./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.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/uthash-2.0.2/uthash_BER_nondet_test1-2.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 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:34:27,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:34:27,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:34:27,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:34:27,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:34:27,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:34:27,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:34:27,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:34:27,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:34:27,351 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:34:27,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:34:27,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:34:27,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:34:27,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:34:27,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:34:27,352 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:34:27,353 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:34:27,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:34:27,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:34:27,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:34:27,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:34:27,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:34:27,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:34:27,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:34:27,354 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-03-17 13:34:27,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:34:27,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:34:27,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:34:27,631 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:34:27,631 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:34:27,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-03-17 13:34:28,889 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aece51f9/d518f11715b84f6198fd2496a858faa6/FLAGe7b68028a [2025-03-17 13:34:29,230 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:34:29,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-03-17 13:34:29,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aece51f9/d518f11715b84f6198fd2496a858faa6/FLAGe7b68028a [2025-03-17 13:34:29,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aece51f9/d518f11715b84f6198fd2496a858faa6 [2025-03-17 13:34:29,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:34:29,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:34:29,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:34:29,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:34:29,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:34:29,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:34:29" (1/1) ... [2025-03-17 13:34:29,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6affc640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:29, skipping insertion in model container [2025-03-17 13:34:29,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:34:29" (1/1) ... [2025-03-17 13:34:29,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:34:29,572 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,595 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,598 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,605 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,618 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,621 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,622 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,622 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,623 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,625 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:29,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:34:29,645 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 13:34:29,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4aff462b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:29, skipping insertion in model container [2025-03-17 13:34:29,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:34:29,646 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:34:29,648 INFO L158 Benchmark]: Toolchain (without parser) took 371.82ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 93.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:34:29,648 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 226.5MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:34:29,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.87ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 93.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:34:29,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 226.5MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.87ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 93.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: 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/uthash-2.0.2/uthash_BER_nondet_test1-2.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 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:34:31,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:34:31,471 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:34:31,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:34:31,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:34:31,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:34:31,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:34:31,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:34:31,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:34:31,506 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:34:31,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:34:31,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:34:31,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:34:31,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:34:31,507 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:34:31,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:34:31,507 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:34:31,508 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:34:31,509 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:34:31,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:34:31,509 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:34:31,509 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:34:31,509 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:34:31,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:34:31,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:34:31,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:34:31,510 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 -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2025-03-17 13:34:31,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:34:31,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:34:31,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:34:31,808 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:34:31,808 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:34:31,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-03-17 13:34:33,057 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076eab463/c2d9e909590f4be2a0b27c2c775e78d3/FLAG4887dd04a [2025-03-17 13:34:33,322 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:34:33,323 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test1-2.i [2025-03-17 13:34:33,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076eab463/c2d9e909590f4be2a0b27c2c775e78d3/FLAG4887dd04a [2025-03-17 13:34:33,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076eab463/c2d9e909590f4be2a0b27c2c775e78d3 [2025-03-17 13:34:33,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:34:33,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:34:33,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:34:33,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:34:33,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:34:33,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:34:33" (1/1) ... [2025-03-17 13:34:33,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa80bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:33, skipping insertion in model container [2025-03-17 13:34:33,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:34:33" (1/1) ... [2025-03-17 13:34:33,647 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:34:33,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,930 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,933 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,937 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,943 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,953 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,955 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,956 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,960 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:33,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:34:33,981 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:34:33,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:34:34,027 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,052 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,059 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,062 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,068 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,069 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,070 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,071 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,071 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,072 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,074 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:34:34,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:34:34,082 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:34:34,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:34:34,174 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:34:34,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34 WrapperNode [2025-03-17 13:34:34,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:34:34,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:34:34,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:34:34,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:34:34,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,234 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 729 [2025-03-17 13:34:34,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:34:34,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:34:34,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:34:34,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:34:34,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,308 