./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.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_test7-2.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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:10:50,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:10:50,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:10:50,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:10:50,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:10:50,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:10:50,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:10:50,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:10:50,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:10:50,807 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:10:50,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:10:50,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:10:50,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:10:50,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:10:50,807 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:10:50,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:10:50,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:10:50,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:10:50,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:10:50,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:10:50,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:10:50,810 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 -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2025-02-06 12:10:51,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:10:51,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:10:51,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:10:51,031 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:10:51,031 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:10:51,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2025-02-06 12:10:52,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b71839c9/152e4907a7994b408e9cb2bc661194ec/FLAG5a0b90257 [2025-02-06 12:10:52,527 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:10:52,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2025-02-06 12:10:52,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b71839c9/152e4907a7994b408e9cb2bc661194ec/FLAG5a0b90257 [2025-02-06 12:10:52,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b71839c9/152e4907a7994b408e9cb2bc661194ec [2025-02-06 12:10:52,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:10:52,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:10:52,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:10:52,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:10:52,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:10:52,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:10:52" (1/1) ... [2025-02-06 12:10:52,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f06b001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:52, skipping insertion in model container [2025-02-06 12:10:52,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:10:52" (1/1) ... [2025-02-06 12:10:52,805 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:10:53,027 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 12:10:53,045 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 12:10:53,050 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 12:10:53,053 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 12:10:53,057 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 12:10:53,092 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 12:10:53,092 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 12:10:53,097 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 12:10:53,097 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 12:10:53,099 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 12:10:53,100 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 12:10:53,101 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 12:10:53,101 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 12:10:53,104 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 12:10:53,105 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 12:10:53,111 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 12:10:53,112 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 12:10:53,112 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 12:10:53,113 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 12:10:53,115 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 12:10:53,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:10:53,127 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 12:10:53,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cd35e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:53, skipping insertion in model container [2025-02-06 12:10:53,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:10:53,128 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:10:53,129 INFO L158 Benchmark]: Toolchain (without parser) took 362.46ms. Allocated memory is still 201.3MB. Free memory was 156.3MB in the beginning and 136.4MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:10:53,130 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 209.7MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:10:53,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.55ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 136.4MB in the end (delta: 19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:10:53,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 209.7MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.55ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 136.4MB in the end (delta: 19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 727]: 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_test7-2.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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:10:54,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:10:55,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:10:55,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:10:55,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:10:55,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:10:55,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:10:55,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:10:55,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:10:55,105 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:10:55,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:10:55,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:10:55,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:10:55,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:10:55,106 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:10:55,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:10:55,106 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:10:55,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:10:55,108 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:10:55,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:10:55,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:10:55,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:10:55,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:10:55,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:10:55,110 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 -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2025-02-06 12:10:55,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:10:55,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:10:55,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:10:55,560 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:10:55,562 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:10:55,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2025-02-06 12:10:56,757 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52a78d560/5ae5e2b25c81453fbf597430d6f583f3/FLAG9f5128c36 [2025-02-06 12:10:57,004 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:10:57,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2025-02-06 12:10:57,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52a78d560/5ae5e2b25c81453fbf597430d6f583f3/FLAG9f5128c36 [2025-02-06 12:10:57,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52a78d560/5ae5e2b25c81453fbf597430d6f583f3 [2025-02-06 12:10:57,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:10:57,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:10:57,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:10:57,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:10:57,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:10:57,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:57,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3873a59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57, skipping insertion in model container [2025-02-06 12:10:57,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:57,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:10:57,580 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 12:10:57,599 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 12:10:57,602 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 12:10:57,605 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 12:10:57,610 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 12:10:57,632 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 12:10:57,633 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 12:10:57,634 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 12:10:57,635 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 12:10:57,636 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 12:10:57,637 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 12:10:57,638 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 12:10:57,639 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 12:10:57,642 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 12:10:57,642 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 12:10:57,644 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 12:10:57,645 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 12:10:57,646 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 12:10:57,646 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 12:10:57,649 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 12:10:57,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:10:57,667 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:10:57,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:10:57,691 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 12:10:57,703 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 12:10:57,705 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 12:10:57,707 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 12:10:57,710 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 12:10:57,726 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 12:10:57,726 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 12:10:57,728 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 12:10:57,728 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 12:10:57,729 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 12:10:57,730 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 12:10:57,730 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 12:10:57,731 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 12:10:57,733 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 12:10:57,734 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 12:10:57,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:10:57,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:10:57,736 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 12:10:57,736 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 12:10:57,738 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 12:10:57,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:10:57,743 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:10:57,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:10:57,870 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:10:57,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57 WrapperNode [2025-02-06 12:10:57,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:10:57,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:10:57,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:10:57,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:10:57,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:57,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:57,958 INFO L138 Inliner]: procedures = 179, calls = 323, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1152 [2025-02-06 12:10:57,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:10:57,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:10:57,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:10:57,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:10:57,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:57,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,074 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 34, 265]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2025-02-06 12:10:58,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,118 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:10:58,147 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:10:58,148 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:10:58,148 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:10:58,149 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (1/1) ... [2025-02-06 12:10:58,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:10:58,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:10:58,173 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 12:10:58,183 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 12:10:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-02-06 12:10:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-02-06 