 269790071, now seen corresponding path program 1 times [2025-02-06 12:09:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:11,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202335043] [2025-02-06 12:09:11,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:11,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:11,556 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:11,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:09:11,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 12:09:11,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 12:09:11,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:11,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:11,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:09:11,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:11,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:09:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:11,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:09:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:12,314 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202335043] [2025-02-06 12:09:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202335043] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:09:12,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:09:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:09:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144248536] [2025-02-06 12:09:12,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:09:12,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:09:12,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:12,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:09:12,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:09:12,315 INFO L87 Difference]: Start difference. First operand 3428 states and 4436 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:25,935 INFO L93 Difference]: Finished difference Result 5149 states and 6611 transitions. [2025-02-06 12:09:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:09:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 40 [2025-02-06 12:09:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:25,939 INFO L225 Difference]: With dead ends: 5149 [2025-02-06 12:09:25,939 INFO L226 Difference]: Without dead ends: 5149 [2025-02-06 12:09:25,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:09:25,939 INFO L435 NwaCegarLoop]: 2436 mSDtfsCounter, 3617 mSDsluCounter, 7704 mSDsCounter, 0 mSdLazyCounter, 6969 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 10140 SdHoareTripleChecker+Invalid, 7001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:25,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3623 Valid, 10140 Invalid, 7001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 6969 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2025-02-06 12:09:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5149 states. [2025-02-06 12:09:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5149 to 3592. [2025-02-06 12:09:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2705 states have (on average 1.7116451016635859) internal successors, (4630), 3573 states have internal predecessors, (4630), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:09:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 4668 transitions. [2025-02-06 12:09:25,988 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 4668 transitions. Word has length 40 [2025-02-06 12:09:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:25,989 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 4668 transitions. [2025-02-06 12:09:25,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 4668 transitions. [2025-02-06 12:09:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 12:09:25,989 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:25,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:09:25,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:09:26,190 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 [2025-02-06 12:09:26,190 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:26,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1182545544, now seen corresponding path program 1 times [2025-02-06 12:09:26,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284221164] [2025-02-06 12:09:26,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:26,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:26,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:26,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:09:26,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 12:09:26,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 12:09:26,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:26,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:26,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:09:26,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:26,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:09:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:26,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:09:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:26,927 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:26,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284221164] [2025-02-06 12:09:26,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284221164] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:09:26,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:09:26,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:09:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051337662] [2025-02-06 12:09:26,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:09:26,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:09:26,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:26,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:09:26,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:09:26,928 INFO L87 Difference]: Start difference. First operand 3592 states and 4668 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:36,247 INFO L93 Difference]: Finished difference Result 5313 states and 6843 transitions. [2025-02-06 12:09:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:09:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 40 [2025-02-06 12:09:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:36,251 INFO L225 Difference]: With dead ends: 5313 [2025-02-06 12:09:36,251 INFO L226 Difference]: Without dead ends: 5313 [2025-02-06 12:09:36,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:09:36,252 INFO L435 NwaCegarLoop]: 2438 mSDtfsCounter, 3874 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 4340 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 6926 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:36,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3880 Valid, 6926 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4340 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2025-02-06 12:09:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2025-02-06 12:09:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 3756. [2025-02-06 12:09:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2869 states have (on average 1.6946671314046706) internal successors, (4862), 3737 states have internal predecessors, (4862), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 12:09:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 4900 transitions. [2025-02-06 12:09:36,300 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 4900 transitions. Word has length 40 [2025-02-06 12:09:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:36,301 INFO L471 AbstractCegarLoop]: Abstraction has 3756 states and 4900 transitions. [2025-02-06 12:09:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 4900 transitions. [2025-02-06 12:09:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 12:09:36,303 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:36,303 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] [2025-02-06 12:09:36,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:09:36,504 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 [2025-02-06 12:09:36,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr404REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:36,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2016762595, now seen corresponding path program 1 times [2025-02-06 12:09:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489333042] [2025-02-06 12:09:36,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:36,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:36,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:36,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:09:36,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 12:09:36,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 