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-03-17 13:34:34,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:34:34,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:34:34,385 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:34:34,385 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:34:34,386 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (1/1) ... [2025-03-17 13:34:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:34:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:34,416 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 13:34:34,427 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 13:34:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:34:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:34:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:34:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:34:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:34:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:34:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:34:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:34:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:34:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:34:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:34:34,601 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:34:34,602 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:34:36,856 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2025-03-17 13:34:36,856 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:34:36,881 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:34:36,886 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:34:36,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:34:36 BoogieIcfgContainer [2025-03-17 13:34:36,886 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:34:36,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:34:36,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:34:36,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:34:36,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:34:33" (1/3) ... [2025-03-17 13:34:36,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8a166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:34:36, skipping insertion in model container [2025-03-17 13:34:36,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:34:34" (2/3) ... [2025-03-17 13:34:36,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8a166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:34:36, skipping insertion in model container [2025-03-17 13:34:36,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:34:36" (3/3) ... [2025-03-17 13:34:36,895 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test1-2.i [2025-03-17 13:34:36,905 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:34:36,907 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test1-2.i that has 3 procedures, 834 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2025-03-17 13:34:36,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:34:36,969 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;@7ba03121, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:34:36,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-03-17 13:34:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 829 states, 402 states have (on average 2.243781094527363) internal successors, (902), 824 states have internal predecessors, (902), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:34:36,976 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:36,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:34:36,977 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:36,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash 28219979, now seen corresponding path program 1 times [2025-03-17 13:34:36,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:36,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606057050] [2025-03-17 13:34:36,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:36,989 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 13:34:36,991 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 13:34:37,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:34:37,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:34:37,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:37,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:37,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:34:37,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:37,166 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 13:34:37,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:37,167 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606057050] [2025-03-17 13:34:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606057050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:37,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:37,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:34:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834309705] [2025-03-17 13:34:37,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:37,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:37,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:37,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:37,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:37,203 INFO L87 Difference]: Start difference. First operand has 829 states, 402 states have (on average 2.243781094527363) internal successors, (902), 824 states have internal predecessors, (902), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.0) 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 13:34:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:37,926 INFO L93 Difference]: Finished difference Result 1137 states and 1218 transitions. [2025-03-17 13:34:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:34:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) 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 13:34:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:37,944 INFO L225 Difference]: With dead ends: 1137 [2025-03-17 13:34:37,944 INFO L226 Difference]: Without dead ends: 1135 [2025-03-17 13:34:37,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:37,951 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 339 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:37,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2461 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 13:34:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2025-03-17 13:34:38,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 905. [2025-03-17 13:34:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 484 states have (on average 2.084710743801653) internal successors, (1009), 900 states have internal predecessors, (1009), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1015 transitions. [2025-03-17 13:34:38,025 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1015 transitions. Word has length 4 [2025-03-17 13:34:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:38,025 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1015 transitions. [2025-03-17 13:34:38,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) 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 13:34:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1015 transitions. [2025-03-17 13:34:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:34:38,026 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:38,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:34:38,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 13:34:38,231 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 13:34:38,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:38,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 28874365, now seen corresponding path program 1 times [2025-03-17 13:34:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533366187] [2025-03-17 13:34:38,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:38,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:38,234 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 13:34:38,235 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 13:34:38,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:34:38,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:34:38,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:38,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:38,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:34:38,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:38,335 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 13:34:38,344 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 13:34:38,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:38,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533366187] [2025-03-17 13:34:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533366187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:38,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:38,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:34:38,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440951313] [2025-03-17 13:34:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:38,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:34:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:38,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:34:38,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:34:38,346 INFO L87 Difference]: Start difference. First operand 905 states and 1015 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 13:34:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:39,273 INFO L93 Difference]: Finished difference Result 856 states and 960 transitions. [2025-03-17 13:34:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:34:39,274 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 13:34:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:39,277 INFO L225 Difference]: With dead ends: 856 [2025-03-17 13:34:39,277 INFO L226 Difference]: Without dead ends: 856 [2025-03-17 13:34:39,277 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 13:34:39,278 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 512 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:39,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 607 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 13:34:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2025-03-17 13:34:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2025-03-17 13:34:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 484 states have (on average 1.9710743801652892) internal successors, (954), 851 states have internal predecessors, (954), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 960 transitions. [2025-03-17 