./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 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_SFH_test10-3.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 fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:38:09,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:38:09,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:38:09,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:38:09,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:38:09,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:38:09,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:38:09,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:38:09,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:38:09,189 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:38:09,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:38:09,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:38:09,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:38:09,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:38:09,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:38:09,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:38:09,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:38:09,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:38:09,192 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 -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2025-03-04 09:38:09,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:38:09,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:38:09,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:38:09,460 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:38:09,461 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:38:09,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2025-03-04 09:38:10,582 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6571abbf6/55280713c8cd4b40b450764194199b3a/FLAG5faa48e74 [2025-03-04 09:38:10,933 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:38:10,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2025-03-04 09:38:10,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6571abbf6/55280713c8cd4b40b450764194199b3a/FLAG5faa48e74 [2025-03-04 09:38:10,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6571abbf6/55280713c8cd4b40b450764194199b3a [2025-03-04 09:38:10,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:38:10,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:38:10,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:38:10,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:38:10,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:38:10,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:38:10" (1/1) ... [2025-03-04 09:38:10,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d116ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:10, skipping insertion in model container [2025-03-04 09:38:10,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:38:10" (1/1) ... [2025-03-04 09:38:11,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:38:11,306 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,339 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,342 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,349 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,353 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,385 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,398 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,419 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,419 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,421 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,421 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,430 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,430 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,434 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,434 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,454 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,454 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,456 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,457 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,466 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,466 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,467 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,467 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,468 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,469 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,470 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,471 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,471 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,474 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,474 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,474 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,475 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,477 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:11,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:38:11,498 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) [2025-03-04 09:38:11,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30faab05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:11, skipping insertion in model container [2025-03-04 09:38:11,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:38:11,503 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:38:11,504 INFO L158 Benchmark]: Toolchain (without parser) took 520.85ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 92.2MB in the end (delta: 29.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:38:11,505 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:38:11,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.11ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 92.2MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:38:11,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.11ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 92.2MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: 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_SFH_test10-3.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 fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:38:13,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:38:13,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:38:13,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:38:13,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:38:13,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:38:13,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:38:13,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:38:13,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:38:13,271 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:38:13,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:38:13,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:38:13,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:38:13,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:38:13,272 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:38:13,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:38:13,272 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:38:13,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:38:13,273 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:38:13,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:38:13,273 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:38:13,274 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:38:13,274 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:38:13,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:38:13,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:38:13,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:38:13,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:38:13,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:38:13,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:38:13,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:38:13,276 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 -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2025-03-04 09:38:13,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:38:13,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:38:13,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:38:13,506 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:38:13,507 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:38:13,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2025-03-04 09:38:14,683 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4505620bf/56a3196229c44235a705a3e0af809003/FLAG0034f3948 [2025-03-04 09:38:15,006 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:38:15,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2025-03-04 09:38:15,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4505620bf/56a3196229c44235a705a3e0af809003/FLAG0034f3948 [2025-03-04 09:38:15,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4505620bf/56a3196229c44235a705a3e0af809003 [2025-03-04 09:38:15,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:38:15,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:38:15,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:38:15,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:38:15,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:38:15,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:38:15" (1/1) ... [2025-03-04 09:38:15,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e2e196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:15, skipping insertion in model container [2025-03-04 09:38:15,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:38:15" (1/1) ... [2025-03-04 09:38:15,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:38:15,586 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,613 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,616 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,626 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,653 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,655 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,657 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,662 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,693 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,693 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,695 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,697 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,711 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,711 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,713 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,713 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,729 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,729 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,732 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,732 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,742 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,742 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,750 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,752 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,753 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,753 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,753 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:38:15,780 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:38:15,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:38:15,816 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,824 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,829 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,847 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,865 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,868 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,876 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,876 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,877 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,887 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,888 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,890 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,890 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,897 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,898 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,899 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,900 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,903 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,906 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,907 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,907 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,907 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:38:15,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:38:15,918 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:38:16,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:38:16,046 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:38:16,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16 WrapperNode [2025-03-04 