12:09:36,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:36,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:36,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:36,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:36,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:36,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489333042] [2025-02-06 12:09:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489333042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:09:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245934900] [2025-02-06 12:09:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:36,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:09:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:36,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:09:36,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:09:36,817 INFO L87 Difference]: Start difference. First operand 3756 states and 4900 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:37,005 INFO L93 Difference]: Finished difference Result 5341 states and 6598 transitions. [2025-02-06 12:09:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:09:37,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-06 12:09:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:37,010 INFO L225 Difference]: With dead ends: 5341 [2025-02-06 12:09:37,011 INFO L226 Difference]: Without dead ends: 5341 [2025-02-06 12:09:37,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:09:37,012 INFO L435 NwaCegarLoop]: 2254 mSDtfsCounter, 1455 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:37,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 4333 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:09:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2025-02-06 12:09:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 4474. [2025-02-06 12:09:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 3583 states have (on average 1.6882500697739324) internal successors, (6049), 4448 states have internal predecessors, (6049), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-06 12:09:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6101 transitions. [2025-02-06 12:09:37,049 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6101 transitions. Word has length 42 [2025-02-06 12:09:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:37,050 INFO L471 AbstractCegarLoop]: Abstraction has 4474 states and 6101 transitions. [2025-02-06 12:09:37,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6101 transitions. [2025-02-06 12:09:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-06 12:09:37,051 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:37,051 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] [2025-02-06 12:09:37,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:09:37,252 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 [2025-02-06 12:09:37,253 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:37,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1280575689, now seen corresponding path program 1 times [2025-02-06 12:09:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729285790] [2025-02-06 12:09:37,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:37,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:37,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:37,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:09:37,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-06 12:09:37,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:09:37,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:37,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:37,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:37,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:37,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:37,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:37,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729285790] [2025-02-06 12:09:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729285790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412525920] [2025-02-06 12:09:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:37,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:37,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:37,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:37,521 INFO L87 Difference]: Start difference. First operand 4474 states and 6101 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:37,568 INFO L93 Difference]: Finished difference Result 4456 states and 6067 transitions. [2025-02-06 12:09:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:09:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-02-06 12:09:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:37,573 INFO L225 Difference]: With dead ends: 4456 [2025-02-06 12:09:37,573 INFO L226 Difference]: Without dead ends: 4456 [2025-02-06 12:09:37,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:37,573 INFO L435 NwaCegarLoop]: 2161 mSDtfsCounter, 27 mSDsluCounter, 4285 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:37,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6446 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:09:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2025-02-06 12:09:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4456. [2025-02-06 12:09:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3565 states have (on average 1.6872370266479664) internal successors, (6015), 4430 states have internal predecessors, (6015), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-06 12:09:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6067 transitions. [2025-02-06 12:09:37,630 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6067 transitions. Word has length 52 [2025-02-06 12:09:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:37,631 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 6067 transitions. [2025-02-06 12:09:37,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6067 transitions. [2025-02-06 12:09:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 12:09:37,631 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:37,631 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] [2025-02-06 12:09:37,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 12:09:37,836 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 [2025-02-06 12:09:37,836 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr712REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:37,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1992120524, now seen corresponding path program 1 times [2025-02-06 12:09:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:37,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152384900] [2025-02-06 12:09:37,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:37,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:37,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:37,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:37,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:09:37,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-06 12:09:38,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 12:09:38,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:38,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:38,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:38,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:38,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:38,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:38,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152384900] [2025-02-06 12:09:38,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152384900] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:38,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:38,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:09:38,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781650882] [2025-02-06 12:09:38,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:38,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:09:38,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:38,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:09:38,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:09:38,167 INFO L87 Difference]: Start difference. First operand 4456 states and 6067 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:38,276 INFO L93 Difference]: Finished difference Result 5822 states and 7526 transitions. [2025-02-06 12:09:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:09:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2025-02-06 12:09:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:38,281 INFO L225 Difference]: With dead ends: 5822 [2025-02-06 12:09:38,281 INFO L226 Difference]: Without dead ends: 5822 [2025-02-06 12:09:38,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:09:38,282 INFO L435 NwaCegarLoop]: 2180 mSDtfsCounter, 1332 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:38,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 4293 