13:34:39,294 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 960 transitions. Word has length 4 [2025-03-17 13:34:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:39,295 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 960 transitions. [2025-03-17 13:34:39,295 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 13:34:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 960 transitions. [2025-03-17 13:34:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:34:39,295 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:39,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:34:39,302 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 13:34:39,496 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 13:34:39,496 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:39,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash 28874366, now seen corresponding path program 1 times [2025-03-17 13:34:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770559266] [2025-03-17 13:34:39,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:39,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:39,500 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 13:34:39,501 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 13:34:39,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:34:39,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:34:39,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:39,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:39,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:34:39,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:39,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:34:39,594 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 13:34:39,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:39,595 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770559266] [2025-03-17 13:34:39,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770559266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:39,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:39,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:34:39,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409575030] [2025-03-17 13:34:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:39,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:34:39,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:39,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:34:39,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:34:39,596 INFO L87 Difference]: Start difference. First operand 856 states and 960 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 13:34:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:40,749 INFO L93 Difference]: Finished difference Result 929 states and 1031 transitions. [2025-03-17 13:34:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:34:40,749 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 13:34:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:40,752 INFO L225 Difference]: With dead ends: 929 [2025-03-17 13:34:40,752 INFO L226 Difference]: Without dead ends: 929 [2025-03-17 13:34:40,752 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 13:34:40,755 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 264 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:40,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1038 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:34:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2025-03-17 13:34:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 882. [2025-03-17 13:34:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 521 states have (on average 1.9404990403071016) internal successors, (1011), 877 states have internal predecessors, (1011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1017 transitions. [2025-03-17 13:34:40,783 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1017 transitions. Word has length 4 [2025-03-17 13:34:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:40,784 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1017 transitions. [2025-03-17 13:34:40,784 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 13:34:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1017 transitions. [2025-03-17 13:34:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:34:40,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:40,784 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:34:40,790 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 13:34:40,984 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 13:34:40,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:40,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1349326793, now seen corresponding path program 1 times [2025-03-17 13:34:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:40,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508233856] [2025-03-17 13:34:40,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:40,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:40,989 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 13:34:40,990 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 13:34:41,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:34:41,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:34:41,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:41,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:41,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:34:41,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:41,079 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 13:34:41,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:41,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508233856] [2025-03-17 13:34:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508233856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:41,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:41,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:34:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280066977] [2025-03-17 13:34:41,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:41,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:41,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:41,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:41,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:41,080 INFO L87 Difference]: Start difference. First operand 882 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:41,102 INFO L93 Difference]: Finished difference Result 882 states and 1016 transitions. [2025-03-17 13:34:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:34:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:34:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:41,105 INFO L225 Difference]: With dead ends: 882 [2025-03-17 13:34:41,105 INFO L226 Difference]: Without dead ends: 882 [2025-03-17 13:34:41,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 13:34:41,106 INFO L435 NwaCegarLoop]: 792 mSDtfsCounter, 7 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:41,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2372 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:34:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2025-03-17 13:34:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2025-03-17 13:34:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 521 states have (on average 1.9385796545105567) internal successors, (1010), 877 states have internal predecessors, (1010), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1016 transitions. [2025-03-17 13:34:41,119 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1016 transitions. Word has length 6 [2025-03-17 13:34:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:41,119 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1016 transitions. [2025-03-17 13:34:41,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1016 transitions. [2025-03-17 13:34:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:34:41,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:41,120 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:41,127 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 13:34:41,320 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 13:34:41,321 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:41,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1219644276, now seen corresponding path program 1 times [2025-03-17 13:34:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550831898] [2025-03-17 13:34:41,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:41,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:41,323 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 13:34:41,324 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 13:34:41,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:34:41,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:34:41,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:41,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:41,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 13:34:41,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:41,409 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 13:34:41,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:41,409 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:41,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550831898] [2025-03-17 13:34:41,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550831898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:41,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:41,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:34:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824959494] [2025-03-17 13:34:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:41,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:34:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:41,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:34:41,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:34:41,410 INFO L87 Difference]: Start difference. First operand 882 states and 1016 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:42,096 INFO L93 Difference]: Finished difference Result 883 states and 1016 transitions. [2025-03-17 13:34:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:34:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:34:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:42,099 INFO L225 Difference]: With dead ends: 883 [2025-03-17 13:34:42,099 INFO L226 Difference]: Without dead ends: 876 [2025-03-17 13:34:42,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:34:42,101 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 0 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:42,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1220 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 