./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.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_JEN_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:28:28,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:28:28,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:28:28,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:28:28,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:28:28,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:28:28,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:28:28,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:28:28,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:28:28,218 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:28:28,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:28:28,219 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:28:28,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:28:28,219 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:28:28,220 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:28:28,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:28:28,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:28:28,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:28:28,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:28:28,221 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 -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2025-03-04 09:28:28,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:28:28,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:28:28,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:28:28,448 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:28:28,448 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:28:28,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-03-04 09:28:29,545 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8779a546c/168b68a888e14078a86069e96b099790/FLAG472b3f8d4 [2025-03-04 09:28:29,849 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:28:29,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-03-04 09:28:29,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8779a546c/168b68a888e14078a86069e96b099790/FLAG472b3f8d4 [2025-03-04 09:28:29,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8779a546c/168b68a888e14078a86069e96b099790 [2025-03-04 09:28:29,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:28:29,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:28:29,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:28:29,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:28:29,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:28:29,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:28:29" (1/1) ... [2025-03-04 09:28:29,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b2070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:29, skipping insertion in model container [2025-03-04 09:28:29,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:28:29" (1/1) ... [2025-03-04 09:28:29,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:28:30,180 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 09:28:30,205 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 09:28:30,208 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 09:28:30,211 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 09:28:30,217 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 09:28:30,240 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 09:28:30,240 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 09:28:30,243 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 09:28:30,243 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 09:28:30,244 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 09:28:30,246 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 09:28:30,246 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 09:28:30,246 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 09:28:30,249 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 09:28:30,249 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 09:28:30,250 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 09:28:30,251 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 09:28:30,251 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 09:28:30,252 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 09:28:30,254 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 09:28:30,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:28:30,273 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 09:28:30,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@451113b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:30, skipping insertion in model container [2025-03-04 09:28:30,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:28:30,274 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:28:30,275 INFO L158 Benchmark]: Toolchain (without parser) took 396.04ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 90.1MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:28:30,276 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:28:30,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.42ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 90.1MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:28:30,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.42ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 90.1MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 727]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/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_JEN_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:28:31,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:28:31,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:28:31,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:28:31,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:28:32,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:28:32,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:28:32,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:28:32,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:28:32,010 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:28:32,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:28:32,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:28:32,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:28:32,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:28:32,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:28:32,012 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:28:32,013 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:28:32,017 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:28:32,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:28:32,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:28:32,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:28:32,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:28:32,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:28:32,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:28:32,019 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 -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2025-03-04 09:28:32,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:28:32,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:28:32,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:28:32,244 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:28:32,244 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:28:32,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-03-04 09:28:33,392 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c5d5b1b/d456cf8919b44e69a6157d9d886406da/FLAG206febf8f [2025-03-04 09:28:33,702 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:28:33,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-03-04 09:28:33,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c5d5b1b/d456cf8919b44e69a6157d9d886406da/FLAG206febf8f [2025-03-04 09:28:33,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c5d5b1b/d456cf8919b44e69a6157d9d886406da [2025-03-04 09:28:33,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:28:33,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:28:33,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:28:33,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:28:33,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:28:33,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:28:33" (1/1) ... [2025-03-04 09:28:33,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c22e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:33, skipping insertion in model container [2025-03-04 09:28:33,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:28:33" (1/1) ... [2025-03-04 09:28:33,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:28:34,196 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 09:28:34,221 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 09:28:34,228 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 09:28:34,230 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 09:28:34,236 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 09:28:34,259 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 09:28:34,260 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 09:28:34,261 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 09:28:34,262 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 09:28:34,263 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 09:28:34,264 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 09:28:34,265 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 09:28:34,266 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 09:28:34,268 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 09:28:34,269 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 09:28:34,270 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 09:28:34,271 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 09:28:34,272 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 09:28:34,272 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 09:28:34,275 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 09:28:34,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:28:34,293 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:28:34,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:28:34,327 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 09:28:34,346 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 09:28:34,347 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 09:28:34,353 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 09:28:34,360 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 09:28:34,378 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 09:28:34,378 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 09:28:34,380 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 09:28:34,380 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 09:28:34,381 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 09:28:34,382 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 09:28:34,382 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 09:28:34,383 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 09:28:34,385 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 09:28:34,385 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 09:28:34,387 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 09:28:34,387 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 09:28:34,387 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 09:28:34,388 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 09:28:34,390 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 09:28:34,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:28:34,395 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:28:34,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:28:34,498 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:28:34,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34 WrapperNode [2025-03-04 09:28:34,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:28:34,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:28:34,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:28:34,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:28:34,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,562 INFO L138 Inliner]: procedures = 179, calls = 323, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1152 [2025-03-04 09:28:34,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:28:34,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:28:34,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:28:34,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:28:34,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,650 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 34, 265]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2025-03-04 09:28:34,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,688 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:28:34,715 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:28:34,715 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:28:34,715 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:28:34,716 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (1/1) ... [2025-03-04 09:28:34,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:28:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:34,742 