12:10:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 12:10:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:10:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:10:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:10:58,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:10:58,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:10:58,383 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:10:58,386 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:11:00,855 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: 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 12:11:00,946 INFO L? ?]: Removed 1292 outVars from TransFormulas that were not future-live. [2025-02-06 12:11:00,946 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:11:00,964 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:11:00,964 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:11:00,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:11:00 BoogieIcfgContainer [2025-02-06 12:11:00,965 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:11:00,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:11:00,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:11:00,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:11:00,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:10:57" (1/3) ... [2025-02-06 12:11:00,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a0da51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:11:00, skipping insertion in model container [2025-02-06 12:11:00,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:10:57" (2/3) ... [2025-02-06 12:11:00,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a0da51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:11:00, skipping insertion in model container [2025-02-06 12:11:00,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:11:00" (3/3) ... [2025-02-06 12:11:00,971 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2025-02-06 12:11:00,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:11:00,980 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test7-2.i that has 5 procedures, 1275 locations, 1 initial locations, 43 loop locations, and 628 error locations. [2025-02-06 12:11:01,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:11:01,035 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;@1845e101, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:11:01,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-02-06 12:11:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265 states, 632 states have (on average 2.2056962025316458) internal successors, (1394), 1258 states have internal predecessors, (1394), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 12:11:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:11:01,051 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:01,052 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:11:01,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:01,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1430880, now seen corresponding path program 1 times [2025-02-06 12:11:01,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50849335] [2025-02-06 12:11:01,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:01,071 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 12:11:01,072 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 12:11:01,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:11:01,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:11:01,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:01,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:01,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:01,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:01,217 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 12:11:01,233 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 12:11:01,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:01,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50849335] [2025-02-06 12:11:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50849335] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:01,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:01,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:11:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828038925] [2025-02-06 12:11:01,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:01,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:11:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:01,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:11:01,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:11:01,254 INFO L87 Difference]: Start difference. First operand has 1265 states, 632 states have (on average 2.2056962025316458) internal successors, (1394), 1258 states have internal predecessors, (1394), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 12:11:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:02,609 INFO L93 Difference]: Finished difference Result 1437 states and 1513 transitions. [2025-02-06 12:11:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:11:02,611 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 12:11:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:02,621 INFO L225 Difference]: With dead ends: 1437 [2025-02-06 12:11:02,621 INFO L226 Difference]: Without dead ends: 1435 [2025-02-06 12:11:02,622 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 12:11:02,624 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 1163 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:02,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 921 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 12:11:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2025-02-06 12:11:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1246. [2025-02-06 12:11:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 632 states have (on average 2.064873417721519) internal successors, (1305), 1240 states have internal predecessors, (1305), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1313 transitions. [2025-02-06 12:11:02,683 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1313 transitions. Word has length 3 [2025-02-06 12:11:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:02,683 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1313 transitions. [2025-02-06 12:11:02,683 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 12:11:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1313 transitions. [2025-02-06 12:11:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-06 12:11:02,684 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:02,684 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-06 12:11:02,698 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 12:11:02,884 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 12:11:02,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:02,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1430881, now seen corresponding path program 1 times [2025-02-06 12:11:02,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975328385] [2025-02-06 12:11:02,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:02,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:02,888 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 12:11:02,889 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 12:11:02,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:11:02,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:11:02,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:02,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:02,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:11:02,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:02,981 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 12:11:02,996 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 12:11:02,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:02,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975328385] [2025-02-06 12:11:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975328385] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:11:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111199124] [2025-02-06 12:11:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:02,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:11:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:02,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:11:02,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:11:02,997 INFO L87 Difference]: Start difference. First operand 1246 states and 1313 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 12:11:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:05,077 INFO L93 Difference]: Finished difference Result 1852 states and 1962 transitions. [2025-02-06 12:11:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:11:05,077 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 12:11:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:05,082 INFO L225 Difference]: With dead ends: 1852 [2025-02-06 12:11:05,082 INFO L226 Difference]: Without dead ends: 1852 [2025-02-06 12:11:05,083 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 12:11:05,083 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 646 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:05,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1716 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:11:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2025-02-06 12:11:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1463. [2025-02-06 12:11:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 850 states have (on average 2.0423529411764707) internal successors, (1736), 1457 states have internal predecessors, (1736), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1744 transitions. [2025-02-06 12:11:05,106 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1744 transitions. Word has length 3 [2025-02-06 12:11:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:05,106 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 1744 transitions. [2025-02-06 12:11:05,106 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 12:11:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1744 transitions. [2025-02-06 12:11:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 12:11:05,106 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:05,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:05,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:05,311 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 12:11:05,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:05,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash 793589531, now seen corresponding path program 1 times [2025-02-06 12:11:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:05,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693250148] [2025-02-06 12:11:05,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:05,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:05,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:05,314 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 12:11:05,316 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 12:11:05,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:11:05,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:11:05,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:05,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:05,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:11:05,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:05,425 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 12:11:05,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:11:05,476 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 12:11:05,490 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:11:05,491 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 12:11:05,500 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 12:11:05,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:05,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693250148] [2025-02-06 12:11:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693250148] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:05,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:05,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007453399] [2025-02-06 12:11:05,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:05,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:05,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:05,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:05,502 INFO L87 Difference]: Start difference. First operand 1463 states and 1744 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 12:11:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:07,674 INFO L93 Difference]: Finished difference Result 1646 states and 1938 transitions. [2025-02-06 12:11:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:07,675 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 12:11:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:07,678 INFO L225 Difference]: With dead ends: 1646 [2025-02-06 12:11:07,678 INFO L226 Difference]: Without dead ends: 1646 [2025-02-06 12:11:07,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 12:11:07,679 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 2612 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2615 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:07,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2615 Valid, 536 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-06 12:11:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2025-02-06 12:11:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1234. [2025-02-06 12:11:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 632 states have (on average 2.0443037974683542) internal successors, (1292), 1228 states have internal predecessors, (1292), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1300 transitions. [2025-02-06 12:11:07,696 