13:34:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2025-03-17 13:34:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2025-03-17 13:34:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 515 states have (on average 1.9475728155339807) internal successors, (1003), 871 states have internal predecessors, (1003), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1009 transitions. [2025-03-17 13:34:42,115 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1009 transitions. Word has length 9 [2025-03-17 13:34:42,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:42,115 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1009 transitions. [2025-03-17 13:34:42,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1009 transitions. [2025-03-17 13:34:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 13:34:42,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:42,116 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:42,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 13:34:42,320 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 13:34:42,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2065065022, now seen corresponding path program 1 times [2025-03-17 13:34:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:42,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345490808] [2025-03-17 13:34:42,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:42,323 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 13:34:42,323 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 13:34:42,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:34:42,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:34:42,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:42,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:42,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:34:42,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:42,423 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 13:34:42,451 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 13:34:42,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:42,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345490808] [2025-03-17 13:34:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345490808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:42,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:34:42,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916720596] [2025-03-17 13:34:42,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:42,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:42,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:42,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:42,454 INFO L87 Difference]: Start difference. First operand 876 states and 1009 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:43,630 INFO L93 Difference]: Finished difference Result 861 states and 971 transitions. [2025-03-17 13:34:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:34:43,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 13:34:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:43,633 INFO L225 Difference]: With dead ends: 861 [2025-03-17 13:34:43,633 INFO L226 Difference]: Without dead ends: 861 [2025-03-17 13:34:43,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:43,636 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 559 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:43,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 887 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:34:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2025-03-17 13:34:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 853. [2025-03-17 13:34:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 515 states have (on average 1.858252427184466) internal successors, (957), 848 states have internal predecessors, (957), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 963 transitions. [2025-03-17 13:34:43,650 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 963 transitions. Word has length 13 [2025-03-17 13:34:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:43,651 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 963 transitions. [2025-03-17 13:34:43,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 963 transitions. [2025-03-17 13:34:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 13:34:43,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:43,651 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:43,662 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 13:34:43,856 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 13:34:43,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:43,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2065065021, now seen corresponding path program 1 times [2025-03-17 13:34:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194443695] [2025-03-17 13:34:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:43,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:43,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:43,863 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 13:34:43,865 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 13:34:43,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:34:43,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:34:43,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:43,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:43,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:34:43,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:43,984 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 13:34:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:44,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:44,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194443695] [2025-03-17 13:34:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194443695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:44,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:44,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:34:44,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991994799] [2025-03-17 13:34:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:44,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:44,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:44,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:44,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:44,062 INFO L87 Difference]: Start difference. First operand 853 states and 963 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:45,492 INFO L93 Difference]: Finished difference Result 1030 states and 1131 transitions. [2025-03-17 13:34:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:34:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 13:34:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:45,495 INFO L225 Difference]: With dead ends: 1030 [2025-03-17 13:34:45,495 INFO L226 Difference]: Without dead ends: 1030 [2025-03-17 13:34:45,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:45,495 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 384 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:45,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1430 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:34:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2025-03-17 13:34:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 967. [2025-03-17 13:34:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 629 states have (on average 1.740858505564388) internal successors, (1095), 962 states have internal predecessors, (1095), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1101 transitions. [2025-03-17 13:34:45,521 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1101 transitions. Word has length 13 [2025-03-17 13:34:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:45,521 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1101 transitions. [2025-03-17 13:34:45,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1101 transitions. [2025-03-17 13:34:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-17 13:34:45,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:45,523 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:45,531 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 13:34:45,728 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 13:34:45,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:45,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1929815301, now seen corresponding path program 1 times [2025-03-17 13:34:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346490840] [2025-03-17 13:34:45,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:45,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:45,732 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 13:34:45,734 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 13:34:45,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 13:34:45,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 13:34:45,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:45,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:45,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:34:45,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:45,864 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 13:34:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:46,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:34:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:46,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346490840] [2025-03-17 13:34:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346490840] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:34:46,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:34:46,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:34:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325272057] [2025-03-17 13:34:46,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:34:46,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:34:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:46,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:34:46,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:34:46,395 INFO L87 Difference]: Start difference. First operand 967 states and 1101 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:34:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:50,388 INFO L93 Difference]: Finished difference Result 1386 states and 1621 transitions. [2025-03-17 13:34:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:34:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 32 [2025-03-17 13:34:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:50,394 INFO L225 Difference]: With dead ends: 1386 [2025-03-17 13:34:50,394 INFO L226 Difference]: Without dead ends: 1386 [2025-03-17 13:34:50,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:34:50,395 