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 09:28:34,744 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 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-04 09:28:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:28:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:28:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:28:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:28:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:28:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:28:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:28:34,958 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:28:34,960 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:28:37,787 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:28:37,852 INFO L? ?]: Removed 1292 outVars from TransFormulas that were not future-live. [2025-03-04 09:28:37,853 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:28:37,881 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:28:37,881 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:28:37,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:28:37 BoogieIcfgContainer [2025-03-04 09:28:37,882 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:28:37,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:28:37,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:28:37,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:28:37,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:28:33" (1/3) ... [2025-03-04 09:28:37,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c503e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:28:37, skipping insertion in model container [2025-03-04 09:28:37,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:28:34" (2/3) ... [2025-03-04 09:28:37,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c503e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:28:37, skipping insertion in model container [2025-03-04 09:28:37,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:28:37" (3/3) ... [2025-03-04 09:28:37,890 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2025-03-04 09:28:37,900 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:28:37,901 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test7-2.i that has 5 procedures, 1255 locations, 1 initial locations, 41 loop locations, and 628 error locations. [2025-03-04 09:28:37,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:28:37,962 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;@12d872f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:28:37,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-04 09:28:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:28:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:28:37,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:37,972 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:28:37,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:37,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1411020, now seen corresponding path program 1 times [2025-03-04 09:28:37,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:37,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487542043] [2025-03-04 09:28:37,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:37,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:37,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:37,985 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 09:28:37,986 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 09:28:38,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:28:38,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:28:38,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:38,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:38,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:28:38,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:38,130 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 09:28:38,143 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 09:28:38,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:38,144 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487542043] [2025-03-04 09:28:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487542043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:38,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:28:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241480847] [2025-03-04 09:28:38,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:38,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:28:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:38,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:28:38,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:28:38,166 INFO L87 Difference]: Start difference. First operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:39,465 INFO L93 Difference]: Finished difference Result 1414 states and 1490 transitions. [2025-03-04 09:28:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:28:39,466 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 09:28:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:39,478 INFO L225 Difference]: With dead ends: 1414 [2025-03-04 09:28:39,478 INFO L226 Difference]: Without dead ends: 1412 [2025-03-04 09:28:39,479 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 09:28:39,481 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 1143 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:39,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 898 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:28:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2025-03-04 09:28:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1226. [2025-03-04 09:28:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 612 states have (on average 2.099673202614379) internal successors, (1285), 1220 states have internal predecessors, (1285), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1293 transitions. [2025-03-04 09:28:39,545 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1293 transitions. Word has length 3 [2025-03-04 09:28:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:39,546 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1293 transitions. [2025-03-04 09:28:39,546 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 09:28:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1293 transitions. [2025-03-04 09:28:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:28:39,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:39,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:28:39,552 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 09:28:39,746 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 09:28:39,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:39,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1411021, now seen corresponding path program 1 times [2025-03-04 09:28:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299074025] [2025-03-04 09:28:39,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:39,749 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 09:28:39,750 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 09:28:39,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:28:39,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:28:39,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:39,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:39,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:28:39,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:39,851 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 09:28:39,866 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 09:28:39,867 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:39,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299074025] [2025-03-04 09:28:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299074025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:39,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:28:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464939169] [2025-03-04 09:28:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:39,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:28:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:39,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:28:39,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:28:39,869 INFO L87 Difference]: Start difference. First operand 1226 states and 1293 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 09:28:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:41,640 INFO L93 Difference]: Finished difference Result 1819 states and 1929 transitions. [2025-03-04 09:28:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:28:41,640 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 09:28:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:41,645 INFO L225 Difference]: With dead ends: 1819 [2025-03-04 09:28:41,645 INFO L226 Difference]: Without dead ends: 1819 [2025-03-04 09:28:41,645 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 09:28:41,646 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 633 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:41,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1676 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:28:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2025-03-04 09:28:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1433. [2025-03-04 09:28:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 820 states have (on average 2.080487804878049) internal successors, (1706), 1427 states have internal predecessors, (1706), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1714 transitions. [2025-03-04 09:28:41,677 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1714 transitions. Word has length 3 [2025-03-04 09:28:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:41,677 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 1714 transitions. [2025-03-04 09:28:41,677 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 09:28:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1714 transitions. [2025-03-04 09:28:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:28:41,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:41,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:41,683 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 09:28:41,882 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 09:28:41,882 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:41,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1773160360, now seen corresponding path program 1 times [2025-03-04 09:28:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:41,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320203027] [2025-03-04 09:28:41,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:41,885 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 09:28:41,887 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 09:28:41,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:28:41,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:28:41,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:41,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:41,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:28:41,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:41,995 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 09:28:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:28:42,041 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 09:28:42,058 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:28:42,058 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 09:28:42,069 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 09:28:42,069 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:42,069 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320203027] [2025-03-04 09:28:42,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320203027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:42,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:42,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:42,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790206515] [2025-03-04 09:28:42,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:42,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:42,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:42,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:42,071 INFO L87 Difference]: Start difference. First operand 1433 states and 1714 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 09:28:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:44,030 INFO L93 Difference]: Finished difference Result 1613 states and 1905 transitions. [2025-03-04 09:28:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:44,030 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 09:28:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:44,035 INFO L225 Difference]: With dead ends: 1613 [2025-03-04 09:28:44,035 INFO L226 Difference]: Without dead ends: 1613 [2025-03-04 09:28:44,035 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 09:28:44,035 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 2571 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:44,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 513 