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1300 transitions. Word has length 8 [2025-02-06 12:11:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:07,696 INFO L471 AbstractCegarLoop]: Abstraction has 1234 states and 1300 transitions. [2025-02-06 12:11:07,696 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 12:11:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1300 transitions. [2025-02-06 12:11:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:11:07,697 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:07,697 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:07,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:07,897 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 12:11:07,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:07,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1168526985, now seen corresponding path program 1 times [2025-02-06 12:11:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273263004] [2025-02-06 12:11:07,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:07,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:07,903 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 12:11:07,904 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 12:11:08,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:11:08,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:11:08,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:08,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:08,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:11:08,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:08,022 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 12:11:08,035 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 12:11:08,036 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:08,036 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273263004] [2025-02-06 12:11:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273263004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:11:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816202425] [2025-02-06 12:11:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:08,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:11:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:08,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:11:08,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:11:08,037 INFO L87 Difference]: Start difference. First operand 1234 states and 1300 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 12:11:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:09,708 INFO L93 Difference]: Finished difference Result 1716 states and 1819 transitions. [2025-02-06 12:11:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:11:09,708 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 12:11:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:09,712 INFO L225 Difference]: With dead ends: 1716 [2025-02-06 12:11:09,712 INFO L226 Difference]: Without dead ends: 1716 [2025-02-06 12:11:09,712 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 12:11:09,713 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 703 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:09,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1932 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 12:11:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2025-02-06 12:11:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1263. [2025-02-06 12:11:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 671 states have (on average 2.029806259314456) internal successors, (1362), 1257 states have internal predecessors, (1362), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1370 transitions. [2025-02-06 12:11:09,729 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1370 transitions. Word has length 9 [2025-02-06 12:11:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:09,729 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1370 transitions. [2025-02-06 12:11:09,729 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 12:11:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1370 transitions. [2025-02-06 12:11:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 12:11:09,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:09,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:09,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:09,930 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 12:11:09,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr619REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:09,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1168526986, now seen corresponding path program 1 times [2025-02-06 12:11:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:09,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136403880] [2025-02-06 12:11:09,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:09,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:09,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:09,934 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 12:11:09,935 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 12:11:10,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:11:10,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:11:10,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:10,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:10,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:10,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:10,055 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 12:11:10,061 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 12:11:10,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:10,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136403880] [2025-02-06 12:11:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136403880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:10,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:11:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407869171] [2025-02-06 12:11:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:10,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:11:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:10,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:11:10,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:11:10,063 INFO L87 Difference]: Start difference. First operand 1263 states and 1370 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 12:11:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:11,162 INFO L93 Difference]: Finished difference Result 1606 states and 1739 transitions. [2025-02-06 12:11:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:11:11,163 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 12:11:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:11,170 INFO L225 Difference]: With dead ends: 1606 [2025-02-06 12:11:11,173 INFO L226 Difference]: Without dead ends: 1606 [2025-02-06 12:11:11,174 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 12:11:11,174 INFO L435 NwaCegarLoop]: 1171 mSDtfsCounter, 937 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:11,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1529 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 12:11:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2025-02-06 12:11:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1216. [2025-02-06 12:11:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 671 states have (on average 1.9538002980625933) internal successors, (1311), 1210 states have internal predecessors, (1311), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1319 transitions. [2025-02-06 12:11:11,188 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1319 transitions. Word has length 9 [2025-02-06 12:11:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:11,189 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1319 transitions. [2025-02-06 12:11:11,189 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 12:11:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1319 transitions. [2025-02-06 12:11:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 12:11:11,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:11,189 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:11,196 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 12:11:11,394 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 12:11:11,394 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:11,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1270714447, now seen corresponding path program 1 times [2025-02-06 12:11:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007615442] [2025-02-06 12:11:11,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:11,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:11,397 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 12:11:11,398 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 12:11:11,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:11:11,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:11:11,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:11,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:11,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:11,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:11,575 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 12:11:11,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:11,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007615442] [2025-02-06 12:11:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007615442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:11,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468538373] [2025-02-06 12:11:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:11,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:11:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:11,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:11:11,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:11:11,579 INFO L87 Difference]: Start difference. First operand 1216 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:11,798 INFO L93 Difference]: Finished difference Result 1820 states and 2008 transitions. [2025-02-06 12:11:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:11:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 12:11:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:11,804 INFO L225 Difference]: With dead ends: 1820 [2025-02-06 12:11:11,805 INFO L226 Difference]: Without dead ends: 1820 [2025-02-06 12:11:11,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 12:11:11,806 INFO L435 NwaCegarLoop]: 1378 mSDtfsCounter, 633 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:11,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 2496 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:11:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-02-06 12:11:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1466. [2025-02-06 12:11:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 921 states have (on average 1.9294245385450597) internal successors, (1777), 1460 states have internal predecessors, (1777), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1785 transitions. [2025-02-06 12:11:11,826 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1785 transitions. Word has length 14 [2025-02-06 12:11:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:11,826 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 1785 transitions. [2025-02-06 12:11:11,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1785 transitions. [2025-02-06 12:11:11,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:11:11,827 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:11,827 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:11,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:12,031 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 12:11:12,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:12,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 738736971, now seen corresponding path program 1 times [2025-02-06 12:11:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743270377] [2025-02-06 12:11:12,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:12,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:12,037 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 12:11:12,040 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 12:11:12,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:11:12,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:11:12,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:12,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:12,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:11:12,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:12,235 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 12:11:12,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:12,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743270377] [2025-02-06 12:11:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743270377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:12,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:12,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380779039] [2025-02-06 12:11:12,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:12,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:12,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:12,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:12,236 INFO L87 Difference]: Start difference. First operand 1466 states and 1785 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:12,731 INFO L93 Difference]: Finished difference Result 1821 states and 2008 transitions. [2025-02-06 12:11:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-06 12:11:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:12,735 INFO L225 Difference]: With dead ends: 1821 [2025-02-06 12:11:12,735 INFO L226 Difference]: Without dead ends: 1821 [2025-02-06 12:11:12,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 