./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 12:09:59,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 12:09:59,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 12:09:59,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 12:09:59,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 12:09:59,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 12:09:59,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 12:09:59,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 12:09:59,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 12:09:59,194 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 12:09:59,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 12:09:59,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 12:09:59,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 12:09:59,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 12:09:59,195 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 12:09:59,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 12:09:59,195 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 12:09:59,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 12:09:59,196 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 12:09:59,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 12:09:59,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 12:09:59,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 12:09:59,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 12:09:59,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 12:09:59,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 12:09:59,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 12:09:59,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 12:09:59,198 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/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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2025-03-17 12:09:59,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 12:09:59,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 12:09:59,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 12:09:59,430 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 12:09:59,430 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 12:09:59,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-03-17 12:10:00,578 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31c940d9/e87ec94161f948fd821b7f13ea8041fa/FLAG644b75c28 [2025-03-17 12:10:00,882 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 12:10:00,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-03-17 12:10:00,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31c940d9/e87ec94161f948fd821b7f13ea8041fa/FLAG644b75c28 [2025-03-17 12:10:01,159 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31c940d9/e87ec94161f948fd821b7f13ea8041fa [2025-03-17 12:10:01,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 12:10:01,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 12:10:01,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 12:10:01,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 12:10:01,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 12:10:01,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:10:01" (1/1) ... [2025-03-17 12:10:01,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d6f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:01, skipping insertion in model container [2025-03-17 12:10:01,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:10:01" (1/1) ... [2025-03-17 12:10:01,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 12:10:01,440 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 12:10:01,442 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 12:10:01,442 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 12:10:01,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:10:01,479 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) [2025-03-17 12:10:01,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@129f31b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:01, skipping insertion in model container [2025-03-17 12:10:01,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 12:10:01,481 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 12:10:01,483 INFO L158 Benchmark]: Toolchain (without parser) took 319.32ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 107.4MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 12:10:01,483 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 201.3MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 12:10:01,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.31ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 107.4MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 12:10:01,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 201.3MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.31ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 107.4MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 12:10:03,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 12:10:03,437 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 12:10:03,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 12:10:03,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 12:10:03,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 12:10:03,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 12:10:03,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 12:10:03,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 12:10:03,469 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 12:10:03,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 12:10:03,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 12:10:03,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 12:10:03,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 12:10:03,470 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 12:10:03,471 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 12:10:03,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 12:10:03,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 12:10:03,471 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/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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2025-03-17 12:10:03,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 12:10:03,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 12:10:03,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 12:10:03,760 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 12:10:03,760 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 12:10:03,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-03-17 12:10:04,968 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce45f7450/801b4ce6eb994ae7b4ed3354a3294a64/FLAG5f71696f5 [2025-03-17 12:10:05,208 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 12:10:05,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2025-03-17 12:10:05,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce45f7450/801b4ce6eb994ae7b4ed3354a3294a64/FLAG5f71696f5 [2025-03-17 12:10:05,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce45f7450/801b4ce6eb994ae7b4ed3354a3294a64 [2025-03-17 12:10:05,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 12:10:05,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 12:10:05,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 12:10:05,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 12:10:05,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 12:10:05,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5104464b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05, skipping insertion in model container [2025-03-17 12:10:05,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 12:10:05,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:10:05,662 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 12:10:05,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 12:10:05,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:10:05,726 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 12:10:05,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:10:05,816 INFO L204 MainTranslator]: Completed translation [2025-03-17 12:10:05,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05 WrapperNode [2025-03-17 12:10:05,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 12:10:05,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 12:10:05,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 12:10:05,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 12:10:05,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,856 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 119 [2025-03-17 12:10:05,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 12:10:05,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 12:10:05,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 12:10:05,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 12:10:05,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,890 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2025-03-17 12:10:05,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,907 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 12:10:05,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 12:10:05,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 12:10:05,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 12:10:05,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (1/1) ... [2025-03-17 12:10:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 12:10:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:05,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 12:10:05,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2025-03-17 12:10:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 12:10:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 12:10:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 12:10:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 12:10:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 12:10:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 12:10:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 12:10:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2025-03-17 12:10:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2025-03-17 12:10:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-03-17 12:10:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-03-17 12:10:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-03-17 12:10:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 12:10:05,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 12:10:06,080 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 12:10:06,081 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 12:10:06,139 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L923: havoc #t~mem54; [2025-03-17 12:10:06,658 INFO L? ?]: Removed 169 outVars from TransFormulas that were not future-live. [2025-03-17 12:10:06,658 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 12:10:06,672 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 12:10:06,675 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 12:10:06,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:10:06 BoogieIcfgContainer [2025-03-17 12:10:06,676 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 12:10:06,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 12:10:06,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 12:10:06,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 12:10:06,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:10:05" (1/3) ... [2025-03-17 12:10:06,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fc21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:10:06, skipping insertion in model container [2025-03-17 12:10:06,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:10:05" (2/3) ... [2025-03-17 12:10:06,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fc21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:10:06, skipping insertion in model container [2025-03-17 12:10:06,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:10:06" (3/3) ... [2025-03-17 12:10:06,684 INFO L128 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2025-03-17 12:10:06,694 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 12:10:06,695 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-1.i that has 5 procedures, 216 locations, 1 