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:28:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2025-03-04 09:28:44,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1214. [2025-03-04 09:28:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 612 states have (on average 2.0784313725490198) internal successors, (1272), 1208 states have internal predecessors, (1272), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1280 transitions. [2025-03-04 09:28:44,066 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1280 transitions. Word has length 7 [2025-03-04 09:28:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:44,066 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1280 transitions. [2025-03-04 09:28:44,067 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 09:28:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1280 transitions. [2025-03-04 09:28:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:28:44,067 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:44,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:44,075 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 09:28:44,267 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 09:28:44,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr619REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:44,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -866602378, now seen corresponding path program 1 times [2025-03-04 09:28:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:44,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750266639] [2025-03-04 09:28:44,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:44,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:44,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:44,273 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 09:28:44,275 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 09:28:44,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:28:44,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:28:44,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:44,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:44,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:28:44,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:44,381 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 09:28:44,389 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 09:28:44,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:44,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750266639] [2025-03-04 09:28:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750266639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:44,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:28:44,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211288577] [2025-03-04 09:28:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:44,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:28:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:44,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:28:44,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:28:44,391 INFO L87 Difference]: Start difference. First operand 1214 states and 1280 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 09:28:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:45,563 INFO L93 Difference]: Finished difference Result 1547 states and 1643 transitions. [2025-03-04 09:28:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:28:45,563 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 09:28:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:45,567 INFO L225 Difference]: With dead ends: 1547 [2025-03-04 09:28:45,567 INFO L226 Difference]: Without dead ends: 1547 [2025-03-04 09:28:45,568 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 09:28:45,568 INFO L435 NwaCegarLoop]: 1141 mSDtfsCounter, 920 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:45,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1486 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:28:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2025-03-04 09:28:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1167. [2025-03-04 09:28:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 612 states have (on average 2.0016339869281046) internal successors, (1225), 1161 states have internal predecessors, (1225), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1233 transitions. [2025-03-04 09:28:45,584 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1233 transitions. Word has length 8 [2025-03-04 09:28:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:45,584 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1233 transitions. [2025-03-04 09:28:45,584 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 09:28:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1233 transitions. [2025-03-04 09:28:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:28:45,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:45,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:45,591 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 09:28:45,785 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 09:28:45,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:45,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash -866602377, now seen corresponding path program 1 times [2025-03-04 09:28:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640716998] [2025-03-04 09:28:45,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:45,788 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 09:28:45,789 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 09:28:45,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:28:45,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:28:45,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:45,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:45,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:28:45,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:45,902 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 09:28:45,919 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 09:28:45,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:45,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:45,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640716998] [2025-03-04 09:28:45,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640716998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:45,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:45,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:28:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495953878] [2025-03-04 09:28:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:45,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:28:45,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:45,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:28:45,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:28:45,920 INFO L87 Difference]: Start difference. First operand 1167 states and 1233 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 09:28:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:47,462 INFO L93 Difference]: Finished difference Result 1637 states and 1736 transitions. [2025-03-04 09:28:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:28:47,462 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 09:28:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:47,466 INFO L225 Difference]: With dead ends: 1637 [2025-03-04 09:28:47,466 INFO L226 Difference]: Without dead ends: 1637 [2025-03-04 09:28:47,466 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 09:28:47,466 INFO L435 NwaCegarLoop]: 1333 mSDtfsCounter, 688 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:47,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1852 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:28:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2025-03-04 09:28:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1194. [2025-03-04 09:28:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 649 states have (on average 1.9861325115562403) internal successors, (1289), 1188 states have internal predecessors, (1289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1297 transitions. [2025-03-04 09:28:47,482 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1297 transitions. Word has length 8 [2025-03-04 09:28:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:47,482 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1297 transitions. [2025-03-04 09:28:47,482 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 09:28:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1297 transitions. [2025-03-04 09:28:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:28:47,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:47,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:47,490 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 09:28:47,683 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 09:28:47,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr295REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:47,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -796701006, now seen corresponding path program 1 times [2025-03-04 09:28:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17086600] [2025-03-04 09:28:47,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:47,686 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 09:28:47,687 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 09:28:47,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:28:47,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:28:47,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:47,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:47,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:28:47,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:47,808 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 09:28:47,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:47,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17086600] [2025-03-04 09:28:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17086600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615226217] [2025-03-04 09:28:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:47,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:47,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:47,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:47,811 INFO L87 Difference]: Start difference. First operand 1194 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:49,169 INFO L93 Difference]: Finished difference Result 1361 states and 1473 transitions. [2025-03-04 09:28:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:49,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:28:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:49,172 INFO L225 Difference]: With dead ends: 1361 [2025-03-04 09:28:49,172 INFO L226 Difference]: Without dead ends: 1361 [2025-03-04 09:28:49,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:28:49,173 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 1141 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:49,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1434 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:28:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2025-03-04 09:28:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1171. [2025-03-04 09:28:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 649 states have (on average 1.950693374422188) internal successors, (1266), 1165 states have internal predecessors, (1266), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1274 transitions. [2025-03-04 09:28:49,184 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1274 transitions. Word has length 12 [2025-03-04 09:28:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:49,184 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1274 transitions. [2025-03-04 09:28:49,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1274 transitions. [2025-03-04 09:28:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:28:49,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:49,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:49,191 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 09:28:49,384 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 09:28:49,385 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr296REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:49,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash -796701005, now seen corresponding path program 1 times [2025-03-04 09:28:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:49,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736640235] [2025-03-04 09:28:49,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:49,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:49,387 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 09:28:49,388 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 09:28:49,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:28:49,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:28:49,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:49,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:49,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:28:49,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:49,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:28:49,556 