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 1577 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:50,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 1969 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-17 13:34:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2025-03-17 13:34:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1131. [2025-03-17 13:34:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 793 states have (on average 1.6733921815889028) internal successors, (1327), 1126 states have internal predecessors, (1327), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1333 transitions. [2025-03-17 13:34:50,416 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1333 transitions. Word has length 32 [2025-03-17 13:34:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:50,416 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1333 transitions. [2025-03-17 13:34:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:34:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1333 transitions. [2025-03-17 13:34:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-17 13:34:50,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:50,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:50,428 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 13:34:50,618 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 13:34:50,619 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:50,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 13052938, now seen corresponding path program 1 times [2025-03-17 13:34:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029106034] [2025-03-17 13:34:50,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:50,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:50,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:50,622 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 13:34:50,623 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 13:34:50,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 13:34:50,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 13:34:50,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:50,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:50,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:34:50,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:50,803 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 13:34:50,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:50,803 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029106034] [2025-03-17 13:34:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029106034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:50,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:34:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501657331] [2025-03-17 13:34:50,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:50,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:50,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:50,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:50,804 INFO L87 Difference]: Start difference. First operand 1131 states and 1333 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 13:34:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:50,874 INFO L93 Difference]: Finished difference Result 820 states and 897 transitions. [2025-03-17 13:34:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:34:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2025-03-17 13:34:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:50,876 INFO L225 Difference]: With dead ends: 820 [2025-03-17 13:34:50,876 INFO L226 Difference]: Without dead ends: 820 [2025-03-17 13:34:50,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:50,877 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 56 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:50,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2060 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:34:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2025-03-17 13:34:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 818. [2025-03-17 13:34:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 503 states have (on average 1.7673956262425448) internal successors, (889), 813 states have internal predecessors, (889), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 895 transitions. [2025-03-17 13:34:50,888 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 895 transitions. Word has length 47 [2025-03-17 13:34:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:50,888 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 895 transitions. [2025-03-17 13:34:50,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 13:34:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 895 transitions. [2025-03-17 13:34:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-17 13:34:50,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:50,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:50,900 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 13:34:51,091 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 13:34:51,092 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr336REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:51,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1944317118, now seen corresponding path program 1 times [2025-03-17 13:34:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:51,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028515781] [2025-03-17 13:34:51,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:51,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:51,096 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 13:34:51,097 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 13:34:51,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-17 13:34:51,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 13:34:51,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:51,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:51,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:34:51,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:51,262 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 13:34:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:34:51,635 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 13:34:51,648 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:34:51,648 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 13:34:51,651 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 13:34:51,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:51,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028515781] [2025-03-17 13:34:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028515781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:51,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:51,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:34:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295471513] [2025-03-17 13:34:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:51,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:34:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:51,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:34:51,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:51,652 INFO L87 Difference]: Start difference. First operand 818 states and 895 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 13:34:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:52,887 INFO L93 Difference]: Finished difference Result 780 states and 857 transitions. [2025-03-17 13:34:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:34:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2025-03-17 13:34:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:52,890 INFO L225 Difference]: With dead ends: 780 [2025-03-17 13:34:52,890 INFO L226 Difference]: Without dead ends: 780 [2025-03-17 13:34:52,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:34:52,891 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 844 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:52,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 594 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:34:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-03-17 13:34:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 743. [2025-03-17 13:34:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 466 states have (on average 1.667381974248927) internal successors, (777), 738 states have internal predecessors, (777), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 783 transitions. [2025-03-17 13:34:52,901 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 783 transitions. Word has length 55 [2025-03-17 13:34:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:52,901 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 783 transitions. [2025-03-17 13:34:52,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 13:34:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 783 transitions. [2025-03-17 13:34:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-17 13:34:52,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:52,908 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:52,921 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 13:34:53,109 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 13:34:53,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr329REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:53,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1515077909, now seen corresponding path program 1 times [2025-03-17 13:34:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:53,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727415222] [2025-03-17 13:34:53,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:53,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:53,120 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 13:34:53,129 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 13:34:53,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-17 13:34:53,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-17 13:34:53,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:53,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:53,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:34:53,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:53,302 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 13:34:53,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:34:53,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:34:53,336 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 13:34:53,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:53,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727415222] [2025-03-17 13:34:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727415222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:34:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194948498] [2025-03-17 