initial locations, 23 loop locations, and 71 error locations. [2025-03-17 12:10:06,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 12:10:06,728 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;@3bb57d9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 12:10:06,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2025-03-17 12:10:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 12:10:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 12:10:06,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:06,739 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 12:10:06,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 9479421, now seen corresponding path program 1 times [2025-03-17 12:10:06,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:06,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915844316] [2025-03-17 12:10:06,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:06,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:06,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:06,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 12:10:06,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:10:06,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:10:06,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:06,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:06,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 12:10:06,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:06,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:06,848 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915844316] [2025-03-17 12:10:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915844316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 12:10:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563201770] [2025-03-17 12:10:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:06,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 12:10:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:06,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 12:10:06,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 12:10:06,883 INFO L87 Difference]: Start difference. First operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:06,912 INFO L93 Difference]: Finished difference Result 211 states and 233 transitions. [2025-03-17 12:10:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 12:10:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2025-03-17 12:10:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:06,924 INFO L225 Difference]: With dead ends: 211 [2025-03-17 12:10:06,925 INFO L226 Difference]: Without dead ends: 209 [2025-03-17 12:10:06,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 12:10:06,929 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:06,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 12:10:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-17 12:10:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-03-17 12:10:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 114 states have (on average 1.7894736842105263) internal successors, (204), 198 states have internal predecessors, (204), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 12:10:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2025-03-17 12:10:06,986 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 4 [2025-03-17 12:10:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:06,987 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2025-03-17 12:10:06,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2025-03-17 12:10:06,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 12:10:06,987 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:06,987 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 12:10:06,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 12:10:07,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:07,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:07,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash 9479452, now seen corresponding path program 1 times [2025-03-17 12:10:07,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:07,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864790746] [2025-03-17 12:10:07,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:07,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:07,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:07,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:07,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 12:10:07,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:10:07,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:10:07,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:07,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:07,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 12:10:07,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:07,292 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 [2025-03-17 12:10:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:07,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:07,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864790746] [2025-03-17 12:10:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864790746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 12:10:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173561282] [2025-03-17 12:10:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:07,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 12:10:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:07,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 12:10:07,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:10:07,309 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:07,469 INFO L93 Difference]: Finished difference Result 206 states and 228 transitions. [2025-03-17 12:10:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 12:10:07,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2025-03-17 12:10:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:07,471 INFO L225 Difference]: With dead ends: 206 [2025-03-17 12:10:07,471 INFO L226 Difference]: Without dead ends: 206 [2025-03-17 12:10:07,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:10:07,472 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:07,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 373 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 12:10:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-17 12:10:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2025-03-17 12:10:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.763157894736842) internal successors, (201), 195 states have internal predecessors, (201), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 12:10:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 228 transitions. [2025-03-17 12:10:07,482 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 228 transitions. Word has length 4 [2025-03-17 12:10:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:07,482 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 228 transitions. [2025-03-17 12:10:07,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 228 transitions. [2025-03-17 12:10:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 12:10:07,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:07,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 12:10:07,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 12:10:07,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:07,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:07,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash 9479453, now seen corresponding path program 1 times [2025-03-17 12:10:07,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:07,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910846597] [2025-03-17 12:10:07,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:07,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:07,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:07,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:07,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 12:10:07,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:10:07,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:10:07,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:07,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:07,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 12:10:07,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:07,747 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 [2025-03-17 12:10:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:07,767 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:07,767 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910846597] [2025-03-17 12:10:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910846597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 12:10:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683925124] [2025-03-17 12:10:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:07,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 12:10:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:07,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 12:10:07,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:10:07,768 INFO L87 Difference]: Start difference. First operand 206 states and 228 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:07,950 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2025-03-17 12:10:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 12:10:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2025-03-17 12:10:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:07,951 INFO L225 Difference]: With dead ends: 203 [2025-03-17 12:10:07,951 INFO L226 Difference]: Without dead ends: 203 [2025-03-17 12:10:07,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:10:07,952 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 4 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:07,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 376 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 12:10:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-17 12:10:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-17 12:10:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 114 states have (on average 1.736842105263158) internal successors, (198), 192 states have internal predecessors, (198), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 12:10:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 225 transitions. [2025-03-17 12:10:07,961 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 225 transitions. Word has length 4 [2025-03-17 12:10:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:07,961 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 225 transitions. [2025-03-17 12:10:07,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:10:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 225 transitions. [2025-03-17 12:10:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 12:10:07,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:07,961 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:07,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 12:10:08,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:08,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:08,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1065199481, now seen corresponding path program 1 times [2025-03-17 12:10:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953347071] [2025-03-17 12:10:08,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:08,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:08,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:08,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:08,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 12:10:08,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 12:10:08,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 12:10:08,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:08,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:08,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 12:10:08,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:08,285 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 12:10:08,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-17 