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 09:28:49,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:49,557 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736640235] [2025-03-04 09:28:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736640235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648418056] [2025-03-04 09:28:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:49,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:49,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:49,558 INFO L87 Difference]: Start difference. First operand 1171 states and 1274 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:51,489 INFO L93 Difference]: Finished difference Result 1712 states and 1850 transitions. [2025-03-04 09:28:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:51,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:28:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:51,493 INFO L225 Difference]: With dead ends: 1712 [2025-03-04 09:28:51,493 INFO L226 Difference]: Without dead ends: 1712 [2025-03-04 09:28:51,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:28:51,493 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 612 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:51,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2149 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:28:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2025-03-04 09:28:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1360. [2025-03-04 09:28:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 838 states have (on average 1.9367541766109786) internal successors, (1623), 1354 states have internal predecessors, (1623), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1631 transitions. [2025-03-04 09:28:51,509 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1631 transitions. Word has length 12 [2025-03-04 09:28:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:51,510 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1631 transitions. [2025-03-04 09:28:51,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1631 transitions. [2025-03-04 09:28:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:28:51,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:51,511 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:51,519 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 09:28:51,712 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 09:28:51,712 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:51,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:51,713 INFO L85 PathProgramCache]: Analyzing trace with hash -809603474, now seen corresponding path program 1 times [2025-03-04 09:28:51,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:51,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133655338] [2025-03-04 09:28:51,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:51,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:51,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:51,715 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 09:28:51,715 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 09:28:51,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:28:51,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:28:51,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:51,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:51,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:28:51,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:51,858 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 09:28:51,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:51,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133655338] [2025-03-04 09:28:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133655338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135179079] [2025-03-04 09:28:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:51,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:28:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:51,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:28:51,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:28:51,860 INFO L87 Difference]: Start difference. First operand 1360 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:52,085 INFO L93 Difference]: Finished difference Result 2071 states and 2547 transitions. [2025-03-04 09:28:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:28:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:28:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:52,090 INFO L225 Difference]: With dead ends: 2071 [2025-03-04 09:28:52,090 INFO L226 Difference]: Without dead ends: 2071 [2025-03-04 09:28:52,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 09:28:52,091 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 601 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:52,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2448 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:28:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-03-04 09:28:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1723. [2025-03-04 09:28:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1201 states have (on average 1.9050791007493755) internal successors, (2288), 1717 states have internal predecessors, (2288), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2296 transitions. [2025-03-04 09:28:52,110 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2296 transitions. Word has length 12 [2025-03-04 09:28:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:52,110 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2296 transitions. [2025-03-04 09:28:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2296 transitions. [2025-03-04 09:28:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:28:52,111 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:52,111 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:52,117 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 09:28:52,311 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 09:28:52,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:52,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 673374616, now seen corresponding path program 1 times [2025-03-04 09:28:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656329381] [2025-03-04 09:28:52,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:52,314 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 09:28:52,315 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 09:28:52,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:28:52,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:28:52,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:52,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:52,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:28:52,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:52,459 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 09:28:52,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:52,459 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656329381] [2025-03-04 09:28:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656329381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:52,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:52,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:28:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785321416] [2025-03-04 09:28:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:52,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:52,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:52,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:52,460 INFO L87 Difference]: Start difference. First operand 1723 states and 2296 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:52,864 INFO L93 Difference]: Finished difference Result 2072 states and 2547 transitions. [2025-03-04 09:28:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:52,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:28:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:52,869 INFO L225 Difference]: With dead ends: 2072 [2025-03-04 09:28:52,869 INFO L226 Difference]: Without dead ends: 2072 [2025-03-04 09:28:52,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:28:52,870 INFO L435 NwaCegarLoop]: 1372 mSDtfsCounter, 606 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:52,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 3713 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:28:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2025-03-04 09:28:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1725. [2025-03-04 09:28:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1203 states have (on average 1.9027431421446384) internal successors, (2289), 1719 states have internal predecessors, (2289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2297 transitions. [2025-03-04 09:28:52,888 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2297 transitions. Word has length 13 [2025-03-04 09:28:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:52,888 INFO L471 AbstractCegarLoop]: Abstraction has 1725 states and 2297 transitions. [2025-03-04 09:28:52,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2297 transitions. [2025-03-04 09:28:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:28:52,889 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:52,889 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:52,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 09:28:53,089 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 09:28:53,089 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr272REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:53,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1072028596, now seen corresponding path program 1 times [2025-03-04 09:28:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:53,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172184036] [2025-03-04 09:28:53,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:53,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:53,092 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 09:28:53,093 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 09:28:53,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:28:53,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:28:53,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:53,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:53,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:28:53,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:53,206 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 09:28:53,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:53,206 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172184036] [2025-03-04 09:28:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172184036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:53,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:53,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:28:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922226844] [2025-03-04 09:28:53,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:53,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:53,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:53,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:53,208 INFO L87 Difference]: Start difference. First operand 1725 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:53,261 INFO L93 Difference]: Finished difference Result 1653 states and 2174 transitions. [2025-03-04 09:28:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:28:53,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:28:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:53,266 INFO L225 Difference]: With dead ends: 1653 [2025-03-04 09:28:53,266 INFO L226 Difference]: Without dead ends: 1653 [2025-03-04 09:28:53,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:28:53,267 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 45 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3313 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 09:28:53,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3313 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:28:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2025-03-04 09:28:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2025-03-04 09:28:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1150 states have (on average 1.8834782608695653) internal successors, (2166), 1647 states have internal predecessors, (2166), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2174 transitions. [2025-03-04 09:28:53,290 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2174 transitions. Word has length 13 [2025-03-04 09:28:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:53,290 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2174 transitions. [2025-03-04 09:28:53,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2174 transitions. [2025-03-04 09:28:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:28:53,291 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:53,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:53,298 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 09:28:53,491 