13:34:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:53,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:34:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:53,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:34:53,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:53,339 INFO L87 Difference]: Start difference. First operand 743 states and 783 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:54,492 INFO L93 Difference]: Finished difference Result 742 states and 782 transitions. [2025-03-17 13:34:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:34:54,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-17 13:34:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:54,494 INFO L225 Difference]: With dead ends: 742 [2025-03-17 13:34:54,494 INFO L226 Difference]: Without dead ends: 742 [2025-03-17 13:34:54,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:34:54,494 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 2 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:54,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1714 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:34:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2025-03-17 13:34:54,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2025-03-17 13:34:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 466 states have (on average 1.6652360515021458) internal successors, (776), 737 states have internal predecessors, (776), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 782 transitions. [2025-03-17 13:34:54,503 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 782 transitions. Word has length 60 [2025-03-17 13:34:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:54,503 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 782 transitions. [2025-03-17 13:34:54,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 782 transitions. [2025-03-17 13:34:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-17 13:34:54,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:54,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:54,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 13:34:54,706 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 13:34:54,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:54,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1515077908, now seen corresponding path program 1 times [2025-03-17 13:34:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:54,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076646855] [2025-03-17 13:34:54,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:54,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:54,710 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 13:34:54,711 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 13:34:54,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-17 13:34:54,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-17 13:34:54,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:54,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:54,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 13:34:54,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:54,903 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 13:34:54,924 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 13 treesize of output 9 [2025-03-17 13:34:54,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:34:54,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:34:54,982 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 13:34:54,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:54,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076646855] [2025-03-17 13:34:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076646855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:54,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:54,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:34:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195254693] [2025-03-17 13:34:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:54,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:34:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:54,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:34:54,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:34:54,983 INFO L87 Difference]: Start difference. First operand 742 states and 782 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:56,440 INFO L93 Difference]: Finished difference Result 741 states and 781 transitions. [2025-03-17 13:34:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:34:56,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-17 13:34:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:56,442 INFO L225 Difference]: With dead ends: 741 [2025-03-17 13:34:56,442 INFO L226 Difference]: Without dead ends: 741 [2025-03-17 13:34:56,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:34:56,443 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 1 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:56,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1739 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:34:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-03-17 13:34:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2025-03-17 13:34:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 465 states have (on average 1.6666666666666667) internal successors, (775), 736 states have internal predecessors, (775), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:34:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 781 transitions. [2025-03-17 13:34:56,453 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 781 transitions. Word has length 60 [2025-03-17 13:34:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:56,454 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 781 transitions. [2025-03-17 13:34:56,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:34:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 781 transitions. [2025-03-17 13:34:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:34:56,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:56,454 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:56,466 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 13:34:56,655 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 13:34:56,655 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:56,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash 843564296, now seen corresponding path program 1 times [2025-03-17 13:34:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919347007] [2025-03-17 13:34:56,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:56,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:56,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:56,658 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 13:34:56,659 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 13:34:56,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 13:34:56,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:34:56,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:56,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:56,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:34:56,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:56,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:34:56,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:34:56,898 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 13:34:56,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:56,899 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919347007] [2025-03-17 13:34:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919347007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:56,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:34:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100989235] [2025-03-17 13:34:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:56,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:34:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:56,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:34:56,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:34:56,902 INFO L87 Difference]: Start difference. First operand 741 states and 781 transitions. Second operand has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:34:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:58,389 INFO L93 Difference]: Finished difference Result 753 states and 796 transitions. [2025-03-17 13:34:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:34:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2025-03-17 13:34:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:58,393 INFO L225 Difference]: With dead ends: 753 [2025-03-17 13:34:58,393 INFO L226 Difference]: Without dead ends: 753 [2025-03-17 13:34:58,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:34:58,394 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 6 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:58,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2400 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:34:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2025-03-17 13:34:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 747. [2025-03-17 13:34:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 470 states have (on average 1.6638297872340426) internal successors, (782), 741 states have internal predecessors, (782), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 13:34:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 791 transitions. [2025-03-17 13:34:58,406 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 791 transitions. Word has length 68 [2025-03-17 13:34:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:58,406 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 791 transitions. [2025-03-17 13:34:58,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:34:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 791 transitions. [2025-03-17 13:34:58,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:34:58,407 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:58,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:58,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 13:34:58,607 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 13:34:58,608 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:58,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 843564297, now seen corresponding path program 1 times [2025-03-17 13:34:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791343790] [2025-03-17 13:34:58,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:58,615 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 13:34:58,616 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 13:34:58,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 