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:09:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2025-02-06 12:09:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5193. [2025-02-06 12:09:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 4298 states have (on average 1.681945090739879) internal successors, (7229), 5160 states have internal predecessors, (7229), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-06 12:09:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 7295 transitions. [2025-02-06 12:09:38,354 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 7295 transitions. Word has length 53 [2025-02-06 12:09:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:38,354 INFO L471 AbstractCegarLoop]: Abstraction has 5193 states and 7295 transitions. [2025-02-06 12:09:38,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 7295 transitions. [2025-02-06 12:09:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 12:09:38,355 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:38,355 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] [2025-02-06 12:09:38,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:09:38,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:38,561 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:38,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1945158478, now seen corresponding path program 1 times [2025-02-06 12:09:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592573532] [2025-02-06 12:09:38,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:38,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:38,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:38,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 12:09:38,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 12:09:38,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 12:09:38,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:38,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:38,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:38,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:38,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:38,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592573532] [2025-02-06 12:09:38,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592573532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:38,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:38,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:38,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233402920] [2025-02-06 12:09:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:38,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:38,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:38,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:38,811 INFO L87 Difference]: Start difference. First operand 5193 states and 7295 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:38,876 INFO L93 Difference]: Finished difference Result 4738 states and 6641 transitions. [2025-02-06 12:09:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:09:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-02-06 12:09:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:38,880 INFO L225 Difference]: With dead ends: 4738 [2025-02-06 12:09:38,880 INFO L226 Difference]: Without dead ends: 4738 [2025-02-06 12:09:38,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:38,882 INFO L435 NwaCegarLoop]: 2115 mSDtfsCounter, 56 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6272 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 [2025-02-06 12:09:38,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6272 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:09:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2025-02-06 12:09:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4735. [2025-02-06 12:09:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4735 states, 3863 states have (on average 1.701268444214341) internal successors, (6572), 4702 states have internal predecessors, (6572), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-06 12:09:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 6638 transitions. [2025-02-06 12:09:38,938 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 6638 transitions. Word has length 56 [2025-02-06 12:09:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:38,938 INFO L471 AbstractCegarLoop]: Abstraction has 4735 states and 6638 transitions. [2025-02-06 12:09:38,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 6638 transitions. [2025-02-06 12:09:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 12:09:38,939 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:38,939 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] [2025-02-06 12:09:38,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:09:39,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:39,140 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:39,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -596218189, now seen corresponding path program 1 times [2025-02-06 12:09:39,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:39,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670784974] [2025-02-06 12:09:39,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:39,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:39,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:39,143 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:39,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:09:39,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 12:09:39,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 12:09:39,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:39,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:39,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:09:39,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:39,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:39,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:39,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670784974] [2025-02-06 12:09:39,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670784974] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:39,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:39,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374177180] [2025-02-06 12:09:39,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:39,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:39,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:39,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:39,423 INFO L87 Difference]: Start difference. First operand 4735 states and 6638 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:39,486 INFO L93 Difference]: Finished difference Result 4271 states and 5896 transitions. [2025-02-06 12:09:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:09:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-02-06 12:09:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:39,490 INFO L225 Difference]: With dead ends: 4271 [2025-02-06 12:09:39,490 INFO L226 Difference]: Without dead ends: 4271 [2025-02-06 12:09:39,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:39,490 INFO L435 NwaCegarLoop]: 2080 mSDtfsCounter, 76 mSDsluCounter, 4067 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6147 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 [2025-02-06 12:09:39,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6147 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:09:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2025-02-06 12:09:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4264. [2025-02-06 12:09:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 3404 states have (on average 1.7106345475910694) internal successors, (5823), 4231 states have internal predecessors, (5823), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-06 12:09:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 5889 transitions. [2025-02-06 12:09:39,537 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 5889 transitions. Word has length 56 [2025-02-06 12:09:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:39,537 INFO L471 AbstractCegarLoop]: Abstraction has 4264 states and 5889 transitions. [2025-02-06 12:09:39,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 5889 transitions. [2025-02-06 12:09:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 12:09:39,537 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:39,537 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] [2025-02-06 12:09:39,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:09:39,738 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 [2025-02-06 12:09:39,738 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:39,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1291631, now seen corresponding path program 1 times [2025-02-06 12:09:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644190923] [2025-02-06 