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 09:28:53,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:53,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash -639889847, now seen corresponding path program 1 times [2025-03-04 09:28:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6491250] [2025-03-04 09:28:53,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:53,495 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 09:28:53,497 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 09:28:53,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:28:53,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:28:53,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:53,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:53,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:28:53,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:53,612 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:28:53,613 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:28:53,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-03-04 09:28:53,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:28:53,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-03-04 09:28:53,669 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 09:28:53,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:53,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6491250] [2025-03-04 09:28:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6491250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:28:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343789454] [2025-03-04 09:28:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:53,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:53,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:53,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:53,670 INFO L87 Difference]: Start difference. First operand 1653 states and 2174 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:28:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:53,885 INFO L93 Difference]: Finished difference Result 2373 states and 2731 transitions. [2025-03-04 09:28:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-04 09:28:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:53,891 INFO L225 Difference]: With dead ends: 2373 [2025-03-04 09:28:53,891 INFO L226 Difference]: Without dead ends: 2373 [2025-03-04 09:28:53,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 09:28:53,891 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 1066 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:53,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3330 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:28:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2025-03-04 09:28:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1344. [2025-03-04 09:28:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 841 states have (on average 1.896551724137931) internal successors, (1595), 1338 states have internal predecessors, (1595), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1603 transitions. [2025-03-04 09:28:53,908 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1603 transitions. Word has length 14 [2025-03-04 09:28:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:53,908 INFO L471 AbstractCegarLoop]: Abstraction has 1344 states and 1603 transitions. [2025-03-04 09:28:53,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 09:28:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1603 transitions. [2025-03-04 09:28:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:28:53,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:53,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:53,918 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 09:28:54,113 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 09:28:54,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr611REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:54,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205508, now seen corresponding path program 1 times [2025-03-04 09:28:54,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467458769] [2025-03-04 09:28:54,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:54,115 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 09:28:54,117 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 09:28:54,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:28:54,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:28:54,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:54,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:54,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:28:54,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:54,256 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 09:28:54,282 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 09:28:54,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:54,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:54,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467458769] [2025-03-04 09:28:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467458769] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:54,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:54,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18763080] [2025-03-04 09:28:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:54,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:54,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:54,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:54,285 INFO L87 Difference]: Start difference. First operand 1344 states and 1603 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 09:28:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:55,818 INFO L93 Difference]: Finished difference Result 1715 states and 2068 transitions. [2025-03-04 09:28:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-04 09:28:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:55,822 INFO L225 Difference]: With dead ends: 1715 [2025-03-04 09:28:55,822 INFO L226 Difference]: Without dead ends: 1715 [2025-03-04 09:28:55,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 09:28:55,823 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 885 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:55,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1479 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:28:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2025-03-04 09:28:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1321. [2025-03-04 09:28:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 841 states have (on average 1.8418549346016646) internal successors, (1549), 1315 states have internal predecessors, (1549), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1557 transitions. [2025-03-04 09:28:55,836 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1557 transitions. Word has length 17 [2025-03-04 09:28:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:55,837 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1557 transitions. [2025-03-04 09:28:55,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 09:28:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1557 transitions. [2025-03-04 09:28:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:28:55,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:55,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:28:55,845 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 09:28:56,038 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 09:28:56,039 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:56,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205507, now seen corresponding path program 1 times [2025-03-04 09:28:56,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:56,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566527939] [2025-03-04 09:28:56,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:56,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:56,041 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 09:28:56,043 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 09:28:56,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:28:56,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:28:56,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:56,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:56,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:28:56,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:56,183 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 09:28:56,254 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 09:28:56,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:28:56,254 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:56,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566527939] [2025-03-04 09:28:56,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566527939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:28:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:28:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:28:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912674821] [2025-03-04 09:28:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:28:56,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:28:56,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:56,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:28:56,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:28:56,255 INFO L87 Difference]: Start difference. First operand 1321 states and 1557 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 09:28:58,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:58,201 INFO L93 Difference]: Finished difference Result 1956 states and 2310 transitions. [2025-03-04 09:28:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:28:58,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-04 09:28:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:58,205 INFO L225 Difference]: With dead ends: 1956 [2025-03-04 09:28:58,205 INFO L226 Difference]: Without dead ends: 1956 [2025-03-04 09:28:58,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 09:28:58,206 INFO L435 NwaCegarLoop]: 1272 mSDtfsCounter, 726 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:58,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2555 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:28:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2025-03-04 09:28:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1435. [2025-03-04 09:28:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 955 states have (on average 1.7664921465968586) internal successors, (1687), 1429 states have internal predecessors, (1687), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:28:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1695 transitions. [2025-03-04 09:28:58,218 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1695 transitions. Word has length 17 [2025-03-04 09:28:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:58,219 INFO L471 AbstractCegarLoop]: Abstraction has 1435 states and 1695 transitions. [2025-03-04 09:28:58,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 09:28:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1695 transitions. [2025-03-04 09:28:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-04 09:28:58,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:58,220 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] [2025-03-04 09:28:58,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:28:58,421 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 09:28:58,421 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:28:58,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash -553119500, now seen corresponding path program 1 times [2025-03-04 09:28:58,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:58,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424407359] [2025-03-04 09:28:58,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:58,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:58,424 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 09:28:58,425 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 09:28:58,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 09:28:58,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 09:28:58,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:58,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:58,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:28:58,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:58,607 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 09:28:58,752 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 09:28:58,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:28:59,073 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 09:28:59,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424407359] [2025-03-04 09:28:59,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424407359] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:28:59,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:28:59,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:28:59,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241517465] [2025-03-04 