12:10:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:08,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:08,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953347071] [2025-03-17 12:10:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953347071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 12:10:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926610796] [2025-03-17 12:10:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:08,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 12:10:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:08,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 12:10:08,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 12:10:08,359 INFO L87 Difference]: Start difference. First operand 203 states and 225 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-17 12:10:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:08,715 INFO L93 Difference]: Finished difference Result 240 states and 261 transitions. [2025-03-17 12:10:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 12:10:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2025-03-17 12:10:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:08,716 INFO L225 Difference]: With dead ends: 240 [2025-03-17 12:10:08,716 INFO L226 Difference]: Without dead ends: 240 [2025-03-17 12:10:08,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 12:10:08,717 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 253 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:08,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 397 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 12:10:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-03-17 12:10:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2025-03-17 12:10:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 128 states have (on average 1.7578125) internal successors, (225), 205 states have internal predecessors, (225), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 12:10:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 252 transitions. [2025-03-17 12:10:08,724 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 252 transitions. Word has length 7 [2025-03-17 12:10:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:08,725 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 252 transitions. [2025-03-17 12:10:08,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-17 12:10:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 252 transitions. [2025-03-17 12:10:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 12:10:08,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:08,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:08,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 12:10:08,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:08,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:08,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1065199480, now seen corresponding path program 1 times [2025-03-17 12:10:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:08,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466915940] [2025-03-17 12:10:08,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:08,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:08,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 12:10:08,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 12:10:08,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 12:10:08,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:08,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:08,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 12:10:08,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:09,030 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 [2025-03-17 12:10:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:09,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:09,091 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:09,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466915940] [2025-03-17 12:10:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466915940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 12:10:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062676046] [2025-03-17 12:10:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:09,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 12:10:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:09,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 12:10:09,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 12:10:09,092 INFO L87 Difference]: Start difference. First operand 217 states and 252 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-03-17 12:10:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:09,529 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2025-03-17 12:10:09,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 12:10:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2025-03-17 12:10:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:09,530 INFO L225 Difference]: With dead ends: 221 [2025-03-17 12:10:09,530 INFO L226 Difference]: Without dead ends: 221 [2025-03-17 12:10:09,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 12:10:09,531 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 252 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:09,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 308 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 12:10:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-03-17 12:10:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 209. [2025-03-17 12:10:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 124 states have (on average 1.7016129032258065) internal successors, (211), 197 states have internal predecessors, (211), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 12:10:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2025-03-17 12:10:09,536 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 7 [2025-03-17 12:10:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:09,537 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2025-03-17 12:10:09,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-03-17 12:10:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2025-03-17 12:10:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 12:10:09,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:09,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:09,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 12:10:09,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:09,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:09,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1454479932, now seen corresponding path program 1 times [2025-03-17 12:10:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301273209] [2025-03-17 12:10:09,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:09,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:09,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:09,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:09,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 12:10:09,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 12:10:09,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 12:10:09,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:09,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:09,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 12:10:09,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:09,841 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 12:10:09,841 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 [2025-03-17 12:10:09,886 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 16 treesize of output 11 [2025-03-17 12:10:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:09,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:09,971 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301273209] [2025-03-17 12:10:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301273209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 12:10:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638391840] [2025-03-17 12:10:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:09,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 12:10:09,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:09,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 12:10:09,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 12:10:09,972 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2025-03-17 12:10:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:10,527 INFO L93 Difference]: Finished difference Result 221 states and 251 transitions. [2025-03-17 12:10:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 12:10:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 9 [2025-03-17 12:10:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:10,529 INFO L225 Difference]: With dead ends: 221 [2025-03-17 12:10:10,529 INFO L226 Difference]: Without dead ends: 221 [2025-03-17 12:10:10,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-17 12:10:10,529 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 13 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:10,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1357 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 12:10:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-03-17 12:10:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 217. [2025-03-17 12:10:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 131 states have (on average 1.6717557251908397) internal successors, (219), 204 states have internal predecessors, (219), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 248 transitions. [2025-03-17 12:10:10,535 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 248 transitions. Word has length 9 [2025-03-17 12:10:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:10,536 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 248 transitions. [2025-03-17 12:10:10,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2025-03-17 12:10:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 248 transitions. [2025-03-17 12:10:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 12:10:10,536 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:10,536 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:10,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 12:10:10,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:10,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:10,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1454479931, now seen corresponding path program 1 times [2025-03-17 12:10:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:10,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745948544] [2025-03-17 12:10:10,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:10,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:10,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:10,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:10,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 12:10:10,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 12:10:10,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 12:10:10,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:10,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:10,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 12:10:10,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:10,871 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-03-17 12:10:10,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-03-17 12:10:10,890 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 12:10:10,890 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 [2025-03-17 12:10:10,939 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 16 treesize of output 11 [2025-03-17 12:10:10,945 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 16 treesize of output 11 [2025-03-17 12:10:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:11,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:11,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:11,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745948544] [2025-03-17 12:10:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745948544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:11,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:11,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 