13:34:58,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:34:58,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:58,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:58,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:34:58,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:58,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:34:58,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:58,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791343790] [2025-03-17 13:34:58,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791343790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:34:58,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:34:58,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:34:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638359560] [2025-03-17 13:34:58,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:34:58,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:34:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:58,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:34:58,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:34:58,813 INFO L87 Difference]: Start difference. First operand 747 states and 791 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:34:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:58,849 INFO L93 Difference]: Finished difference Result 744 states and 785 transitions. [2025-03-17 13:34:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:34:58,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2025-03-17 13:34:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:58,852 INFO L225 Difference]: With dead ends: 744 [2025-03-17 13:34:58,853 INFO L226 Difference]: Without dead ends: 744 [2025-03-17 13:34:58,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 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 13:34:58,854 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 0 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:58,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2044 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:34:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-03-17 13:34:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2025-03-17 13:34:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 467 states have (on average 1.6659528907922911) internal successors, (778), 739 states have internal predecessors, (778), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:34:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 785 transitions. [2025-03-17 13:34:58,867 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 785 transitions. Word has length 68 [2025-03-17 13:34:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:58,868 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 785 transitions. [2025-03-17 13:34:58,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:34:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 785 transitions. [2025-03-17 13:34:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 13:34:58,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:58,868 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:58,879 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 13:34:59,069 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 13:34:59,069 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:59,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1426875910, now seen corresponding path program 1 times [2025-03-17 13:34:59,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:59,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247654167] [2025-03-17 13:34:59,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:34:59,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:59,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:59,072 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 13:34:59,073 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 13:34:59,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 13:34:59,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 13:34:59,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:34:59,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:34:59,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:34:59,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:34:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:59,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:34:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:34:59,307 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:34:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247654167] [2025-03-17 13:34:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247654167] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:34:59,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:34:59,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:34:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460931805] [2025-03-17 13:34:59,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:34:59,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:34:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:34:59,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:34:59,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:34:59,309 INFO L87 Difference]: Start difference. First operand 744 states and 785 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:34:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:34:59,406 INFO L93 Difference]: Finished difference Result 756 states and 802 transitions. [2025-03-17 13:34:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:34:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2025-03-17 13:34:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:34:59,409 INFO L225 Difference]: With dead ends: 756 [2025-03-17 13:34:59,409 INFO L226 Difference]: Without dead ends: 756 [2025-03-17 13:34:59,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:34:59,409 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 8 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:34:59,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2047 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:34:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2025-03-17 13:34:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 754. [2025-03-17 13:34:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 476 states have (on average 1.665966386554622) internal successors, (793), 748 states have internal predecessors, (793), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:34:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 800 transitions. [2025-03-17 13:34:59,418 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 800 transitions. Word has length 69 [2025-03-17 13:34:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:34:59,418 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 800 transitions. [2025-03-17 13:34:59,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:34:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 800 transitions. [2025-03-17 13:34:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:34:59,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:34:59,419 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:34:59,430 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 13:34:59,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:59,619 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:34:59,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:34:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -384929400, now seen corresponding path program 2 times [2025-03-17 13:34:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:34:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893639447] [2025-03-17 13:34:59,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:34:59,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:34:59,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:34:59,622 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:34:59,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:34:59,731 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-17 13:35:25,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:35:25,102 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:35:25,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:35:25,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 13:35:25,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:35:25,200 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:35:25,201 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 13:35:25,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:35:25,327 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:35:25,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:35:25,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-17 13:35:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:35:25,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:35:25,436 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:35:25,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-17 13:35:25,445 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2025-03-17 13:35:25,450 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:35:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893639447] [2025-03-17 13:35:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893639447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:35:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [435195313] [2025-03-17 13:35:25,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:35:25,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:35:25,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:35:25,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:35:25,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2025-03-17 13:35:25,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-17 13:35:26,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:35:26,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:35:26,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:35:26,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:35:26,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:35:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:26,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:35:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [435195313] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:35:26,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:35:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:35:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876598508] [2025-03-17 13:35:26,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:35:26,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:35:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:35:26,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:35:26,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-17 