12:09:39,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:39,741 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:09:39,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 12:09:39,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 12:09:39,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:39,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:39,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:09:39,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:39,923 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:09:39,924 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:09:39,924 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:09:39,929 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 30 treesize of output 39 [2025-02-06 12:09:39,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:09:39,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-02-06 12:09:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:39,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:39,973 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:39,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644190923] [2025-02-06 12:09:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644190923] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751214185] [2025-02-06 12:09:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:39,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:39,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:39,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:39,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:39,974 INFO L87 Difference]: Start difference. First operand 4264 states and 5889 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:40,373 INFO L93 Difference]: Finished difference Result 4841 states and 6383 transitions. [2025-02-06 12:09:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:09:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-06 12:09:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:40,377 INFO L225 Difference]: With dead ends: 4841 [2025-02-06 12:09:40,377 INFO L226 Difference]: Without dead ends: 4841 [2025-02-06 12:09:40,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:40,378 INFO L435 NwaCegarLoop]: 2301 mSDtfsCounter, 923 mSDsluCounter, 4269 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 6570 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:40,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 6570 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 12:09:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2025-02-06 12:09:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 3980. [2025-02-06 12:09:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3123 states have (on average 1.718539865513929) internal successors, (5367), 3950 states have internal predecessors, (5367), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-02-06 12:09:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5427 transitions. [2025-02-06 12:09:40,409 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5427 transitions. Word has length 60 [2025-02-06 12:09:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:40,409 INFO L471 AbstractCegarLoop]: Abstraction has 3980 states and 5427 transitions. [2025-02-06 12:09:40,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5427 transitions. [2025-02-06 12:09:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-06 12:09:40,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:40,410 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] [2025-02-06 12:09:40,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:40,614 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash -493316870, now seen corresponding path program 1 times [2025-02-06 12:09:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929218059] [2025-02-06 12:09:40,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:40,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:40,617 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:40,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 12:09:40,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-06 12:09:40,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-06 12:09:40,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:40,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:40,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:09:40,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:40,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:09:40,880 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 [2025-02-06 12:09:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:09:41,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 12:09:41,217 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:09:41,217 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 [2025-02-06 12:09:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:41,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:41,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929218059] [2025-02-06 12:09:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929218059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:41,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:41,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:09:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196899225] [2025-02-06 12:09:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:41,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:09:41,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:41,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:09:41,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:41,230 INFO L87 Difference]: Start difference. First operand 3980 states and 5427 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:43,698 INFO L93 Difference]: Finished difference Result 3896 states and 5239 transitions. [2025-02-06 12:09:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:09:43,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-02-06 12:09:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:43,703 INFO L225 Difference]: With dead ends: 3896 [2025-02-06 12:09:43,703 INFO L226 Difference]: Without dead ends: 3896 [2025-02-06 12:09:43,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:09:43,704 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 3352 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:43,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3362 Valid, 1054 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 12:09:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2025-02-06 12:09:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3783. [2025-02-06 12:09:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3010 states have (on average 1.6514950166112956) internal successors, (4971), 3753 states have internal predecessors, (4971), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-02-06 12:09:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5031 transitions. [2025-02-06 12:09:43,734 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5031 transitions. Word has length 64 [2025-02-06 12:09:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:43,734 INFO L471 AbstractCegarLoop]: Abstraction has 3783 states and 5031 transitions. [2025-02-06 12:09:43,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5031 transitions. [2025-02-06 12:09:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 12:09:43,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:43,735 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, 1, 1] [2025-02-06 12:09:43,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:43,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:43,936 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:43,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1226447622, now seen corresponding path program 1 times [2025-02-06 12:09:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:43,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541029288] [2025-02-06 12:09:43,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:43,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:43,939 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:43,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 12:09:44,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 12:09:44,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 12:09:44,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:44,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:44,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:09:44,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:44,187 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 [2025-02-06 12:09:44,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:09:44,209 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 [2025-02-06 