12:11:12,736 INFO L435 NwaCegarLoop]: 1377 mSDtfsCounter, 638 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:12,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3766 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:11:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2025-02-06 12:11:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1468. [2025-02-06 12:11:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 923 states have (on average 1.9263271939328277) internal successors, (1778), 1462 states have internal predecessors, (1778), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 1786 transitions. [2025-02-06 12:11:12,753 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 1786 transitions. Word has length 15 [2025-02-06 12:11:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:12,753 INFO L471 AbstractCegarLoop]: Abstraction has 1468 states and 1786 transitions. [2025-02-06 12:11:12,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 1786 transitions. [2025-02-06 12:11:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:11:12,754 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:12,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:12,761 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 12:11:12,955 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 12:11:12,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr295REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:12,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:12,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1145083657, now seen corresponding path program 1 times [2025-02-06 12:11:12,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:12,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414801532] [2025-02-06 12:11:12,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:12,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:12,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:12,961 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 12:11:12,962 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 12:11:13,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:11:13,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:11:13,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:13,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:13,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:11:13,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:13,072 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 12:11:13,118 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 12:11:13,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:13,118 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414801532] [2025-02-06 12:11:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414801532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600890343] [2025-02-06 12:11:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:13,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:13,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:13,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:13,120 INFO L87 Difference]: Start difference. First operand 1468 states and 1786 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 12:11:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:14,642 INFO L93 Difference]: Finished difference Result 1642 states and 1946 transitions. [2025-02-06 12:11:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2025-02-06 12:11:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:14,646 INFO L225 Difference]: With dead ends: 1642 [2025-02-06 12:11:14,646 INFO L226 Difference]: Without dead ends: 1642 [2025-02-06 12:11:14,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 12:11:14,647 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 1158 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:14,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1477 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 12:11:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2025-02-06 12:11:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1445. [2025-02-06 12:11:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 923 states have (on average 1.876489707475623) internal successors, (1732), 1439 states have internal predecessors, (1732), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1740 transitions. [2025-02-06 12:11:14,663 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1740 transitions. Word has length 15 [2025-02-06 12:11:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:14,663 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 1740 transitions. [2025-02-06 12:11:14,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 12:11:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1740 transitions. [2025-02-06 12:11:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 12:11:14,664 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:14,664 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:14,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:14,864 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 12:11:14,865 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr296REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:14,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1145083658, now seen corresponding path program 1 times [2025-02-06 12:11:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337237648] [2025-02-06 12:11:14,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:14,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:14,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:14,867 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 12:11:14,869 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 12:11:14,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:11:14,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:11:14,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:14,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:14,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:11:14,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:14,993 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 12:11:15,088 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 12:11:15,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:15,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337237648] [2025-02-06 12:11:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337237648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:15,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:15,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475464796] [2025-02-06 12:11:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:15,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:15,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:15,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:15,091 INFO L87 Difference]: Start difference. First operand 1445 states and 1740 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 12:11:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:17,216 INFO L93 Difference]: Finished difference Result 2144 states and 2583 transitions. [2025-02-06 12:11:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2025-02-06 12:11:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:17,220 INFO L225 Difference]: With dead ends: 2144 [2025-02-06 12:11:17,220 INFO L226 Difference]: Without dead ends: 2144 [2025-02-06 12:11:17,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 12:11:17,221 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 622 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:17,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2209 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-06 12:11:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2025-02-06 12:11:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1767. [2025-02-06 12:11:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1245 states have (on average 1.872289156626506) internal successors, (2331), 1761 states have internal predecessors, (2331), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2339 transitions. [2025-02-06 12:11:17,238 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2339 transitions. Word has length 15 [2025-02-06 12:11:17,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:17,238 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2339 transitions. [2025-02-06 12:11:17,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 12:11:17,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2339 transitions. [2025-02-06 12:11:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:11:17,239 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:17,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:17,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:17,443 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 12:11:17,443 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr272REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:17,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1137811015, now seen corresponding path program 1 times [2025-02-06 12:11:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396835280] [2025-02-06 12:11:17,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:17,446 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 12:11:17,447 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 12:11:17,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:11:17,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:11:17,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:17,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:17,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:17,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:17,583 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 12:11:17,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:17,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396835280] [2025-02-06 12:11:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396835280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:17,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177443862] [2025-02-06 12:11:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:17,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:17,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:17,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:17,585 INFO L87 Difference]: Start difference. First operand 1767 states and 2339 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 12:11:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:17,631 INFO L93 Difference]: Finished difference Result 1695 states and 2216 transitions. [2025-02-06 12:11:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:11:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2025-02-06 12:11:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:17,635 INFO L225 Difference]: With dead ends: 1695 [2025-02-06 12:11:17,635 INFO L226 Difference]: Without dead ends: 1695 [2025-02-06 12:11:17,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 12:11:17,636 INFO L435 NwaCegarLoop]: 1132 mSDtfsCounter, 45 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:17,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3373 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:11:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2025-02-06 12:11:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2025-02-06 12:11:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1192 states have (on average 1.8523489932885906) internal successors, (2208), 1689 states have internal predecessors, (2208), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2216 transitions. [2025-02-06 12:11:17,651 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2216 transitions. Word has length 16 [2025-02-06 12:11:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:17,651 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2216 transitions. [2025-02-06 12:11:17,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 12:11:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2216 transitions. [2025-02-06 12:11:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 12:11:17,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:17,651 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:17,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 12:11:17,852 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 12:11:17,852 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:17,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:17,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1385839594, now seen corresponding path program 1 times [2025-02-06 12:11:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304934659] [2025-02-06 12:11:17,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:17,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:17,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:17,855 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 12:11:17,857 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 12:11:17,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:11:17,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:11:17,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:17,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:17,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:11:17,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:17,966 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:11:17,966 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:11:17,968 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 33 treesize of output 31 [2025-02-06 12:11:17,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:11:17,995 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 62 treesize of output 22 [2025-02-06 12:11:18,008 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 12:11:18,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:18,008 