09:38:16,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:38:16,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:38:16,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:38:16,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:38:16,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,148 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-03-04 09:38:16,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:38:16,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:38:16,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:38:16,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:38:16,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,324 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2025-03-04 09:38:16,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,387 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:38:16,424 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:38:16,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:38:16,424 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:38:16,426 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (1/1) ... [2025-03-04 09:38:16,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:38:16,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:16,451 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) [2025-03-04 09:38:16,454 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 [2025-03-04 09:38:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:38:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:38:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:38:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-04 09:38:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:38:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:38:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:38:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:38:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:38:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:38:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:38:16,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:38:16,701 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:38:16,702 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:38:22,252 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:38:22,455 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2025-03-04 09:38:22,456 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:38:22,489 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:38:22,489 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:38:22,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:38:22 BoogieIcfgContainer [2025-03-04 09:38:22,489 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:38:22,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:38:22,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:38:22,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:38:22,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:38:15" (1/3) ... [2025-03-04 09:38:22,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae62954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:38:22, skipping insertion in model container [2025-03-04 09:38:22,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:38:16" (2/3) ... [2025-03-04 09:38:22,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae62954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:38:22, skipping insertion in model container [2025-03-04 09:38:22,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:38:22" (3/3) ... [2025-03-04 09:38:22,500 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-3.i [2025-03-04 09:38:22,512 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:38:22,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test10-3.i that has 6 procedures, 2451 locations, 1 initial locations, 87 loop locations, and 1189 error locations. [2025-03-04 09:38:22,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:38:22,582 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;@3199d0ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:38:22,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-03-04 09:38:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-04 09:38:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:38:22,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:22,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:38:22,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:22,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:22,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2772423, now seen corresponding path program 1 times [2025-03-04 09:38:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:22,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500245728] [2025-03-04 09:38:22,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:22,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:22,614 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) [2025-03-04 09:38:22,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:38:22,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:38:22,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:38:22,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:22,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:22,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:22,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:22,824 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 [2025-03-04 09:38:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:22,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:22,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500245728] [2025-03-04 09:38:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500245728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:22,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761428604] [2025-03-04 09:38:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:22,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:22,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:22,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:22,863 INFO L87 Difference]: Start difference. First operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:25,599 INFO L93 Difference]: Finished difference Result 3272 states and 3472 transitions. [2025-03-04 09:38:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:38:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:25,617 INFO L225 Difference]: With dead ends: 3272 [2025-03-04 09:38:25,617 INFO L226 Difference]: Without dead ends: 3270 [2025-03-04 09:38:25,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:25,621 INFO L435 NwaCegarLoop]: 1660 mSDtfsCounter, 2305 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:25,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 2226 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:38:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2025-03-04 09:38:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2583. [2025-03-04 09:38:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1410 states have (on average 2.051063829787234) internal successors, (2892), 2567 states have internal predecessors, (2892), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-04 09:38:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2924 transitions. [2025-03-04 09:38:25,721 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2924 transitions. Word has length 3 [2025-03-04 09:38:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:25,721 INFO L471 AbstractCegarLoop]: Abstraction has 2583 states and 2924 transitions. [2025-03-04 09:38:25,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2924 transitions. [2025-03-04 09:38:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:38:25,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:25,722 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:38:25,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:38:25,922 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 [2025-03-04 09:38:25,923 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:25,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2772424, now seen corresponding path program 1 times [2025-03-04 09:38:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309792086] [2025-03-04 09:38:25,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:25,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:25,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:25,926 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) [2025-03-04 09:38:25,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:38:26,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:38:26,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:38:26,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:26,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:26,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:26,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:26,075 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 [2025-03-04 09:38:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:26,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:26,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309792086] [2025-03-04 09:38:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309792086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:26,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:26,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393290936] [2025-03-04 09:38:26,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:26,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:26,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:26,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:26,085 INFO L87 Difference]: Start difference. First operand 2583 states and 2924 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:29,347 INFO L93 Difference]: Finished difference Result 3376 states and 3797 transitions. [2025-03-04 09:38:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:38:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:29,355 INFO L225 Difference]: With dead ends: 3376 [2025-03-04 09:38:29,355 INFO L226 Difference]: Without dead ends: 3376 [2025-03-04 09:38:29,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:29,356 INFO L435 NwaCegarLoop]: 2211 mSDtfsCounter, 867 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:29,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3599 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-04 09:38:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2025-03-04 09:38:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3048. [2025-03-04 09:38:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1873 states have (on average 2.006940736785905) internal successors, (3759), 3029 states have internal predecessors, (3759), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-04 09:38:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3797 transitions. [2025-03-04 09:38:29,397 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3797 transitions. Word has length 3 [2025-03-04 09:38:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:29,397 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 3797 transitions. [2025-03-04 09:38:29,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3797 transitions. [2025-03-04 09:38:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:38:29,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:29,397 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:29,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:38:29,598 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 [2025-03-04 09:38:29,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:29,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash 674207459, now seen corresponding path program 1 times [2025-03-04 09:38:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:29,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136010177] [2025-03-04 09:38:29,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:29,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:29,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:29,601 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) [2025-03-04 09:38:29,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:38:29,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:38:29,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:38:29,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:29,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:29,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:38:29,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:29,759 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 [2025-03-04 09:38:29,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:38:29,810 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 [2025-03-04 09:38:29,820 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:29,820 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 [2025-03-04 09:38:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:29,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:29,836 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136010177] [2025-03-04 