12:09:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:44,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:44,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541029288] [2025-02-06 12:09:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541029288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:44,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620661321] [2025-02-06 12:09:44,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:09:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:44,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:09:44,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:44,217 INFO L87 Difference]: Start difference. First operand 3783 states and 5031 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:46,918 INFO L93 Difference]: Finished difference Result 3782 states and 5029 transitions. [2025-02-06 12:09:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:09:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-02-06 12:09:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:46,924 INFO L225 Difference]: With dead ends: 3782 [2025-02-06 12:09:46,928 INFO L226 Difference]: Without dead ends: 3782 [2025-02-06 12:09:46,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:09:46,933 INFO L435 NwaCegarLoop]: 2006 mSDtfsCounter, 2 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:46,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5436 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-02-06 12:09:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2025-02-06 12:09:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3782. [2025-02-06 12:09:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3010 states have (on average 1.650830564784053) internal successors, (4969), 3752 states have internal predecessors, (4969), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-02-06 12:09:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5029 transitions. [2025-02-06 12:09:46,961 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5029 transitions. Word has length 69 [2025-02-06 12:09:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:46,962 INFO L471 AbstractCegarLoop]: Abstraction has 3782 states and 5029 transitions. [2025-02-06 12:09:46,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5029 transitions. [2025-02-06 12:09:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 12:09:46,962 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:46,962 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, 1, 1] [2025-02-06 12:09:46,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:47,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:47,167 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr985REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:47,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1226447621, now seen corresponding path program 1 times [2025-02-06 12:09:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:47,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640066043] [2025-02-06 12:09:47,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:47,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:47,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:47,171 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:47,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 12:09:47,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 12:09:47,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 12:09:47,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:47,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:47,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:09:47,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:47,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:09:47,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:09:47,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:09:47,482 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 [2025-02-06 12:09:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:47,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:47,494 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:47,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640066043] [2025-02-06 12:09:47,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640066043] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:47,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:47,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:47,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656550348] [2025-02-06 12:09:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:47,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:09:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:47,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:09:47,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:47,495 INFO L87 Difference]: Start difference. First operand 3782 states and 5029 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:50,998 INFO L93 Difference]: Finished difference Result 3781 states and 5027 transitions. [2025-02-06 12:09:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:09:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-02-06 12:09:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:51,002 INFO L225 Difference]: With dead ends: 3781 [2025-02-06 12:09:51,002 INFO L226 Difference]: Without dead ends: 3781 [2025-02-06 12:09:51,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:09:51,003 INFO L435 NwaCegarLoop]: 2006 mSDtfsCounter, 1 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:51,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5380 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-06 12:09:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2025-02-06 12:09:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3781. [2025-02-06 12:09:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3008 states have (on average 1.6512632978723405) internal successors, (4967), 3751 states have internal predecessors, (4967), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-02-06 12:09:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5027 transitions. [2025-02-06 12:09:51,029 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5027 transitions. Word has length 69 [2025-02-06 12:09:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:51,029 INFO L471 AbstractCegarLoop]: Abstraction has 3781 states and 5027 transitions. [2025-02-06 12:09:51,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:09:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5027 transitions. [2025-02-06 12:09:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 12:09:51,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:51,030 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, 1, 1] [2025-02-06 12:09:51,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-06 12:09:51,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:51,232 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr676REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-02-06 12:09:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1174602127, now seen corresponding path program 1 times [2025-02-06 12:09:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112290911] [2025-02-06 12:09:51,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:51,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:51,235 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:09:51,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 12:09:51,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 12:09:51,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 12:09:51,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:51,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:51,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:09:51,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:51,495 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 [2025-02-06 12:09:51,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:09:51,535 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 [2025-02-06 12:09:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:51,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:09:51,546 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112290911] [2025-02-06 12:09:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112290911] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:09:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:09:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:09:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528912811] [2025-02-06 12:09:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:09:51,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:09:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:51,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:09:51,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:09:51,547 INFO L87 Difference]: Start difference. First operand 3781 states and 5027 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)