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304934659] [2025-02-06 12:11:18,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304934659] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:18,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:18,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380159932] [2025-02-06 12:11:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:18,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:18,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:18,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:18,009 INFO L87 Difference]: Start difference. First operand 1695 states and 2216 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 12:11:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:18,214 INFO L93 Difference]: Finished difference Result 2420 states and 2778 transitions. [2025-02-06 12:11:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:18,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2025-02-06 12:11:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:18,220 INFO L225 Difference]: With dead ends: 2420 [2025-02-06 12:11:18,220 INFO L226 Difference]: Without dead ends: 2420 [2025-02-06 12:11:18,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 12:11:18,221 INFO L435 NwaCegarLoop]: 1350 mSDtfsCounter, 1084 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:18,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 3824 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:11:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2025-02-06 12:11:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1373. [2025-02-06 12:11:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 870 states have (on average 1.8666666666666667) internal successors, (1624), 1367 states have internal predecessors, (1624), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1632 transitions. [2025-02-06 12:11:18,237 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1632 transitions. Word has length 16 [2025-02-06 12:11:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:18,237 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1632 transitions. [2025-02-06 12:11:18,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 12:11:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1632 transitions. [2025-02-06 12:11:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:11:18,238 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:18,238 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:18,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:18,443 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 12:11:18,443 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr611REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:18,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1841308631, now seen corresponding path program 1 times [2025-02-06 12:11:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:18,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117547617] [2025-02-06 12:11:18,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:18,446 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 12:11:18,450 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 12:11:18,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:11:18,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:11:18,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:18,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:18,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:11:18,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:18,579 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 12:11:18,605 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 12:11:18,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:18,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117547617] [2025-02-06 12:11:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117547617] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570934764] [2025-02-06 12:11:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:18,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:18,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:18,606 INFO L87 Difference]: Start difference. First operand 1373 states and 1632 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:11:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:20,075 INFO L93 Difference]: Finished difference Result 1755 states and 2108 transitions. [2025-02-06 12:11:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2025-02-06 12:11:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:20,079 INFO L225 Difference]: With dead ends: 1755 [2025-02-06 12:11:20,079 INFO L226 Difference]: Without dead ends: 1755 [2025-02-06 12:11:20,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 12:11:20,080 INFO L435 NwaCegarLoop]: 698 mSDtfsCounter, 901 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:20,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1534 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:11:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2025-02-06 12:11:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1350. [2025-02-06 12:11:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 870 states have (on average 1.813793103448276) internal successors, (1578), 1344 states have internal predecessors, (1578), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1586 transitions. [2025-02-06 12:11:20,108 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1586 transitions. Word has length 19 [2025-02-06 12:11:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:20,109 INFO L471 AbstractCegarLoop]: Abstraction has 1350 states and 1586 transitions. [2025-02-06 12:11:20,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:11:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1586 transitions. [2025-02-06 12:11:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 12:11:20,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:20,109 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:20,120 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 12:11:20,309 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 12:11:20,310 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:20,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1841308630, now seen corresponding path program 1 times [2025-02-06 12:11:20,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:20,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589442263] [2025-02-06 12:11:20,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:20,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:20,315 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 12:11:20,316 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 12:11:20,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:11:20,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:11:20,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:20,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:20,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:11:20,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:20,447 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 12:11:20,518 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 12:11:20,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:20,519 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:20,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589442263] [2025-02-06 12:11:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589442263] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:11:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092654716] [2025-02-06 12:11:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:20,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:20,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:20,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:20,520 INFO L87 Difference]: Start difference. First operand 1350 states and 1586 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:11:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:22,784 INFO L93 Difference]: Finished difference Result 1999 states and 2353 transitions. [2025-02-06 12:11:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2025-02-06 12:11:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:22,790 INFO L225 Difference]: With dead ends: 1999 [2025-02-06 12:11:22,790 INFO L226 Difference]: Without dead ends: 1999 [2025-02-06 12:11:22,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 12:11:22,791 INFO L435 NwaCegarLoop]: 1304 mSDtfsCounter, 740 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:22,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2636 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 12:11:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2025-02-06 12:11:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1464. [2025-02-06 12:11:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 984 states have (on average 1.7439024390243902) internal successors, (1716), 1458 states have internal predecessors, (1716), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1724 transitions. [2025-02-06 12:11:22,833 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1724 transitions. Word has length 19 [2025-02-06 12:11:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:22,833 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1724 transitions. [2025-02-06 12:11:22,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:11:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1724 transitions. [2025-02-06 12:11:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 12:11:22,834 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:22,834 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] [2025-02-06 12:11:22,845 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 12:11:23,038 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 12:11:23,038 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:23,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash 27660153, now seen corresponding path program 1 times [2025-02-06 12:11:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037688980] [2025-02-06 12:11:23,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:23,047 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 12:11:23,049 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 12:11:23,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 12:11:23,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 12:11:23,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:23,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:23,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:11:23,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:23,252 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 12:11:23,532 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 12:11:23,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:11:23,969 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 12:11:23,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037688980] [2025-02-06 12:11:23,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037688980] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:11:23,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:11:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:11:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400465789] [2025-02-06 12:11:23,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:11:23,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:11:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:23,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:11:23,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:11:23,970 INFO L87 Difference]: Start difference. First operand 1464 states and 1724 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:29,947 INFO L93 Difference]: Finished difference Result 2355 states and 2843 transitions. [2025-02-06 12:11:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:11:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-06 12:11:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:29,955 INFO L225 Difference]: With dead ends: 2355 [2025-02-06 12:11:29,955 INFO L226 Difference]: Without dead ends: 2355 [2025-02-06 12:11:29,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:11:29,956 INFO L435 NwaCegarLoop]: 1331 mSDtfsCounter, 2289 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:29,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 3599 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-02-06 12:11:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2025-02-06 12:11:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1628. [2025-02-06 12:11:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1148 states have (on average 1.6968641114982579) internal successors, (1948), 1622 states have internal predecessors, (1948), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 1956 transitions. [2025-02-06 12:11:29,989 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 1956 transitions. Word has length 38 [2025-02-06 12:11:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:29,989 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 1956 transitions. [2025-02-06 12:11:29,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 1956 transitions. [2025-02-06 12:11:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 12:11:29,992 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:29,996 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] [2025-02-06 12:11:30,009 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 12:11:30,197 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 12:11:30,197 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:30,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1459566772, now seen corresponding path program 1 times [2025-02-06 12:11:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880881089] [2025-02-06 