09:38:29,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136010177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:29,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:29,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:29,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648458756] [2025-03-04 09:38:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:29,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:29,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:29,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:29,837 INFO L87 Difference]: Start difference. First operand 3048 states and 3797 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-03-04 09:38:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:35,916 INFO L93 Difference]: Finished difference Result 5297 states and 6196 transitions. [2025-03-04 09:38:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2025-03-04 09:38:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:35,929 INFO L225 Difference]: With dead ends: 5297 [2025-03-04 09:38:35,931 INFO L226 Difference]: Without dead ends: 5297 [2025-03-04 09:38:35,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:35,932 INFO L435 NwaCegarLoop]: 1166 mSDtfsCounter, 2368 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:35,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 3351 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2025-03-04 09:38:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2025-03-04 09:38:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 3760. [2025-03-04 09:38:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2585 states have (on average 2.0336557059961313) internal successors, (5257), 3735 states have internal predecessors, (5257), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5307 transitions. [2025-03-04 09:38:35,988 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5307 transitions. Word has length 7 [2025-03-04 09:38:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:35,989 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 5307 transitions. [2025-03-04 09:38:35,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-03-04 09:38:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5307 transitions. [2025-03-04 09:38:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:38:35,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:35,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:35,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 09:38:36,190 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 [2025-03-04 09:38:36,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -574402570, now seen corresponding path program 1 times [2025-03-04 09:38:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485824202] [2025-03-04 09:38:36,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:36,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:36,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:36,195 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) [2025-03-04 09:38:36,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:38:36,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:38:36,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:38:36,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:36,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:36,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:36,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:36,356 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 [2025-03-04 09:38:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:36,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:36,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485824202] [2025-03-04 09:38:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485824202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:36,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707280386] [2025-03-04 09:38:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:36,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:36,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:36,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:36,369 INFO L87 Difference]: Start difference. First operand 3760 states and 5307 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:38,587 INFO L93 Difference]: Finished difference Result 4464 states and 5969 transitions. [2025-03-04 09:38:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:38:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:38,597 INFO L225 Difference]: With dead ends: 4464 [2025-03-04 09:38:38,597 INFO L226 Difference]: Without dead ends: 4464 [2025-03-04 09:38:38,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:38,598 INFO L435 NwaCegarLoop]: 2389 mSDtfsCounter, 1906 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:38,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3149 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-04 09:38:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2025-03-04 09:38:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3668. [2025-03-04 09:38:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2585 states have (on average 1.9504835589941973) internal successors, (5042), 3643 states have internal predecessors, (5042), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5092 transitions. [2025-03-04 09:38:38,642 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5092 transitions. Word has length 8 [2025-03-04 09:38:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:38,643 INFO L471 AbstractCegarLoop]: Abstraction has 3668 states and 5092 transitions. [2025-03-04 09:38:38,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5092 transitions. [2025-03-04 09:38:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:38:38,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:38,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:38,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 09:38:38,844 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 [2025-03-04 09:38:38,844 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:38,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash -574402569, now seen corresponding path program 1 times [2025-03-04 09:38:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177067794] [2025-03-04 09:38:38,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:38,846 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) [2025-03-04 09:38:38,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:38:38,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:38:38,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:38:38,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:38,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:38,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:38,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:38,984 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 [2025-03-04 09:38:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:39,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:39,000 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:39,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177067794] [2025-03-04 09:38:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177067794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:39,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160717793] [2025-03-04 09:38:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:39,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:39,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:39,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:39,001 INFO L87 Difference]: Start difference. First operand 3668 states and 5092 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:42,093 INFO L93 Difference]: Finished difference Result 5453 states and 7532 transitions. [2025-03-04 09:38:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:38:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:42,103 INFO L225 Difference]: With dead ends: 5453 [2025-03-04 09:38:42,103 INFO L226 Difference]: Without dead ends: 5453 [2025-03-04 09:38:42,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:42,104 INFO L435 NwaCegarLoop]: 2748 mSDtfsCounter, 1411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:42,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3938 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-04 09:38:42,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2025-03-04 09:38:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4008. [2025-03-04 09:38:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2935 states have (on average 1.9345826235093697) internal successors, (5678), 3983 states have internal predecessors, (5678), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5728 transitions. [2025-03-04 09:38:42,149 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5728 transitions. Word has length 8 [2025-03-04 09:38:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:42,150 INFO L471 AbstractCegarLoop]: Abstraction has 4008 states and 5728 transitions. [2025-03-04 09:38:42,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5728 transitions. [2025-03-04 09:38:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:38:42,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:42,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:42,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:38:42,350 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 [2025-03-04 09:38:42,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:42,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash 761747980, now seen corresponding path program 1 times [2025-03-04 09:38:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060244280] [2025-03-04 09:38:42,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:42,353 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) [2025-03-04 09:38:42,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:38:42,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:38:42,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:38:42,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:42,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:42,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:42,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:42,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:42,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060244280] [2025-03-04 09:38:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060244280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:42,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:42,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591643076] [2025-03-04 09:38:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:42,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:42,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:42,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:42,514 INFO L87 Difference]: Start difference. First operand 4008 states and 5728 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-03-04 09:38:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:45,530 INFO L93 Difference]: Finished difference Result 4643 states and 6221 transitions. [2025-03-04 09:38:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-03-04 09:38:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:45,546 INFO L225 Difference]: With dead ends: 4643 [2025-03-04 09:38:45,546 INFO L226 Difference]: Without dead ends: 4643 [2025-03-04 09:38:45,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:45,547 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 2268 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:45,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3540 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-04 09:38:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2025-03-04 09:38:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 3985. [2025-03-04 09:38:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 2935 states have (on average 1.918909710391823) internal successors, (5632), 3960 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5682 transitions. [2025-03-04 09:38:45,591 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5682 transitions. Word has length 10 [2025-03-04 09:38:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:45,591 INFO L471 AbstractCegarLoop]: Abstraction has 3985 states and 5682 transitions. [2025-03-04 09:38:45,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-03-04 09:38:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5682 transitions. [2025-03-04 09:38:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:38:45,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:45,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:45,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:38:45,792 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 [2025-03-04 09:38:45,793 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:45,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 761747981, now seen corresponding path program 1 times [2025-03-04 09:38:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070668368] [2025-03-04 