13:35:26,466 INFO L87 Difference]: Start difference. First operand 754 states and 800 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:35:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:35:32,102 INFO L93 Difference]: Finished difference Result 770 states and 822 transitions. [2025-03-17 13:35:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 13:35:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2025-03-17 13:35:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:35:32,104 INFO L225 Difference]: With dead ends: 770 [2025-03-17 13:35:32,104 INFO L226 Difference]: Without dead ends: 764 [2025-03-17 13:35:32,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=392, Invalid=2161, Unknown=1, NotChecked=98, Total=2652 [2025-03-17 13:35:32,105 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 466 mSDsluCounter, 5364 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 5817 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:35:32,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 5817 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-17 13:35:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2025-03-17 13:35:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2025-03-17 13:35:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 485 states have (on average 1.6556701030927834) internal successors, (803), 756 states have internal predecessors, (803), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:35:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 810 transitions. [2025-03-17 13:35:32,117 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 810 transitions. Word has length 72 [2025-03-17 13:35:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:35:32,117 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 810 transitions. [2025-03-17 13:35:32,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:35:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 810 transitions. [2025-03-17 13:35:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-17 13:35:32,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:35:32,118 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:35:32,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:35:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2025-03-17 13:35:32,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-17 13:35:32,518 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:35:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:35:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1799144375, now seen corresponding path program 1 times [2025-03-17 13:35:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:35:32,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426360309] [2025-03-17 13:35:32,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:35:32,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:35:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:35:32,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:35:32,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:35:32,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-17 13:35:32,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-17 13:35:32,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:35:32,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:35:32,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:35:32,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:35:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:32,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:35:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:33,254 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:35:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426360309] [2025-03-17 13:35:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426360309] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:35:33,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:35:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:35:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846333011] [2025-03-17 13:35:33,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:35:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:35:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:35:33,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:35:33,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:35:33,255 INFO L87 Difference]: Start difference. First operand 762 states and 810 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:35:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:35:34,412 INFO L93 Difference]: Finished difference Result 786 states and 849 transitions. [2025-03-17 13:35:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:35:34,413 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2025-03-17 13:35:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:35:34,415 INFO L225 Difference]: With dead ends: 786 [2025-03-17 13:35:34,415 INFO L226 Difference]: Without dead ends: 780 [2025-03-17 13:35:34,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:35:34,416 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 20 mSDsluCounter, 10190 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10873 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:35:34,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10873 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:35:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-03-17 13:35:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2025-03-17 13:35:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 503 states have (on average 1.6421471172962228) internal successors, (826), 774 states have internal predecessors, (826), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:35:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 833 transitions. [2025-03-17 13:35:34,425 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 833 transitions. Word has length 78 [2025-03-17 13:35:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:35:34,426 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 833 transitions. [2025-03-17 13:35:34,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:35:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 833 transitions. [2025-03-17 13:35:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-17 13:35:34,426 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:35:34,426 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:35:34,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-17 13:35:34,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:35:34,627 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:35:34,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:35:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 67084745, now seen corresponding path program 2 times [2025-03-17 13:35:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:35:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318188658] [2025-03-17 13:35:34,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:35:34,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:35:34,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:35:34,630 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 13:35:34,632 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 13:35:34,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes. [2025-03-17 13:35:46,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-03-17 13:35:46,950 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:35:46,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:35:46,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 13:35:46,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:35:47,038 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 13:35:47,051 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:35:47,051 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 13:35:47,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:35:47,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:35:47,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:35:47,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:35:47,505 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:35:47,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:35:47,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:35:47,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:35:47,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:35:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-17 13:35:47,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:35:47,892 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1428 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1428) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-03-17 13:35:47,896 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:35:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318188658] [2025-03-17 13:35:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318188658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:35:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1956796178] [2025-03-17 13:35:47,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:35:47,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:35:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:35:47,898 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:35:47,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2025-03-17 13:35:48,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes. [2025-03-17 13:35:48,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-03-17 13:35:48,590 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:35:48,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:35:48,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-17 13:35:48,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:35:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:49,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:35:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:35:51,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1956796178] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:35:51,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:35:51,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-17 13:35:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40488804] [2025-03-17 13:35:51,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:35:51,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 13:35:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:35:51,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 13:35:51,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-17 13:35:51,089 INFO L87 Difference]: Start difference. First operand 780 states and 833 transitions. Second operand has 58 states, 57 states have (on average 3.0) internal successors, (171), 58 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)