12:11:30,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:30,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:30,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:30,201 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 12:11:30,202 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 12:11:30,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 12:11:30,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 12:11:30,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:30,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:30,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:30,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:30,487 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 12:11:30,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:30,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:30,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880881089] [2025-02-06 12:11:30,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880881089] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:30,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:30,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612872533] [2025-02-06 12:11:30,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:30,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:30,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:30,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:30,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:30,489 INFO L87 Difference]: Start difference. First operand 1628 states and 1956 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:30,555 INFO L93 Difference]: Finished difference Result 1317 states and 1520 transitions. [2025-02-06 12:11:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:11:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-02-06 12:11:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:30,558 INFO L225 Difference]: With dead ends: 1317 [2025-02-06 12:11:30,558 INFO L226 Difference]: Without dead ends: 1317 [2025-02-06 12:11:30,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 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 12:11:30,560 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 56 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3134 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 12:11:30,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3134 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:11:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2025-02-06 12:11:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1315. [2025-02-06 12:11:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 858 states have (on average 1.75990675990676) internal successors, (1510), 1309 states have internal predecessors, (1510), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1518 transitions. [2025-02-06 12:11:30,571 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1518 transitions. Word has length 54 [2025-02-06 12:11:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:30,572 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 1518 transitions. [2025-02-06 12:11:30,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1518 transitions. [2025-02-06 12:11:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 12:11:30,572 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:30,572 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] [2025-02-06 12:11:30,582 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 12:11:30,777 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 12:11:30,778 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:30,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 405134588, now seen corresponding path program 1 times [2025-02-06 12:11:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336308965] [2025-02-06 12:11:30,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:30,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:30,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:30,781 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 12:11:30,782 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 12:11:30,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 12:11:30,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 12:11:30,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:30,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:30,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:11:30,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:30,986 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 12:11:31,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:11:31,278 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 12:11:31,288 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:11:31,288 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 12:11:31,291 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 12:11:31,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:31,291 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336308965] [2025-02-06 12:11:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336308965] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:31,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:31,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182506392] [2025-02-06 12:11:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:31,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:11:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:31,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:11:31,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:11:31,293 INFO L87 Difference]: Start difference. First operand 1315 states and 1518 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:11:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:33,462 INFO L93 Difference]: Finished difference Result 1674 states and 1994 transitions. [2025-02-06 12:11:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:11:33,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-06 12:11:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:33,468 INFO L225 Difference]: With dead ends: 1674 [2025-02-06 12:11:33,469 INFO L226 Difference]: Without dead ends: 1674 [2025-02-06 12:11:33,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:11:33,469 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 1141 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:33,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1214 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-06 12:11:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2025-02-06 12:11:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1238. [2025-02-06 12:11:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 819 states have (on average 1.7045177045177045) internal successors, (1396), 1232 states have internal predecessors, (1396), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1404 transitions. [2025-02-06 12:11:33,479 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1404 transitions. Word has length 62 [2025-02-06 12:11:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:33,480 INFO L471 AbstractCegarLoop]: Abstraction has 1238 states and 1404 transitions. [2025-02-06 12:11:33,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 12:11:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1404 transitions. [2025-02-06 12:11:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:11:33,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:33,481 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:33,492 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 12:11:33,686 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 12:11:33,686 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:33,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1908657516, now seen corresponding path program 1 times [2025-02-06 12:11:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819562377] [2025-02-06 12:11:33,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:33,690 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 12:11:33,691 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 12:11:33,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:11:33,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:11:33,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:33,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:33,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:11:33,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:33,896 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 12:11:33,911 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 12:11:33,935 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 12:11:33,942 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 12:11:33,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:33,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819562377] [2025-02-06 12:11:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819562377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:33,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:33,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966204806] [2025-02-06 12:11:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:33,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:11:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:33,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:11:33,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:11:33,944 INFO L87 Difference]: Start difference. First operand 1238 states and 1404 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:35,412 INFO L93 Difference]: Finished difference Result 1237 states and 1403 transitions. [2025-02-06 12:11:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:11:35,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 12:11:35,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:35,414 INFO L225 Difference]: With dead ends: 1237 [2025-02-06 12:11:35,414 INFO L226 Difference]: Without dead ends: 1237 [2025-02-06 12:11:35,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 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 12:11:35,415 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 2 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:35,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2701 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-06 12:11:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2025-02-06 12:11:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2025-02-06 12:11:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 819 states have (on average 1.7032967032967032) internal successors, (1395), 1231 states have internal predecessors, (1395), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1403 transitions. [2025-02-06 12:11:35,423 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1403 transitions. Word has length 67 [2025-02-06 12:11:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:35,423 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 1403 transitions. [2025-02-06 12:11:35,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1403 transitions. [2025-02-06 12:11:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 12:11:35,424 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:35,424 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:35,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 12:11:35,624 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 12:11:35,625 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:35,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1908657515, now seen corresponding path program 1 times [2025-02-06 12:11:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167609344] [2025-02-06 12:11:35,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:35,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:35,628 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 12:11:35,636 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 12:11:35,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:11:35,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:11:35,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:35,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:35,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:11:35,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:35,846 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 12:11:35,859 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 12:11:35,862 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 12:11:35,892 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 12:11:35,904 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 12:11:35,904 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:35,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167609344] [2025-02-06 12:11:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167609344] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:35,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563041240] [2025-02-06 12:11:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:35,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:11:35,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:35,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:11:35,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:11:35,907 INFO L87 Difference]: Start difference. First operand 1237 states and 1403 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:37,875 INFO L93 Difference]: Finished difference Result 1236 states and 1402 transitions. [2025-02-06 12:11:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:11:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 12:11:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:37,878 INFO L225 Difference]: With dead ends: 1236 [2025-02-06 12:11:37,878 INFO L226 Difference]: Without dead ends: 1236 [2025-02-06 12:11:37,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 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 12:11:37,879 