09:38:45,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:45,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:45,795 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) [2025-03-04 09:38:45,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:38:45,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:38:45,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:38:45,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:45,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:45,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:38:45,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:45,932 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 [2025-03-04 09:38:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:46,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:46,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070668368] [2025-03-04 09:38:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070668368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200691734] [2025-03-04 09:38:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:46,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:46,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:46,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:46,012 INFO L87 Difference]: Start difference. First operand 3985 states and 5682 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-03-04 09:38:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:49,590 INFO L93 Difference]: Finished difference Result 4726 states and 6495 transitions. [2025-03-04 09:38:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:49,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-03-04 09:38:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:49,599 INFO L225 Difference]: With dead ends: 4726 [2025-03-04 09:38:49,599 INFO L226 Difference]: Without dead ends: 4726 [2025-03-04 09:38:49,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:49,600 INFO L435 NwaCegarLoop]: 2116 mSDtfsCounter, 848 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:49,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4659 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 09:38:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2025-03-04 09:38:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4032. [2025-03-04 09:38:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 2982 states have (on average 1.90878604963112) internal successors, (5692), 4007 states have internal predecessors, (5692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5742 transitions. [2025-03-04 09:38:49,648 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5742 transitions. Word has length 10 [2025-03-04 09:38:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:49,648 INFO L471 AbstractCegarLoop]: Abstraction has 4032 states and 5742 transitions. [2025-03-04 09:38:49,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-03-04 09:38:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5742 transitions. [2025-03-04 09:38:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:38:49,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:49,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:49,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:38:49,849 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 [2025-03-04 09:38:49,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:49,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2139307635, now seen corresponding path program 1 times [2025-03-04 09:38:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058905618] [2025-03-04 09:38:49,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:49,852 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) [2025-03-04 09:38:49,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:38:49,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:38:49,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:38:49,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:49,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:49,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:50,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:50,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:50,017 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058905618] [2025-03-04 09:38:50,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058905618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:50,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:50,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:50,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575300800] [2025-03-04 09:38:50,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:50,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:50,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:50,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:50,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:50,018 INFO L87 Difference]: Start difference. First operand 4032 states and 5742 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:50,091 INFO L93 Difference]: Finished difference Result 3954 states and 5621 transitions. [2025-03-04 09:38:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:38:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:38:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:50,102 INFO L225 Difference]: With dead ends: 3954 [2025-03-04 09:38:50,102 INFO L226 Difference]: Without dead ends: 3954 [2025-03-04 09:38:50,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:50,103 INFO L435 NwaCegarLoop]: 2355 mSDtfsCounter, 45 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:50,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7042 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:38:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2025-03-04 09:38:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3948. [2025-03-04 09:38:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2917 states have (on average 1.9077819677751113) internal successors, (5565), 3923 states have internal predecessors, (5565), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5615 transitions. [2025-03-04 09:38:50,150 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5615 transitions. Word has length 11 [2025-03-04 09:38:50,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:50,150 INFO L471 AbstractCegarLoop]: Abstraction has 3948 states and 5615 transitions. [2025-03-04 09:38:50,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5615 transitions. [2025-03-04 09:38:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:38:50,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:50,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:50,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:38:50,352 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 [2025-03-04 09:38:50,353 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:50,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -737712107, now seen corresponding path program 1 times [2025-03-04 09:38:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:50,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331332856] [2025-03-04 09:38:50,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:50,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:50,355 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) [2025-03-04 09:38:50,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:38:50,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:38:50,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:38:50,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:50,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:50,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:50,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:50,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:50,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:50,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331332856] [2025-03-04 09:38:50,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331332856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:50,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267486962] [2025-03-04 09:38:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:50,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:50,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:50,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:50,553 INFO L87 Difference]: Start difference. First operand 3948 states and 5615 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:53,490 INFO L93 Difference]: Finished difference Result 4623 states and 6335 transitions. [2025-03-04 09:38:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:53,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-04 09:38:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:53,498 INFO L225 Difference]: With dead ends: 4623 [2025-03-04 09:38:53,498 INFO L226 Difference]: Without dead ends: 4623 [2025-03-04 09:38:53,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:53,499 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1871 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:53,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4618 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-04 09:38:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2025-03-04 09:38:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 3925. [2025-03-04 09:38:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 2917 states have (on average 1.8920123414466918) internal successors, (5519), 3900 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5569 transitions. [2025-03-04 09:38:53,544 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5569 transitions. Word has length 19 [2025-03-04 09:38:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:53,544 INFO L471 AbstractCegarLoop]: Abstraction has 3925 states and 5569 transitions. [2025-03-04 09:38:53,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5569 transitions. [2025-03-04 09:38:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:38:53,545 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:53,545 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:53,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:38:53,745 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 [2025-03-04 09:38:53,745 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:53,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -737712106, now seen corresponding path program 1 times [2025-03-04 09:38:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969818827] [2025-03-04 09:38:53,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:53,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:53,748 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) [2025-03-04 09:38:53,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:38:53,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:38:53,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:38:53,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:53,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:53,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:38:53,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:53,904 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 [2025-03-04 09:38:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:53,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:53,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:53,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969818827] [2025-03-04 09:38:53,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969818827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:53,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838885138] [2025-03-04 09:38:53,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:53,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:53,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:53,957 INFO L87 Difference]: Start difference. First operand 3925 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:57,867 INFO L93 Difference]: Finished difference Result 5406 states and 7375 transitions. [2025-03-04 09:38:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:57,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-04 09:38:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:57,875 INFO L225 Difference]: With dead ends: 5406 [2025-03-04 09:38:57,875 INFO L226 Difference]: Without dead ends: 5406 [2025-03-04 09:38:57,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:57,875 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1447 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:57,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5455 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-04 09:38:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2025-03-04 09:38:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4039. [2025-03-04 09:38:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4039 states, 3031 states have (on average 1.8663807324315407) internal successors, (5657), 4014 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:38:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 5707 