09:28:59,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:28:59,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:28:59,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:28:59,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:28:59,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:28:59,074 INFO L87 Difference]: Start difference. First operand 1435 states and 1695 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 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 09:29:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:05,893 INFO L93 Difference]: Finished difference Result 2312 states and 2800 transitions. [2025-03-04 09:29:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:29:05,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 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 36 [2025-03-04 09:29:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:05,898 INFO L225 Difference]: With dead ends: 2312 [2025-03-04 09:29:05,898 INFO L226 Difference]: Without dead ends: 2312 [2025-03-04 09:29:05,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 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 09:29:05,899 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 2132 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:05,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 4997 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2025-03-04 09:29:05,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2025-03-04 09:29:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1599. [2025-03-04 09:29:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1119 states have (on average 1.7149240393208223) internal successors, (1919), 1593 states have internal predecessors, (1919), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:29:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1927 transitions. [2025-03-04 09:29:05,925 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1927 transitions. Word has length 36 [2025-03-04 09:29:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:05,926 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 1927 transitions. [2025-03-04 09:29:05,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 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 09:29:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1927 transitions. [2025-03-04 09:29:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 09:29:05,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:05,927 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] [2025-03-04 09:29:05,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:29:06,127 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 09:29:06,127 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:06,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 501488164, now seen corresponding path program 1 times [2025-03-04 09:29:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063622372] [2025-03-04 09:29:06,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:06,130 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 09:29:06,131 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 09:29:06,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 09:29:06,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 09:29:06,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:06,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:06,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:29:06,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:06,306 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 09:29:06,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:06,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063622372] [2025-03-04 09:29:06,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063622372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:06,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:06,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:29:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403250268] [2025-03-04 09:29:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:06,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:29:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:06,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:29:06,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:29:06,310 INFO L87 Difference]: Start difference. First operand 1599 states and 1927 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 09:29:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:06,362 INFO L93 Difference]: Finished difference Result 1288 states and 1491 transitions. [2025-03-04 09:29:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:29:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2025-03-04 09:29:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:06,365 INFO L225 Difference]: With dead ends: 1288 [2025-03-04 09:29:06,365 INFO L226 Difference]: Without dead ends: 1288 [2025-03-04 09:29:06,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 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 09:29:06,366 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 56 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3074 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 09:29:06,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3074 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:29:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2025-03-04 09:29:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2025-03-04 09:29:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 829 states have (on average 1.7864897466827503) internal successors, (1481), 1280 states have internal predecessors, (1481), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:29:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1489 transitions. [2025-03-04 09:29:06,376 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1489 transitions. Word has length 51 [2025-03-04 09:29:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:06,376 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1489 transitions. [2025-03-04 09:29:06,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 09:29:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1489 transitions. [2025-03-04 09:29:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-04 09:29:06,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:06,376 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] [2025-03-04 09:29:06,385 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 09:29:06,577 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 09:29:06,577 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:06,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1298620196, now seen corresponding path program 1 times [2025-03-04 09:29:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763813257] [2025-03-04 09:29:06,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:06,580 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 09:29:06,580 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 09:29:06,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 09:29:06,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 09:29:06,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:06,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:06,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:29:06,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:06,764 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 09:29:07,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:29:07,063 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 09:29:07,074 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:29:07,074 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 09:29:07,077 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 09:29:07,077 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:07,077 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763813257] [2025-03-04 09:29:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763813257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:07,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:07,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:29:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957392061] [2025-03-04 09:29:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:07,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:29:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:07,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:29:07,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:29:07,078 INFO L87 Difference]: Start difference. First operand 1286 states and 1489 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 09:29:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:08,897 INFO L93 Difference]: Finished difference Result 1634 states and 1954 transitions. [2025-03-04 09:29:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:29:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-03-04 09:29:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:08,900 INFO L225 Difference]: With dead ends: 1634 [2025-03-04 09:29:08,900 INFO L226 Difference]: Without dead ends: 1634 [2025-03-04 09:29:08,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:29:08,901 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 1829 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:08,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 982 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:29:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2025-03-04 09:29:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1211. [2025-03-04 09:29:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 792 states have (on average 1.7285353535353536) internal successors, (1369), 1205 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:29:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1377 transitions. [2025-03-04 09:29:08,912 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1377 transitions. Word has length 59 [2025-03-04 09:29:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:08,912 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1377 transitions. [2025-03-04 09:29:08,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 09:29:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1377 transitions. [2025-03-04 09:29:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:29:08,913 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:08,913 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:08,923 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 09:29:09,113 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 09:29:09,114 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:09,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash -379593052, now seen corresponding path program 1 times [2025-03-04 09:29:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:09,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546317772] [2025-03-04 09:29:09,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:09,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:09,116 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 09:29:09,117 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 09:29:09,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:29:09,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:29:09,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:09,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:09,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:29:09,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:09,296 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 09:29:09,311 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 09:29:09,328 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 09:29:09,334 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 09:29:09,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:09,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546317772] [2025-03-04 09:29:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546317772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:09,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:29:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534946756] [2025-03-04 09:29:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:09,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:29:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:09,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:29:09,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:29:09,335 INFO L87 Difference]: Start difference. First operand 1211 states and 1377 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:29:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:10,894 INFO L93 Difference]: Finished difference Result 1210 states and 1376 transitions. [2025-03-04 09:29:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:29:10,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-04 09:29:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:10,897 INFO L225 Difference]: With dead ends: 1210 [2025-03-04 09:29:10,897 INFO L226 Difference]: Without dead ends: 1210 [2025-03-04 09:29:10,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 09:29:10,897 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 2 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:10,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2621 