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 1 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:37,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2742 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:11:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2025-02-06 12:11:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2025-02-06 12:11:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 818 states have (on average 1.7041564792176038) internal successors, (1394), 1230 states have internal predecessors, (1394), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 12:11:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1402 transitions. [2025-02-06 12:11:37,894 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1402 transitions. Word has length 67 [2025-02-06 12:11:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:37,894 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 1402 transitions. [2025-02-06 12:11:37,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:11:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1402 transitions. [2025-02-06 12:11:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:11:37,894 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:37,895 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, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:37,904 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 12:11:38,099 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 12:11:38,099 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:38,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1051730639, now seen corresponding path program 1 times [2025-02-06 12:11:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:38,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086508173] [2025-02-06 12:11:38,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:38,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:38,102 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 12:11:38,103 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 12:11:38,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:11:38,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:11:38,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:38,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:38,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:11:38,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:38,305 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 12:11:38,366 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 12:11:38,376 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 12:11:38,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:38,376 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086508173] [2025-02-06 12:11:38,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086508173] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:38,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:11:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175444917] [2025-02-06 12:11:38,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:38,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:11:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:38,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:11:38,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:11:38,378 INFO L87 Difference]: Start difference. First operand 1236 states and 1402 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:11:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:40,189 INFO L93 Difference]: Finished difference Result 1248 states and 1417 transitions. [2025-02-06 12:11:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:11:40,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:11:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:40,192 INFO L225 Difference]: With dead ends: 1248 [2025-02-06 12:11:40,192 INFO L226 Difference]: Without dead ends: 1248 [2025-02-06 12:11:40,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:11:40,196 INFO L435 NwaCegarLoop]: 1031 mSDtfsCounter, 8 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:40,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3790 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:11:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2025-02-06 12:11:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1242. [2025-02-06 12:11:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 823 states have (on average 1.7023086269744836) internal successors, (1401), 1235 states have internal predecessors, (1401), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 12:11:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1412 transitions. [2025-02-06 12:11:40,221 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1412 transitions. Word has length 75 [2025-02-06 12:11:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:40,221 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1412 transitions. [2025-02-06 12:11:40,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:11:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1412 transitions. [2025-02-06 12:11:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 12:11:40,226 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:40,226 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, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:40,238 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 12:11:40,426 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 12:11:40,427 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:40,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1051730638, now seen corresponding path program 1 times [2025-02-06 12:11:40,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:40,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787810002] [2025-02-06 12:11:40,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:40,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:40,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:40,431 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 12:11:40,431 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 12:11:40,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 12:11:40,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 12:11:40,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:40,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:40,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:11:40,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:40,668 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 12:11:40,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:11:40,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787810002] [2025-02-06 12:11:40,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787810002] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:11:40,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:11:40,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:11:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987962975] [2025-02-06 12:11:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:11:40,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:11:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:40,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:11:40,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:11:40,670 INFO L87 Difference]: Start difference. First operand 1242 states and 1412 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:11:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:40,698 INFO L93 Difference]: Finished difference Result 1239 states and 1406 transitions. [2025-02-06 12:11:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:11:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2025-02-06 12:11:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:40,702 INFO L225 Difference]: With dead ends: 1239 [2025-02-06 12:11:40,702 INFO L226 Difference]: Without dead ends: 1239 [2025-02-06 12:11:40,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 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 12:11:40,703 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 0 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:40,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3118 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:11:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2025-02-06 12:11:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2025-02-06 12:11:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 820 states have (on average 1.7036585365853658) internal successors, (1397), 1233 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:11:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1406 transitions. [2025-02-06 12:11:40,721 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1406 transitions. Word has length 75 [2025-02-06 12:11:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:40,721 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1406 transitions. [2025-02-06 12:11:40,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 12:11:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1406 transitions. [2025-02-06 12:11:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 12:11:40,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:40,722 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:40,733 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 12:11:40,922 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 12:11:40,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:40,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -505133616, now seen corresponding path program 1 times [2025-02-06 12:11:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432014061] [2025-02-06 12:11:40,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:11:40,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:40,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:40,925 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 12:11:40,927 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 12:11:41,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 12:11:41,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 12:11:41,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:11:41,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:41,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:11:41,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:11:41,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:11:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:11:41,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432014061] [2025-02-06 12:11:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432014061] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:11:41,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:11:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:11:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753451260] [2025-02-06 12:11:41,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:11:41,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:11:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:11:41,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:11:41,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:11:41,195 INFO L87 Difference]: Start difference. First operand 1239 states and 1406 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:11:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:11:41,318 INFO L93 Difference]: Finished difference Result 1251 states and 1423 transitions. [2025-02-06 12:11:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:11:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2025-02-06 12:11:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:11:41,320 INFO L225 Difference]: With dead ends: 1251 [2025-02-06 12:11:41,320 INFO L226 Difference]: Without dead ends: 1251 [2025-02-06 12:11:41,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:11:41,321 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 8 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:11:41,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3120 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:11:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2025-02-06 12:11:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2025-02-06 12:11:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 829 states have (on average 1.7032569360675514) internal successors, (1412), 1242 states have internal predecessors, (1412), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:11:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1421 transitions. [2025-02-06 12:11:41,332 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1421 transitions. Word has length 76 [2025-02-06 12:11:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:11:41,332 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1421 transitions. [2025-02-06 12:11:41,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:11:41,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1421 transitions. [2025-02-06 12:11:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 12:11:41,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:11:41,333 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:11:41,346 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 12:11:41,533 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 12:11:41,534 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:11:41,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:11:41,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2004126961, now seen corresponding path program 2 times [2025-02-06 12:11:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:11:41,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720922606] [2025-02-06 12:11:41,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:11:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:11:41,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:11:41,537 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 12:11:41,538 