transitions. [2025-03-04 09:38:57,912 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 5707 transitions. Word has length 19 [2025-03-04 09:38:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:57,912 INFO L471 AbstractCegarLoop]: Abstraction has 4039 states and 5707 transitions. [2025-03-04 09:38:57,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 5707 transitions. [2025-03-04 09:38:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:38:57,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:57,913 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:57,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:38:58,113 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 [2025-03-04 09:38:58,113 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:38:58,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash -756582698, now seen corresponding path program 1 times [2025-03-04 09:38:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:58,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943053354] [2025-03-04 09:38:58,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:58,117 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) [2025-03-04 09:38:58,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:38:58,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:38:58,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:38:58,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:58,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:58,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:58,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:58,284 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 [2025-03-04 09:38:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:58,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:58,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943053354] [2025-03-04 09:38:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943053354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:58,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:58,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998427159] [2025-03-04 09:38:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:58,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:58,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:58,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:58,321 INFO L87 Difference]: Start difference. First operand 4039 states and 5707 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:01,003 INFO L93 Difference]: Finished difference Result 4730 states and 6351 transitions. [2025-03-04 09:39:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:39:01,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-04 09:39:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:01,009 INFO L225 Difference]: With dead ends: 4730 [2025-03-04 09:39:01,009 INFO L226 Difference]: Without dead ends: 4730 [2025-03-04 09:39:01,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:01,011 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1846 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:01,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4618 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:39:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2025-03-04 09:39:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4016. [2025-03-04 09:39:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 3031 states have (on average 1.8208512042230287) internal successors, (5519), 3991 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:39:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5569 transitions. [2025-03-04 09:39:01,050 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5569 transitions. Word has length 19 [2025-03-04 09:39:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:01,050 INFO L471 AbstractCegarLoop]: Abstraction has 4016 states and 5569 transitions. [2025-03-04 09:39:01,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5569 transitions. [2025-03-04 09:39:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:39:01,052 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:01,053 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:01,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 09:39:01,258 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 [2025-03-04 09:39:01,258 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:01,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -756582697, now seen corresponding path program 1 times [2025-03-04 09:39:01,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:01,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426389232] [2025-03-04 09:39:01,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:01,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:01,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:01,260 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) [2025-03-04 09:39:01,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:39:01,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:39:01,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:39:01,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:01,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:01,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:39:01,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:01,448 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 [2025-03-04 09:39:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:01,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:01,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426389232] [2025-03-04 09:39:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426389232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:39:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499428901] [2025-03-04 09:39:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:01,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:01,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:01,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:01,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:01,506 INFO L87 Difference]: Start difference. First operand 4016 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:05,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:05,433 INFO L93 Difference]: Finished difference Result 5474 states and 7375 transitions. [2025-03-04 09:39:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:39:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-04 09:39:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:05,440 INFO L225 Difference]: With dead ends: 5474 [2025-03-04 09:39:05,440 INFO L226 Difference]: Without dead ends: 5474 [2025-03-04 09:39:05,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:05,441 INFO L435 NwaCegarLoop]: 2571 mSDtfsCounter, 1424 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:05,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5393 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-04 09:39:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-04 09:39:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 4130. [2025-03-04 09:39:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3145 states have (on average 1.7987281399046104) internal successors, (5657), 4105 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:39:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5707 transitions. [2025-03-04 09:39:05,478 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5707 transitions. Word has length 19 [2025-03-04 09:39:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:05,479 INFO L471 AbstractCegarLoop]: Abstraction has 4130 states and 5707 transitions. [2025-03-04 09:39:05,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5707 transitions. [2025-03-04 09:39:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:39:05,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:05,483 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:05,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 09:39:05,683 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 [2025-03-04 09:39:05,684 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:05,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2143448273, now seen corresponding path program 1 times [2025-03-04 09:39:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417729531] [2025-03-04 09:39:05,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:05,687 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) [2025-03-04 09:39:05,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:39:05,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:39:05,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:39:05,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:05,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:05,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:39:05,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:05,903 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 [2025-03-04 09:39:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:06,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:39:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:06,329 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417729531] [2025-03-04 09:39:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417729531] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:39:06,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:39:06,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:39:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361062310] [2025-03-04 09:39:06,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:39:06,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:39:06,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:06,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:39:06,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:39:06,330 INFO L87 Difference]: Start difference. First operand 4130 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:39:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:17,949 INFO L93 Difference]: Finished difference Result 5882 states and 7945 transitions. [2025-03-04 09:39:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:39:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-04 09:39:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:17,957 INFO L225 Difference]: With dead ends: 5882 [2025-03-04 09:39:17,957 INFO L226 Difference]: Without dead ends: 5882 [2025-03-04 09:39:17,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:39:17,958 INFO L435 NwaCegarLoop]: 2565 mSDtfsCounter, 2214 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 5621 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:17,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 8284 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5621 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2025-03-04 09:39:17,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-04 09:39:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 4294. [2025-03-04 09:39:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3309 states have (on average 1.7796917497733453) internal successors, (5889), 4269 states have internal predecessors, (5889), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:39:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 5939 transitions. [2025-03-04 09:39:17,992 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 5939 transitions. Word has length 38 [2025-03-04 09:39:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:17,992 INFO L471 AbstractCegarLoop]: Abstraction has 4294 states and 5939 transitions. [2025-03-04 09:39:17,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:39:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 5939 transitions. [2025-03-04 09:39:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:39:17,993 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:17,993 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:18,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:39:18,194 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 [2025-03-04 09:39:18,194 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:18,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1068678835, now seen corresponding path program 1 times [2025-03-04 09:39:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218540508] [2025-03-04 09:39:18,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:18,197 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) [2025-03-04 09:39:18,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:39:18,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:39:18,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:39:18,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:18,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:18,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:39:18,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:18,415 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 [2025-03-04 