12:10:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350673550] [2025-03-17 12:10:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:11,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 12:10:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:11,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 12:10:11,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 12:10:11,060 INFO L87 Difference]: Start difference. First operand 217 states and 248 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2025-03-17 12:10:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:11,752 INFO L93 Difference]: Finished difference Result 223 states and 253 transitions. [2025-03-17 12:10:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 12:10:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 9 [2025-03-17 12:10:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:11,753 INFO L225 Difference]: With dead ends: 223 [2025-03-17 12:10:11,754 INFO L226 Difference]: Without dead ends: 223 [2025-03-17 12:10:11,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-17 12:10:11,754 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 19 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:11,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1221 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 12:10:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-17 12:10:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2025-03-17 12:10:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 131 states have (on average 1.6641221374045803) internal successors, (218), 204 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 247 transitions. [2025-03-17 12:10:11,760 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 247 transitions. Word has length 9 [2025-03-17 12:10:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:11,760 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 247 transitions. [2025-03-17 12:10:11,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2025-03-17 12:10:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 247 transitions. [2025-03-17 12:10:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 12:10:11,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:11,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:11,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 12:10:11,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:11,966 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:11,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2139204786, now seen corresponding path program 1 times [2025-03-17 12:10:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837025567] [2025-03-17 12:10:11,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:11,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:11,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:11,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 12:10:12,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 12:10:12,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 12:10:12,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:12,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:12,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 12:10:12,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:12,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:12,072 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:12,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837025567] [2025-03-17 12:10:12,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837025567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 12:10:12,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257138968] [2025-03-17 12:10:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:12,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 12:10:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:12,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 12:10:12,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 12:10:12,073 INFO L87 Difference]: Start difference. First operand 217 states and 247 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2025-03-17 12:10:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:12,363 INFO L93 Difference]: Finished difference Result 222 states and 244 transitions. [2025-03-17 12:10:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 12:10:12,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 10 [2025-03-17 12:10:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:12,364 INFO L225 Difference]: With dead ends: 222 [2025-03-17 12:10:12,364 INFO L226 Difference]: Without dead ends: 222 [2025-03-17 12:10:12,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 12:10:12,365 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 28 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:12,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 788 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 12:10:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-03-17 12:10:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2025-03-17 12:10:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 131 states have (on average 1.6412213740458015) internal successors, (215), 203 states have internal predecessors, (215), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 244 transitions. [2025-03-17 12:10:12,371 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 244 transitions. Word has length 10 [2025-03-17 12:10:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:12,371 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 244 transitions. [2025-03-17 12:10:12,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2025-03-17 12:10:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 244 transitions. [2025-03-17 12:10:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 12:10:12,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:12,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:12,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 12:10:12,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:12,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:12,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2139204785, now seen corresponding path program 1 times [2025-03-17 12:10:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291719918] [2025-03-17 12:10:12,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:12,575 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:12,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 12:10:12,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 12:10:12,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 12:10:12,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:12,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:12,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 12:10:12,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:12,644 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 [2025-03-17 12:10:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:12,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:12,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291719918] [2025-03-17 12:10:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291719918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:12,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:12,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 12:10:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525150346] [2025-03-17 12:10:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:12,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 12:10:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:12,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 12:10:12,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 12:10:12,702 INFO L87 Difference]: Start difference. First operand 216 states and 244 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2025-03-17 12:10:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:13,039 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2025-03-17 12:10:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 12:10:13,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 10 [2025-03-17 12:10:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:13,041 INFO L225 Difference]: With dead ends: 220 [2025-03-17 12:10:13,041 INFO L226 Difference]: Without dead ends: 220 [2025-03-17 12:10:13,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 12:10:13,041 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 22 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:13,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 809 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 12:10:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-17 12:10:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2025-03-17 12:10:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 131 states have (on average 1.6259541984732824) internal successors, (213), 203 states have internal predecessors, (213), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 242 transitions. [2025-03-17 12:10:13,047 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 242 transitions. Word has length 10 [2025-03-17 12:10:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:13,047 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 242 transitions. [2025-03-17 12:10:13,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2025-03-17 12:10:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 242 transitions. [2025-03-17 12:10:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 12:10:13,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:13,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:13,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 12:10:13,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:13,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:13,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1513540011, now seen corresponding path program 1 times [2025-03-17 12:10:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015806129] [2025-03-17 12:10:13,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:13,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:13,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:13,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 12:10:13,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 12:10:13,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 12:10:13,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:13,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:13,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 12:10:13,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:13,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:13,338 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015806129] [2025-03-17 12:10:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015806129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:13,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:13,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 12:10:13,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549708034] [2025-03-17 12:10:13,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:13,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 12:10:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:13,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 12:10:13,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 12:10:13,340 INFO L87 Difference]: Start difference. First operand 216 states and 242 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-17 12:10:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:13,492 INFO L93 Difference]: Finished difference Result 215 states and 240 transitions. [2025-03-17 12:10:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 12:10:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 12 [2025-03-17 12:10:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:13,493 INFO L225 Difference]: With dead ends: 215 [2025-03-17 12:10:13,493 INFO L226 Difference]: Without dead ends: 215 [2025-03-17 12:10:13,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 12:10:13,494 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 5 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:13,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 508 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 