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:29:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-03-04 09:29:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2025-03-04 09:29:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 792 states have (on average 1.7272727272727273) internal successors, (1368), 1204 states have internal predecessors, (1368), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:29:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1376 transitions. [2025-03-04 09:29:10,905 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1376 transitions. Word has length 64 [2025-03-04 09:29:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:10,906 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1376 transitions. [2025-03-04 09:29:10,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:29:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1376 transitions. [2025-03-04 09:29:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:29:10,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:10,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:29:10,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:29:11,106 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 09:29:11,107 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:11,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -379593051, now seen corresponding path program 1 times [2025-03-04 09:29:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479366027] [2025-03-04 09:29:11,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:11,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:11,109 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 09:29:11,110 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 09:29:11,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:29:11,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:29:11,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:11,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:11,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:29:11,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:11,297 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 09:29:11,310 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 09:29:11,315 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 09:29:11,346 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 09:29:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:29:11,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:11,357 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479366027] [2025-03-04 09:29:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479366027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:11,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:29:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213255169] [2025-03-04 09:29:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:11,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:29:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:11,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:29:11,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:29:11,358 INFO L87 Difference]: Start difference. First operand 1210 states and 1376 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:29:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:13,090 INFO L93 Difference]: Finished difference Result 1209 states and 1375 transitions. [2025-03-04 09:29:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:29:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-04 09:29:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:13,094 INFO L225 Difference]: With dead ends: 1209 [2025-03-04 09:29:13,094 INFO L226 Difference]: Without dead ends: 1209 [2025-03-04 09:29:13,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 09:29:13,094 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:13,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2662 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:29:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2025-03-04 09:29:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2025-03-04 09:29:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 791 states have (on average 1.7281921618204803) internal successors, (1367), 1203 states have internal predecessors, (1367), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:29:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1375 transitions. [2025-03-04 09:29:13,103 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1375 transitions. Word has length 64 [2025-03-04 09:29:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:13,103 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1375 transitions. [2025-03-04 09:29:13,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:29:13,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1375 transitions. [2025-03-04 09:29:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:29:13,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:13,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:29:13,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 09:29:13,304 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 09:29:13,304 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:13,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 926115777, now seen corresponding path program 1 times [2025-03-04 09:29:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598264340] [2025-03-04 09:29:13,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:13,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:13,307 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 09:29:13,308 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 09:29:13,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:29:13,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:29:13,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:13,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:13,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:29:13,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:13,494 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 09:29:13,536 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 09:29:13,543 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 09:29:13,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:13,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598264340] [2025-03-04 09:29:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598264340] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:29:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503977586] [2025-03-04 09:29:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:13,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:29:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:13,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:29:13,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:29:13,544 INFO L87 Difference]: Start difference. First operand 1209 states and 1375 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:29:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:15,594 INFO L93 Difference]: Finished difference Result 1221 states and 1390 transitions. [2025-03-04 09:29:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:29:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-04 09:29:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:15,597 INFO L225 Difference]: With dead ends: 1221 [2025-03-04 09:29:15,597 INFO L226 Difference]: Without dead ends: 1221 [2025-03-04 09:29:15,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:29:15,598 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 8 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:15,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4217 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:29:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2025-03-04 09:29:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1215. [2025-03-04 09:29:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 796 states have (on average 1.7261306532663316) internal successors, (1374), 1208 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:29:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1385 transitions. [2025-03-04 09:29:15,609 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1385 transitions. Word has length 72 [2025-03-04 09:29:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:15,609 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1385 transitions. [2025-03-04 09:29:15,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:29:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1385 transitions. [2025-03-04 09:29:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:29:15,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:15,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:29:15,619 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 09:29:15,810 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 09:29:15,810 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:15,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash 926115778, now seen corresponding path program 1 times [2025-03-04 09:29:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047139867] [2025-03-04 09:29:15,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:15,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:15,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:15,812 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 09:29:15,813 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 09:29:15,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:29:15,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:29:15,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:15,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:15,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:29:16,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:16,012 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 09:29:16,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:29:16,012 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047139867] [2025-03-04 09:29:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047139867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:29:16,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:29:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:29:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669859333] [2025-03-04 09:29:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:29:16,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:29:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:16,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:29:16,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:29:16,014 INFO L87 Difference]: Start difference. First operand 1215 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:29:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:16,040 INFO L93 Difference]: Finished difference Result 1212 states and 1379 transitions. [2025-03-04 09:29:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:29:16,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-04 09:29:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:16,043 INFO L225 Difference]: With dead ends: 1212 [2025-03-04 09:29:16,043 INFO L226 Difference]: Without dead ends: 1212 [2025-03-04 09:29:16,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:29:16,043 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:16,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3058 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:29:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2025-03-04 09:29:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2025-03-04 09:29:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 793 states have (on average 1.7276166456494326) internal successors, (1370), 1206 states have internal predecessors, (1370), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:29:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1379 transitions. [2025-03-04 09:29:16,053 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1379 transitions. Word has length 72 [2025-03-04 09:29:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:16,054 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1379 transitions. [2025-03-04 09:29:16,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:29:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1379 transitions. [2025-03-04 09:29:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:29:16,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:16,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:29:16,064 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 09:29:16,254 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 09:29:16,255 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:16,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash 696914376, now seen corresponding path program 1 times [2025-03-04 09:29:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:16,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154102677] [2025-03-04 09:29:16,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:29:16,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:16,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:16,258 