09:39:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:18,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:39:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:18,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:18,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218540508] [2025-03-04 09:39:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218540508] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:39:18,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:39:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:39:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399913248] [2025-03-04 09:39:18,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:39:18,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:39:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:18,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:39:18,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:39:18,876 INFO L87 Difference]: Start difference. First operand 4294 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:39:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:29,257 INFO L93 Difference]: Finished difference Result 6046 states and 8177 transitions. [2025-03-04 09:39:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:39:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-04 09:39:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:29,263 INFO L225 Difference]: With dead ends: 6046 [2025-03-04 09:39:29,263 INFO L226 Difference]: Without dead ends: 6046 [2025-03-04 09:39:29,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:39:29,264 INFO L435 NwaCegarLoop]: 2572 mSDtfsCounter, 2174 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 8289 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:29,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 8289 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2025-03-04 09:39:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2025-03-04 09:39:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 4458. [2025-03-04 09:39:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3473 states have (on average 1.7624532104808524) internal successors, (6121), 4433 states have internal predecessors, (6121), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:39:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6171 transitions. [2025-03-04 09:39:29,306 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6171 transitions. Word has length 38 [2025-03-04 09:39:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:29,306 INFO L471 AbstractCegarLoop]: Abstraction has 4458 states and 6171 transitions. [2025-03-04 09:39:29,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:39:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6171 transitions. [2025-03-04 09:39:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-04 09:39:29,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:29,308 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] [2025-03-04 09:39:29,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 09:39:29,508 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 [2025-03-04 09:39:29,508 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:29,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1642370794, now seen corresponding path program 1 times [2025-03-04 09:39:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:29,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199366713] [2025-03-04 09:39:29,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:29,512 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) [2025-03-04 09:39:29,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:39:29,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 09:39:29,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 09:39:29,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:29,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:29,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:39:29,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:29,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:29,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:29,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199366713] [2025-03-04 09:39:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199366713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:29,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:39:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652623606] [2025-03-04 09:39:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:29,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:39:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:29,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:39:29,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:39:29,831 INFO L87 Difference]: Start difference. First operand 4458 states and 6171 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-04 09:39:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:30,095 INFO L93 Difference]: Finished difference Result 6650 states and 8890 transitions. [2025-03-04 09:39:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:39:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2025-03-04 09:39:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:30,101 INFO L225 Difference]: With dead ends: 6650 [2025-03-04 09:39:30,101 INFO L226 Difference]: Without dead ends: 6650 [2025-03-04 09:39:30,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:39:30,102 INFO L435 NwaCegarLoop]: 2399 mSDtfsCounter, 1612 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:30,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 4627 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:39:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2025-03-04 09:39:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 5829. [2025-03-04 09:39:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4837 states have (on average 1.7436427537729997) internal successors, (8434), 5794 states have internal predecessors, (8434), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:39:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8504 transitions. [2025-03-04 09:39:30,153 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8504 transitions. Word has length 39 [2025-03-04 09:39:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:30,153 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 8504 transitions. [2025-03-04 09:39:30,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-04 09:39:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8504 transitions. [2025-03-04 09:39:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:39:30,154 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:30,154 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] [2025-03-04 09:39:30,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:39:30,359 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 [2025-03-04 09:39:30,359 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:30,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:30,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1867561523, now seen corresponding path program 1 times [2025-03-04 09:39:30,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:30,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726544627] [2025-03-04 09:39:30,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:30,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:30,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:30,362 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) [2025-03-04 09:39:30,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:39:30,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:39:30,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:39:30,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:30,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:30,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:39:30,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:30,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:30,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726544627] [2025-03-04 09:39:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726544627] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:30,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:30,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808754312] [2025-03-04 09:39:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:30,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:30,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:30,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:30,615 INFO L87 Difference]: Start difference. First operand 5829 states and 8504 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:30,668 INFO L93 Difference]: Finished difference Result 5811 states and 8470 transitions. [2025-03-04 09:39:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:39:30,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-04 09:39:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:30,674 INFO L225 Difference]: With dead ends: 5811 [2025-03-04 09:39:30,675 INFO L226 Difference]: Without dead ends: 5811 [2025-03-04 09:39:30,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:30,676 INFO L435 NwaCegarLoop]: 2311 mSDtfsCounter, 27 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:30,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6896 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:39:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2025-03-04 09:39:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2025-03-04 09:39:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4819 states have (on average 1.7431002282631252) internal successors, (8400), 5776 states have internal predecessors, (8400), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:39:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 8470 transitions. [2025-03-04 09:39:30,730 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 8470 transitions. Word has length 50 [2025-03-04 09:39:30,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:30,731 INFO L471 AbstractCegarLoop]: Abstraction has 5811 states and 8470 transitions. [2025-03-04 09:39:30,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 8470 transitions. [2025-03-04 09:39:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:39:30,731 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:30,731 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] [2025-03-04 09:39:30,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 09:39:30,932 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 [2025-03-04 09:39:30,932 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:30,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1212270441, now seen corresponding path program 1 times [2025-03-04 09:39:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:30,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524552007] [2025-03-04 09:39:30,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:30,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:30,934 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:30,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:39:31,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:39:31,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:39:31,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:31,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:31,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:39:31,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:31,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:31,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524552007] [2025-03-04 09:39:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524552007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:39:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083354385] [2025-03-04 09:39:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:31,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:39:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:31,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:39:31,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:39:31,277 INFO L87 Difference]: Start difference. First operand 5811 states and 8470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-04 09:39:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:31,406 INFO L93 Difference]: Finished difference Result 8193 states and 11522 transitions. [2025-03-04 09:39:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:39:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2025-03-04 09:39:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:31,416 INFO L225 Difference]: With dead ends: 8193 [2025-03-04 09:39:31,416 INFO L226 Difference]: Without dead ends: 8193 [2025-03-04 09:39:31,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:39:31,417 INFO L435 NwaCegarLoop]: 2407 mSDtfsCounter, 1503 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:31,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:39:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2025-03-04 09:39:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 7379. [2025-03-04 09:39:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 6378 states have (on average 1.7253057384760113) internal