12:10:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-03-17 12:10:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2025-03-17 12:10:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 131 states have (on average 1.6106870229007633) internal successors, (211), 202 states have internal predecessors, (211), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2025-03-17 12:10:13,499 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 12 [2025-03-17 12:10:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:13,499 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2025-03-17 12:10:13,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-17 12:10:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2025-03-17 12:10:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 12:10:13,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:13,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:13,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 12:10:13,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:13,703 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:13,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1513540012, now seen corresponding path program 1 times [2025-03-17 12:10:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:13,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334058642] [2025-03-17 12:10:13,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:13,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:13,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:13,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 12:10:13,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 12:10:13,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 12:10:13,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:13,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:13,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 12:10:13,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:13,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:13,833 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334058642] [2025-03-17 12:10:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334058642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 12:10:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155710386] [2025-03-17 12:10:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:13,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 12:10:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:13,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 12:10:13,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 12:10:13,834 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2025-03-17 12:10:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:14,134 INFO L93 Difference]: Finished difference Result 217 states and 239 transitions. [2025-03-17 12:10:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 12:10:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 12 [2025-03-17 12:10:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:14,136 INFO L225 Difference]: With dead ends: 217 [2025-03-17 12:10:14,136 INFO L226 Difference]: Without dead ends: 217 [2025-03-17 12:10:14,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-17 12:10:14,136 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 237 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:14,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 885 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 12:10:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-03-17 12:10:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2025-03-17 12:10:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 131 states have (on average 1.6030534351145038) internal successors, (210), 202 states have internal predecessors, (210), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 239 transitions. [2025-03-17 12:10:14,141 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 239 transitions. Word has length 12 [2025-03-17 12:10:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:14,141 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 239 transitions. [2025-03-17 12:10:14,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2025-03-17 12:10:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 239 transitions. [2025-03-17 12:10:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-17 12:10:14,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:14,142 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] [2025-03-17 12:10:14,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 12:10:14,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:14,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting inspectErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:14,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1999509222, now seen corresponding path program 1 times [2025-03-17 12:10:14,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582729620] [2025-03-17 12:10:14,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:14,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:14,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:14,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 12:10:14,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 12:10:14,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 12:10:14,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:14,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:14,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 12:10:14,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:14,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:14,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:14,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582729620] [2025-03-17 12:10:14,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582729620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:14,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:14,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 12:10:14,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627629313] [2025-03-17 12:10:14,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:14,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 12:10:14,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:14,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 12:10:14,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 12:10:14,494 INFO L87 Difference]: Start difference. First operand 215 states and 239 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:14,934 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2025-03-17 12:10:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 12:10:14,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-03-17 12:10:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:14,936 INFO L225 Difference]: With dead ends: 210 [2025-03-17 12:10:14,936 INFO L226 Difference]: Without dead ends: 210 [2025-03-17 12:10:14,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-17 12:10:14,936 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 361 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:14,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 430 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 12:10:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-03-17 12:10:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2025-03-17 12:10:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 131 states have (on average 1.5648854961832062) internal successors, (205), 197 states have internal predecessors, (205), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2025-03-17 12:10:14,941 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 26 [2025-03-17 12:10:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:14,941 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2025-03-17 12:10:14,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2025-03-17 12:10:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-17 12:10:14,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:14,942 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] [2025-03-17 12:10:14,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 12:10:15,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:15,143 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:15,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1999509221, now seen corresponding path program 1 times [2025-03-17 12:10:15,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:15,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373623854] [2025-03-17 12:10:15,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:15,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:15,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 12:10:15,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 12:10:15,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 12:10:15,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:15,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:15,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 12:10:15,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:15,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:15,399 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373623854] [2025-03-17 12:10:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373623854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 12:10:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548040862] [2025-03-17 12:10:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:15,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 12:10:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:15,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 12:10:15,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 12:10:15,400 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:15,983 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2025-03-17 12:10:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 12:10:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-03-17 12:10:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:15,985 INFO L225 Difference]: With dead ends: 209 [2025-03-17 12:10:15,985 INFO L226 Difference]: Without dead ends: 209 [2025-03-17 12:10:15,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-03-17 12:10:15,985 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 301 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:15,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 480 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 12:10:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-17 12:10:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-03-17 12:10:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 131 states have (on average 1.5572519083969465) internal successors, (204), 196 states have internal predecessors, (204), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 233 transitions. [2025-03-17 12:10:15,990 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 233 transitions. Word has length 26 [2025-03-17 12:10:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:15,990 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 233 transitions. [2025-03-17 12:10:15,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 233 transitions. [2025-03-17 12:10:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 12:10:15,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:15,991 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] [2025-03-17 12:10:16,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 12:10:16,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:16,191 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:16,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1674575857, now seen corresponding path program 1 times [2025-03-17 12:10:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720249606] [2025-03-17 12:10:16,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:16,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:16,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 12:10:16,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 12:10:16,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 12:10:16,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:16,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:16,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 