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 12:11:41,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-06 12:11:58,808 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 12:11:58,809 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:11:58,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:11:58,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 12:11:58,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:11:58,884 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:11:58,885 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 12:11:58,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:11:59,047 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:11:59,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-06 12:11:59,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-06 12:11:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:11:59,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:11:59,165 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:11:59,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-06 12:11:59,171 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1297 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem34#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_1297) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-02-06 12:11:59,173 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:11:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720922606] [2025-02-06 12:11:59,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720922606] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:11:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1239898685] [2025-02-06 12:11:59,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:11:59,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:11:59,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:11:59,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:11:59,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-02-06 12:11:59,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-06 12:12:00,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 12:12:00,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:12:00,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:12:00,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:12:00,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:12:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:00,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:12:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1239898685] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:12:00,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:12:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-02-06 12:12:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228478296] [2025-02-06 12:12:00,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:12:00,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 12:12:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:12:00,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 12:12:00,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-02-06 12:12:00,461 INFO L87 Difference]: Start difference. First operand 1249 states and 1421 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:12:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:12:07,385 INFO L93 Difference]: Finished difference Result 1662 states and 1958 transitions. [2025-02-06 12:12:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 12:12:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2025-02-06 12:12:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:12:07,388 INFO L225 Difference]: With dead ends: 1662 [2025-02-06 12:12:07,388 INFO L226 Difference]: Without dead ends: 1658 [2025-02-06 12:12:07,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-02-06 12:12:07,390 INFO L435 NwaCegarLoop]: 678 mSDtfsCounter, 812 mSDsluCounter, 9957 mSDsCounter, 0 mSdLazyCounter, 7025 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 10635 SdHoareTripleChecker+Invalid, 7056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:12:07,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 10635 Invalid, 7056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 7025 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-02-06 12:12:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2025-02-06 12:12:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1257. [2025-02-06 12:12:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 838 states have (on average 1.698090692124105) internal successors, (1423), 1250 states have internal predecessors, (1423), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:12:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1432 transitions. [2025-02-06 12:12:07,400 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1432 transitions. Word has length 79 [2025-02-06 12:12:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:12:07,400 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1432 transitions. [2025-02-06 12:12:07,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:12:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1432 transitions. [2025-02-06 12:12:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-06 12:12:07,401 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:12:07,401 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:12:07,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 12:12:07,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2025-02-06 12:12:07,806 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,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-06 12:12:07,806 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:12:07,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:12:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash 770085010, now seen corresponding path program 1 times [2025-02-06 12:12:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:12:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509976522] [2025-02-06 12:12:07,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:12:07,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:12:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:12:07,809 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 12:12:07,810 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 12:12:07,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-06 12:12:08,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-06 12:12:08,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:12:08,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:12:08,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:12:08,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:12:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:08,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:12:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:08,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:12:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509976522] [2025-02-06 12:12:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509976522] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:12:08,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:12:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:12:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233460465] [2025-02-06 12:12:08,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:12:08,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:12:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:12:08,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:12:08,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:12:08,570 INFO L87 Difference]: Start difference. First operand 1257 states and 1432 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:12:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:12:09,721 INFO L93 Difference]: Finished difference Result 1281 states and 1471 transitions. [2025-02-06 12:12:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:12:09,725 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-02-06 12:12:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:12:09,730 INFO L225 Difference]: With dead ends: 1281 [2025-02-06 12:12:09,730 INFO L226 Difference]: Without dead ends: 1275 [2025-02-06 12:12:09,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:12:09,732 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 26 mSDsluCounter, 11420 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12461 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 12:12:09,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12461 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 12:12:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2025-02-06 12:12:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1275. [2025-02-06 12:12:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 856 states have (on average 1.689252336448598) internal successors, (1446), 1268 states have internal predecessors, (1446), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 12:12:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1455 transitions. [2025-02-06 12:12:09,754 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1455 transitions. Word has length 85 [2025-02-06 12:12:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:12:09,755 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1455 transitions. [2025-02-06 12:12:09,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:12:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1455 transitions. [2025-02-06 12:12:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-06 12:12:09,755 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:12:09,755 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:12:09,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-06 12:12:09,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:12:09,956 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-02-06 12:12:09,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:12:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1076301870, now seen corresponding path program 2 times [2025-02-06 12:12:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:12:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349170611] [2025-02-06 12:12:09,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:12:09,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:12:09,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:12:09,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:12:09,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 12:12:10,148 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 12:12:27,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 12:12:27,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:12:27,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:12:27,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-06 12:12:27,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:12:27,924 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:12:27,925 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 12:12:27,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 12:12:27,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:12:27,954 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 12:12:28,057 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 22 treesize of output 10 [2025-02-06 12:12:28,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:12:28,396 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:12:28,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-02-06 12:12:28,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2025-02-06 12:12:28,427 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 31 treesize of output 13 [2025-02-06 12:12:28,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-02-06 12:12:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 12:12:28,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:12:28,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:12:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349170611] [2025-02-06 12:12:28,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349170611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:12:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [717590151] [2025-02-06 12:12:28,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:12:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:12:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:12:28,922 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:12:28,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-02-06 12:12:29,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 12:12:30,093 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 12:12:30,094 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:12:30,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:12:30,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 12:12:30,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:12:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:30,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:12:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:12:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [717590151] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:12:32,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:12:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-02-06 12:12:32,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511871139] [2025-02-06 12:12:32,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:12:32,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-06 12:12:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:12:32,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-06 12:12:32,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2956, Unknown=4, NotChecked=0, Total=3660 [2025-02-06 12:12:32,144 INFO L87 Difference]: Start difference. First operand 1275 states and 1455 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)