successors, (11004), 7332 states have internal predecessors, (11004), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:39:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 11098 transitions. [2025-03-04 09:39:31,486 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 11098 transitions. Word has length 50 [2025-03-04 09:39:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:31,487 INFO L471 AbstractCegarLoop]: Abstraction has 7379 states and 11098 transitions. [2025-03-04 09:39:31,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-04 09:39:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 11098 transitions. [2025-03-04 09:39:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:39:31,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:31,488 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:31,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 09:39:31,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:31,688 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:31,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -871556419, now seen corresponding path program 1 times [2025-03-04 09:39:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971624396] [2025-03-04 09:39:31,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:31,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:31,691 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) [2025-03-04 09:39:31,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:39:31,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:39:31,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:39:31,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:31,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:31,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:39:31,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:31,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:31,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:31,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971624396] [2025-03-04 09:39:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971624396] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:31,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:31,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699753821] [2025-03-04 09:39:31,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:31,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:31,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:31,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:31,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:31,993 INFO L87 Difference]: Start difference. First operand 7379 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:32,066 INFO L93 Difference]: Finished difference Result 6780 states and 10226 transitions. [2025-03-04 09:39:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:39:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-04 09:39:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:32,074 INFO L225 Difference]: With dead ends: 6780 [2025-03-04 09:39:32,074 INFO L226 Difference]: Without dead ends: 6780 [2025-03-04 09:39:32,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:32,075 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 56 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:32,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6722 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:39:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2025-03-04 09:39:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6776. [2025-03-04 09:39:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 5798 states have (on average 1.7468092445670922) internal successors, (10128), 6729 states have internal predecessors, (10128), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:39:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 10222 transitions. [2025-03-04 09:39:32,128 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 10222 transitions. Word has length 53 [2025-03-04 09:39:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:32,128 INFO L471 AbstractCegarLoop]: Abstraction has 6776 states and 10222 transitions. [2025-03-04 09:39:32,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 10222 transitions. [2025-03-04 09:39:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:39:32,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:32,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:32,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:39:32,329 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 [2025-03-04 09:39:32,330 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:32,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1631739170, now seen corresponding path program 1 times [2025-03-04 09:39:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719366384] [2025-03-04 09:39:32,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:32,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:32,332 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) [2025-03-04 09:39:32,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:39:32,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:39:32,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:39:32,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:32,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:32,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:39:32,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:32,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:32,565 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719366384] [2025-03-04 09:39:32,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719366384] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:32,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024208947] [2025-03-04 09:39:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:32,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:32,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:32,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:32,566 INFO L87 Difference]: Start difference. First operand 6776 states and 10222 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:32,621 INFO L93 Difference]: Finished difference Result 6158 states and 9218 transitions. [2025-03-04 09:39:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:39:32,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-04 09:39:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:32,626 INFO L225 Difference]: With dead ends: 6158 [2025-03-04 09:39:32,626 INFO L226 Difference]: Without dead ends: 6158 [2025-03-04 09:39:32,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:32,627 INFO L435 NwaCegarLoop]: 2230 mSDtfsCounter, 76 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:32,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:39:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2025-03-04 09:39:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6148. [2025-03-04 09:39:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5182 states have (on average 1.7587803936703976) internal successors, (9114), 6101 states have internal predecessors, (9114), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:39:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9208 transitions. [2025-03-04 09:39:32,664 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9208 transitions. Word has length 53 [2025-03-04 09:39:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:32,664 INFO L471 AbstractCegarLoop]: Abstraction has 6148 states and 9208 transitions. [2025-03-04 09:39:32,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9208 transitions. [2025-03-04 09:39:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:39:32,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:32,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:32,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:39:32,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:32,865 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:32,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1608287493, now seen corresponding path program 1 times [2025-03-04 09:39:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451561094] [2025-03-04 09:39:32,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:32,868 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:32,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:39:33,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:39:33,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:39:33,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:33,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:33,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:39:33,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:33,080 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:39:33,081 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:39:33,081 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:39:33,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-04 09:39:33,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:39:33,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-04 09:39:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:33,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:33,119 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451561094] [2025-03-04 09:39:33,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451561094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:33,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902448618] [2025-03-04 09:39:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:33,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:33,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:33,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:33,119 INFO L87 Difference]: Start difference. First operand 6148 states and 9208 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:33,511 INFO L93 Difference]: Finished difference Result 6996 states and 10212 transitions. [2025-03-04 09:39:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:39:33,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-04 09:39:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:33,518 INFO L225 Difference]: With dead ends: 6996 [2025-03-04 09:39:33,518 INFO L226 Difference]: Without dead ends: 6996 [2025-03-04 09:39:33,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:33,519 INFO L435 NwaCegarLoop]: 2449 mSDtfsCounter, 911 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:33,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 7016 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:39:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2025-03-04 09:39:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6029. [2025-03-04 09:39:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 5064 states have (on average 1.7648104265402844) internal successors, (8937), 5983 states have internal predecessors, (8937), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:39:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9029 transitions. [2025-03-04 09:39:33,569 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9029 transitions. Word has length 58 [2025-03-04 09:39:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:33,569 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9029 transitions. [2025-03-04 09:39:33,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:39:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9029 transitions. [2025-03-04 09:39:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:39:33,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:33,570 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] [2025-03-04 09:39:33,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:39:33,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:33,770 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:33,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1118010507, now seen corresponding path program 1 times [2025-03-04 09:39:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:33,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018314416] [2025-03-04 09:39:33,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:33,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:33,773 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:33,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:39:33,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:39:33,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:39:33,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:33,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:34,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:39:34,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:34,017 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 [2025-03-04 09:39:34,021 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 [2025-03-04 09:39:34,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:39:34,296 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 [2025-03-04 09:39:34,304 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:39:34,304 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 [2025-03-04 09:39:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:34,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:34,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018314416] [2025-03-04 09:39:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018314416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:39:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680104147] [2025-03-04 09:39:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:34,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:39:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:34,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:39:34,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:34,311 INFO L87 Difference]: Start difference. First operand 6029 states and 9029 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-04 09:39:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:36,853 INFO L93 Difference]: Finished difference Result 5945 states and 8748 transitions. [2025-03-04 09:39:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:39:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2025-03-04 09:39:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:36,861 INFO L225 Difference]: With dead ends: 5945 [2025-03-04 09:39:36,861 INFO L226 Difference]: Without dead ends: 5945 [2025-03-04 09:39:36,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:39:36,862 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 1643 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:36,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1423 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-04 09:39:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2025-03-04 09:39:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5768. [2025-03-04 09:39:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4887 states have (on average 1.7037037037037037) internal successors, (8326), 5722 states have internal predecessors, (8326), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:39:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8418 transitions. [2025-03-04 09:39:36,915 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8418 transitions. Word has length 61 [2025-03-04 09:39:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:36,916 INFO L471 AbstractCegarLoop]: Abstraction has 5768 states and 8418 transitions. [2025-03-04 09:39:36,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-04 09:39:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8418 transitions. [2025-03-04 09:39:36,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:39:36,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:36,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:36,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 09:39:37,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:37,117 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:37,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 444711809, now seen corresponding path program 1 times [2025-03-04 09:39:37,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:37,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150157449] [2025-03-04 09:39:37,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:37,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:37,119 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:37,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:39:37,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:39:37,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:39:37,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:37,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:37,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:39:37,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:37,358 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 [2025-03-04 09:39:37,366 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 [2025-03-04 09:39:37,380 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 [2025-03-04 09:39:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:37,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:37,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150157449] [2025-03-04 09:39:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150157449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:37,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452254457] [2025-03-04 09:39:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:39:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:37,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:39:37,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:37,387 INFO L87 Difference]: Start difference. First operand 5768 states and 8418 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:39:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:40,237 INFO L93 Difference]: Finished difference Result 5767 states and 8415 transitions. [2025-03-04 09:39:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:39:40,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2025-03-04 09:39:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:40,244 INFO L225 Difference]: With dead ends: 5767 [2025-03-04 09:39:40,244 INFO L226 Difference]: Without dead ends: 5767 [2025-03-04 09:39:40,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:39:40,246 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 2 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:40,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5748 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-04 09:39:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2025-03-04 09:39:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5767. [2025-03-04 09:39:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4887 states have (on average 1.7030898301616533) internal successors, (8323), 5721 states have internal predecessors, (8323), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:39:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8415 transitions. [2025-03-04 09:39:40,291 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8415 transitions. Word has length 66 [2025-03-04 09:39:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:40,291 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 8415 transitions. [2025-03-04 09:39:40,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:39:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8415 transitions. [2025-03-04 09:39:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:39:40,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:40,292 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:40,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 09:39:40,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:40,492 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:40,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash 444711810, now seen corresponding path program 1 times [2025-03-04 09:39:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:40,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50759714] [2025-03-04 09:39:40,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:40,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:40,495 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:40,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:39:40,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:39:40,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:39:40,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:40,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:40,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:39:40,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:40,731 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 [2025-03-04 09:39:40,744 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 [2025-03-04 09:39:40,750 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 [2025-03-04 09:39:40,782 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 [2025-03-04 09:39:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:40,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:40,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50759714] [2025-03-04 09:39:40,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50759714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:40,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:40,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788208699] [2025-03-04 09:39:40,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:40,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:39:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:40,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:39:40,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:40,809 INFO L87 Difference]: Start difference. First operand 5767 states and 8415 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:39:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:44,516 INFO L93 Difference]: Finished difference Result 5766 states and 8412 transitions. [2025-03-04 09:39:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:39:44,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2025-03-04 09:39:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:44,520 INFO L225 Difference]: With dead ends: 5766 [2025-03-04 09:39:44,520 INFO L226 Difference]: Without dead ends: 5766 [2025-03-04 09:39:44,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:39:44,521 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 1 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:44,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5704 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-03-04 09:39:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2025-03-04 09:39:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5766. [2025-03-04 09:39:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 4884 states have (on average 1.7035217035217036) internal successors, (8320), 5720 states have internal predecessors, (8320), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:39:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8412 transitions. [2025-03-04 09:39:44,557 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8412 transitions. Word has length 66 [2025-03-04 09:39:44,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:44,557 INFO L471 AbstractCegarLoop]: Abstraction has 5766 states and 8412 transitions. [2025-03-04 09:39:44,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:39:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8412 transitions. [2025-03-04 09:39:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:39:44,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:44,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:44,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 09:39:44,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:44,758 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr774REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:39:44,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2100762435, now seen corresponding path program 1 times [2025-03-04 09:39:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:44,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228408837] [2025-03-04 09:39:44,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:44,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:44,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:44,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:39:44,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:39:44,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:39:44,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:39:44,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:44,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:45,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:39:45,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:45,011 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 [2025-03-04 09:39:45,026 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 [2025-03-04 09:39:45,044 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 [2025-03-04 09:39:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:39:45,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:39:45,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228408837] [2025-03-04 09:39:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228408837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:39:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:39:45,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:39:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588386490] [2025-03-04 09:39:45,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:39:45,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:39:45,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:39:45,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:39:45,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:39:45,052 INFO L87 Difference]: Start difference. First operand 5766 states and 8412 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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)