12:10:16,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:16,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:16,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720249606] [2025-03-17 12:10:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720249606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 12:10:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287972642] [2025-03-17 12:10:16,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:16,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 12:10:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:16,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 12:10:16,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 12:10:16,316 INFO L87 Difference]: Start difference. First operand 209 states and 233 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:16,421 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2025-03-17 12:10:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 12:10:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2025-03-17 12:10:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:16,422 INFO L225 Difference]: With dead ends: 208 [2025-03-17 12:10:16,422 INFO L226 Difference]: Without dead ends: 208 [2025-03-17 12:10:16,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 12:10:16,423 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 278 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:16,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 441 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 12:10:16,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-03-17 12:10:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2025-03-17 12:10:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 131 states have (on average 1.549618320610687) internal successors, (203), 195 states have internal predecessors, (203), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-17 12:10:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 231 transitions. [2025-03-17 12:10:16,427 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 231 transitions. Word has length 28 [2025-03-17 12:10:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:16,427 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 231 transitions. [2025-03-17 12:10:16,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 231 transitions. [2025-03-17 12:10:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 12:10:16,428 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:16,428 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:16,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 12:10:16,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:16,629 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:16,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1049819539, now seen corresponding path program 1 times [2025-03-17 12:10:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638364079] [2025-03-17 12:10:16,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:16,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:16,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:16,631 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 12:10:16,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 12:10:16,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 12:10:16,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:16,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:16,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 12:10:16,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:16,763 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-17 12:10:16,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-17 12:10:17,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:17,264 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 16 treesize of output 11 [2025-03-17 12:10:17,293 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 12:10:17,294 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 36 treesize of output 35 [2025-03-17 12:10:17,413 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2025-03-17 12:10:17,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2025-03-17 12:10:17,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2025-03-17 12:10:17,600 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 27 treesize of output 15 [2025-03-17 12:10:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:17,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 12:10:17,782 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_435) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (_ bv0 1))) is different from false [2025-03-17 12:10:17,879 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_17| (_ BitVec 32)) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_434) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_433) |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_435) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2025-03-17 12:10:17,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:17,967 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2025-03-17 12:10:17,969 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:17,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2025-03-17 12:10:17,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 12:10:18,128 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638364079] [2025-03-17 12:10:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638364079] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 12:10:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1636606650] [2025-03-17 12:10:18,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:18,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 12:10:18,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 12:10:18,130 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 12:10:18,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-03-17 12:10:18,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 12:10:18,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 12:10:18,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:18,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:18,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-17 12:10:18,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:18,555 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2025-03-17 12:10:18,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2025-03-17 12:10:19,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:19,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 12:10:19,350 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 12:10:19,350 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 41 [2025-03-17 12:10:19,577 INFO L349 Elim1Store]: treesize reduction 122, result has 30.3 percent of original size [2025-03-17 12:10:19,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 76 [2025-03-17 12:10:19,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2025-03-17 12:10:19,922 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 35 treesize of output 19 [2025-03-17 12:10:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:20,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 12:10:20,198 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_17| (_ BitVec 32)) (v_ArrVal_512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_435 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_434) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_512) |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_435) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2025-03-17 12:10:20,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:20,270 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2025-03-17 12:10:20,272 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:20,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2025-03-17 12:10:20,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 12:10:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1636606650] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 12:10:20,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 12:10:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2025-03-17 12:10:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230545528] [2025-03-17 12:10:20,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 12:10:20,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 12:10:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:20,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 12:10:20,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1220, Unknown=13, NotChecked=222, Total=1640 [2025-03-17 12:10:20,384 INFO L87 Difference]: Start difference. First operand 208 states and 231 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 12:10:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:23,129 INFO L93 Difference]: Finished difference Result 371 states and 410 transitions. [2025-03-17 12:10:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 12:10:23,130 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2025-03-17 12:10:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:23,131 INFO L225 Difference]: With dead ends: 371 [2025-03-17 12:10:23,131 INFO L226 Difference]: Without dead ends: 371 [2025-03-17 12:10:23,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=296, Invalid=1595, Unknown=13, NotChecked=258, Total=2162 [2025-03-17 12:10:23,132 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 535 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:23,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2009 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-17 12:10:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2025-03-17 12:10:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 285. [2025-03-17 12:10:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 203 states have (on average 1.5763546798029557) internal successors, (320), 268 states have internal predecessors, (320), 24 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-17 12:10:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 354 transitions. [2025-03-17 12:10:23,139 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 354 transitions. Word has length 28 [2025-03-17 12:10:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:23,139 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 354 transitions. [2025-03-17 12:10:23,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 12:10:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 354 transitions. [2025-03-17 12:10:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 12:10:23,140 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:23,141 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 12:10:23,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2025-03-17 12:10:23,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 12:10:23,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:23,542 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:23,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1049819538, now seen corresponding path program 1 times [2025-03-17 12:10:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136506030] [2025-03-17 12:10:23,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:23,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:23,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:23,544 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:23,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 12:10:23,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 12:10:23,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 12:10:23,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:23,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:23,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-17 12:10:23,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:23,666 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 [2025-03-17 12:10:23,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 12:10:23,673 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 [2025-03-17 12:10:23,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:23,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:24,052 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 16 treesize of output 11 [2025-03-17 12:10:24,065 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 16 treesize of output 11 [2025-03-17 12:10:24,093 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 12:10:24,093 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 61 treesize of output 54 [2025-03-17 12:10:24,100 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 24 treesize of output 11 [2025-03-17 12:10:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:24,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:24,221 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-17 12:10:24,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2025-03-17 12:10:24,241 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2025-03-17 12:10:24,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2025-03-17 12:10:24,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-03-17 12:10:24,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 12:10:24,465 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 25 treesize of output 13 [2025-03-17 12:10:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:24,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 12:10:24,780 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_598) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_597 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_598) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_597) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2025-03-17 12:10:25,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:25,923 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2025-03-17 12:10:25,928 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:25,931 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 84 treesize of output 76 [2025-03-17 12:10:25,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:25,943 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2025-03-17 12:10:25,946 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:25,949 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 96 treesize of output 84 [2025-03-17 12:10:25,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 12:10:25,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 12:10:26,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:26,088 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2025-03-17 12:10:26,091 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:26,094 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 46 treesize of output 34 [2025-03-17 12:10:26,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136506030] [2025-03-17 12:10:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136506030] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 12:10:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1754841438] [2025-03-17 12:10:26,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 12:10:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 12:10:26,360 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 12:10:26,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-03-17 12:10:26,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 12:10:26,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 12:10:26,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:26,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:26,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-17 12:10:26,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:26,960 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 [2025-03-17 12:10:26,993 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-17 12:10:26,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-17 12:10:27,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:28,284 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 16 treesize of output 11 [2025-03-17 12:10:28,299 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 16 treesize of output 11 [2025-03-17 12:10:28,340 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 12:10:28,341 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 61 treesize of output 54 [2025-03-17 12:10:28,347 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 24 treesize of output 11 [2025-03-17 12:10:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:28,611 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-03-17 12:10:28,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2025-03-17 12:10:28,644 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2025-03-17 12:10:28,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2025-03-17 12:10:28,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 12:10:28,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-03-17 12:10:29,215 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 25 treesize of output 13 [2025-03-17 12:10:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:29,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 12:10:31,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:31,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2025-03-17 12:10:31,405 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:31,408 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 46 treesize of output 34 [2025-03-17 12:10:31,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:31,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:31,443 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2025-03-17 12:10:31,448 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:31,450 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 84 treesize of output 76 [2025-03-17 12:10:31,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 12:10:31,461 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2025-03-17 12:10:31,465 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 12:10:31,467 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 96 treesize of output 84 [2025-03-17 12:10:31,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-17 12:10:31,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 12:10:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1754841438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 12:10:31,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 12:10:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2025-03-17 12:10:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747681618] [2025-03-17 12:10:31,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 12:10:31,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-17 12:10:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:31,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-17 12:10:31,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1420, Unknown=46, NotChecked=78, Total=1722 [2025-03-17 12:10:31,789 INFO L87 Difference]: Start difference. First operand 285 states and 354 transitions. Second operand has 31 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 12:10:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:38,927 INFO L93 Difference]: Finished difference Result 370 states and 409 transitions. [2025-03-17 12:10:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 12:10:38,928 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2025-03-17 12:10:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:38,929 INFO L225 Difference]: With dead ends: 370 [2025-03-17 12:10:38,929 INFO L226 Difference]: Without dead ends: 370 [2025-03-17 12:10:38,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=319, Invalid=1893, Unknown=48, NotChecked=92, Total=2352 [2025-03-17 12:10:38,929 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1131 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:38,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 2103 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2025-03-17 12:10:38,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-03-17 12:10:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 277. [2025-03-17 12:10:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 196 states have (on average 1.5918367346938775) internal successors, (312), 261 states have internal predecessors, (312), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-17 12:10:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 344 transitions. [2025-03-17 12:10:38,935 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 344 transitions. Word has length 28 [2025-03-17 12:10:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:38,936 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 344 transitions. [2025-03-17 12:10:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 26 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 12:10:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 344 transitions. [2025-03-17 12:10:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-17 12:10:38,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:38,937 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] [2025-03-17 12:10:38,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-03-17 12:10:39,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 12:10:39,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:39,338 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting inspectErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:39,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -477679360, now seen corresponding path program 1 times [2025-03-17 12:10:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117792312] [2025-03-17 12:10:39,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:39,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:39,341 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:39,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 12:10:39,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 12:10:39,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 12:10:39,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:39,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:39,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 12:10:39,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:39,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:39,466 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 [2025-03-17 12:10:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:39,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:39,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117792312] [2025-03-17 12:10:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117792312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 12:10:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467993008] [2025-03-17 12:10:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:39,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 12:10:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:39,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 12:10:39,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 12:10:39,634 INFO L87 Difference]: Start difference. First operand 277 states and 344 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:40,093 INFO L93 Difference]: Finished difference Result 275 states and 340 transitions. [2025-03-17 12:10:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 12:10:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2025-03-17 12:10:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:40,095 INFO L225 Difference]: With dead ends: 275 [2025-03-17 12:10:40,095 INFO L226 Difference]: Without dead ends: 275 [2025-03-17 12:10:40,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 12:10:40,095 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 288 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:40,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 218 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 12:10:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2025-03-17 12:10:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2025-03-17 12:10:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 1.5714285714285714) internal successors, (308), 259 states have internal predecessors, (308), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-17 12:10:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 340 transitions. [2025-03-17 12:10:40,102 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 340 transitions. Word has length 29 [2025-03-17 12:10:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:40,102 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 340 transitions. [2025-03-17 12:10:40,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 340 transitions. [2025-03-17 12:10:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-17 12:10:40,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:40,102 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] [2025-03-17 12:10:40,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 12:10:40,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:40,308 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:40,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 515257110, now seen corresponding path program 1 times [2025-03-17 12:10:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222895592] [2025-03-17 12:10:40,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:40,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:40,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:40,311 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:40,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 12:10:40,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 12:10:40,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 12:10:40,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:40,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:40,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 12:10:40,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:40,461 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 12:10:40,461 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 [2025-03-17 12:10:40,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 12:10:40,676 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 16 treesize of output 11 [2025-03-17 12:10:40,688 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 16 treesize of output 11 [2025-03-17 12:10:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:40,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:40,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222895592] [2025-03-17 12:10:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222895592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:40,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 12:10:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449820518] [2025-03-17 12:10:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:40,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 12:10:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:40,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 12:10:40,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 12:10:40,787 INFO L87 Difference]: Start difference. First operand 275 states and 340 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:10:42,560 INFO L93 Difference]: Finished difference Result 348 states and 386 transitions. [2025-03-17 12:10:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 12:10:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2025-03-17 12:10:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:10:42,561 INFO L225 Difference]: With dead ends: 348 [2025-03-17 12:10:42,561 INFO L226 Difference]: Without dead ends: 348 [2025-03-17 12:10:42,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2025-03-17 12:10:42,562 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 868 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 12:10:42,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1106 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 12:10:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-03-17 12:10:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 275. [2025-03-17 12:10:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 1.566326530612245) internal successors, (307), 259 states have internal predecessors, (307), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-17 12:10:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 339 transitions. [2025-03-17 12:10:42,569 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 339 transitions. Word has length 31 [2025-03-17 12:10:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:10:42,570 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 339 transitions. [2025-03-17 12:10:42,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 339 transitions. [2025-03-17 12:10:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-17 12:10:42,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:10:42,571 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] [2025-03-17 12:10:42,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-17 12:10:42,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:42,772 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:10:42,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:10:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash -612674038, now seen corresponding path program 1 times [2025-03-17 12:10:42,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:10:42,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920501273] [2025-03-17 12:10:42,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:10:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:10:42,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:10:42,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:10:42,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 12:10:42,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 12:10:42,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 12:10:42,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:10:42,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:10:42,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-17 12:10:42,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:10:42,921 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 12:10:42,921 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 [2025-03-17 12:10:42,987 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 16 treesize of output 11 [2025-03-17 12:10:42,997 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 16 treesize of output 11 [2025-03-17 12:10:43,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2025-03-17 12:10:43,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2025-03-17 12:10:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:10:43,736 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 21 treesize of output 14 [2025-03-17 12:10:43,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2025-03-17 12:10:47,806 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 12:10:47,806 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 25 treesize of output 26 [2025-03-17 12:10:48,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-03-17 12:10:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:10:48,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 12:10:48,068 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 12:10:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920501273] [2025-03-17 12:10:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920501273] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:10:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:10:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 12:10:48,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515934518] [2025-03-17 12:10:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:10:48,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 12:10:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 12:10:48,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 12:10:48,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=255, Unknown=8, NotChecked=0, Total=306 [2025-03-17 12:10:48,069 INFO L87 Difference]: Start difference. First operand 275 states and 339 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:10:50,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:10:54,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:10:58,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:11:02,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:11:07,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:11:11,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:11:30,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 12:11:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:11:33,116 INFO L93 Difference]: Finished difference Result 449 states and 531 transitions. [2025-03-17 12:11:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 12:11:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2025-03-17 12:11:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:11:33,118 INFO L225 Difference]: With dead ends: 449 [2025-03-17 12:11:33,118 INFO L226 Difference]: Without dead ends: 449 [2025-03-17 12:11:33,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=99, Invalid=587, Unknown=16, NotChecked=0, Total=702 [2025-03-17 12:11:33,119 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 353 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 36 mSolverCounterUnsat, 183 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 183 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.9s IncrementalHoareTripleChecker+Time [2025-03-17 12:11:33,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1272 Invalid, 2517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 2298 Invalid, 183 Unknown, 0 Unchecked, 43.9s Time] [2025-03-17 12:11:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2025-03-17 12:11:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 374. [2025-03-17 12:11:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 287 states have (on average 1.5365853658536586) internal successors, (441), 351 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 12:11:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 483 transitions. [2025-03-17 12:11:33,126 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 483 transitions. Word has length 34 [2025-03-17 12:11:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:11:33,127 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 483 transitions. [2025-03-17 12:11:33,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 12:11:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 483 transitions. [2025-03-17 12:11:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-17 12:11:33,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:11:33,127 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] [2025-03-17 12:11:33,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-17 12:11:33,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:11:33,330 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting inspectErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2025-03-17 12:11:33,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:11:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 240210475, now seen corresponding path program 1 times [2025-03-17 12:11:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 12:11:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798980299] [2025-03-17 12:11:33,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:11:33,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:11:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:11:33,332 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:11:33,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 12:11:33,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 12:11:33,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 12:11:33,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:11:33,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:11:33,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 12:11:33,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 12:11:33,762 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-17 12:11:33,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-17 12:11:34,092 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 16 treesize of output 11 [2025-03-17 12:11:34,127 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 16 treesize of output 11 [2025-03-17 12:11:36,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2025-03-17 12:11:37,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2025-03-17 12:11:37,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 12:11:37,427 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 21 treesize of output 14 [2025-03-17 12:11:37,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14