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 09:29:16,259 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 09:29:16,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:29:16,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:29:16,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:29:16,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:16,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:29:16,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:29:16,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:29:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:29:16,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154102677] [2025-03-04 09:29:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154102677] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:29:16,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:29:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:29:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391268022] [2025-03-04 09:29:16,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:29:16,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:29:16,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:16,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:29:16,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:29:16,506 INFO L87 Difference]: Start difference. First operand 1212 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:29:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:29:16,592 INFO L93 Difference]: Finished difference Result 1224 states and 1396 transitions. [2025-03-04 09:29:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:29:16,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2025-03-04 09:29:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:29:16,595 INFO L225 Difference]: With dead ends: 1224 [2025-03-04 09:29:16,595 INFO L226 Difference]: Without dead ends: 1224 [2025-03-04 09:29:16,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:29:16,595 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 5 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:29:16,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4075 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:29:16,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2025-03-04 09:29:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1222. [2025-03-04 09:29:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 802 states have (on average 1.726932668329177) internal successors, (1385), 1215 states have internal predecessors, (1385), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:29:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1394 transitions. [2025-03-04 09:29:16,606 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1394 transitions. Word has length 73 [2025-03-04 09:29:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:29:16,606 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1394 transitions. [2025-03-04 09:29:16,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:29:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1394 transitions. [2025-03-04 09:29:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-04 09:29:16,606 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:29:16,606 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:29:16,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-04 09:29:16,806 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 09:29:16,807 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:29:16,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:29:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1821454721, now seen corresponding path program 2 times [2025-03-04 09:29:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:29:16,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051899213] [2025-03-04 09:29:16,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:29:16,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:29:16,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:29:16,809 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 09:29:16,811 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 09:29:16,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:29:52,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:29:52,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:29:52,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:52,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:29:52,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:53,039 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:29:53,039 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 09:29:53,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:29:53,149 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:29:53,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-04 09:29:53,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-04 09:29:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 09:29:53,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:29:53,229 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:29:53,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-04 09:29:53,255 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:29:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051899213] [2025-03-04 09:29:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051899213] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:29:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549654932] [2025-03-04 09:29:53,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:29:53,255 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:29:53,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:29:53,274 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:29:53,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-03-04 09:29:53,453 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:29:54,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:29:54,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:29:54,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:29:54,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:29:54,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:29:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:29:54,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:29:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:29:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [549654932] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:29:54,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:29:54,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:29:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287226028] [2025-03-04 09:29:54,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:29:54,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:29:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:29:54,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:29:54,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-03-04 09:29:54,475 INFO L87 Difference]: Start difference. First operand 1222 states and 1394 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:30:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:30:00,120 INFO L93 Difference]: Finished difference Result 1624 states and 1920 transitions. [2025-03-04 09:30:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:30:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2025-03-04 09:30:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:30:00,127 INFO L225 Difference]: With dead ends: 1624 [2025-03-04 09:30:00,127 INFO L226 Difference]: Without dead ends: 1620 [2025-03-04 09:30:00,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-03-04 09:30:00,128 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 790 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 5971 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 8253 SdHoareTripleChecker+Invalid, 5993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:30:00,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 8253 Invalid, 5993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5971 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2025-03-04 09:30:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2025-03-04 09:30:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1230. [2025-03-04 09:30:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 811 states have (on average 1.721331689272503) internal successors, (1396), 1223 states have internal predecessors, (1396), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:30:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1405 transitions. [2025-03-04 09:30:00,143 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1405 transitions. Word has length 76 [2025-03-04 09:30:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:30:00,143 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1405 transitions. [2025-03-04 09:30:00,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:30:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1405 transitions. [2025-03-04 09:30:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-04 09:30:00,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:00,144 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:30:00,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2025-03-04 09:30:00,375 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 09:30:00,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:00,545 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:30:00,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1139440674, now seen corresponding path program 1 times [2025-03-04 09:30:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102556841] [2025-03-04 09:30:00,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:30:00,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:00,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:00,547 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 09:30:00,548 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 09:30:00,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-04 09:30:00,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-04 09:30:00,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:30:00,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:30:00,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:30:00,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:30:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:30:00,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:30:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:30:01,239 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:30:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102556841] [2025-03-04 09:30:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102556841] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:30:01,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:30:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:30:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636592066] [2025-03-04 09:30:01,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:30:01,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:30:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:30:01,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:30:01,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:30:01,240 INFO L87 Difference]: Start difference. First operand 1230 states and 1405 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:30:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:30:02,332 INFO L93 Difference]: Finished difference Result 1254 states and 1444 transitions. [2025-03-04 09:30:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:30:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2025-03-04 09:30:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:30:02,334 INFO L225 Difference]: With dead ends: 1254 [2025-03-04 09:30:02,334 INFO L226 Difference]: Without dead ends: 1248 [2025-03-04 09:30:02,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:30:02,335 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 19 mSDsluCounter, 11199 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12220 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:30:02,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12220 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:30:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2025-03-04 09:30:02,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2025-03-04 09:30:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 829 states have (on average 1.7117008443908324) internal successors, (1419), 1241 states have internal predecessors, (1419), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:30:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1428 transitions. [2025-03-04 09:30:02,345 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1428 transitions. Word has length 82 [2025-03-04 09:30:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:30:02,346 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1428 transitions. [2025-03-04 09:30:02,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:30:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1428 transitions. [2025-03-04 09:30:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-04 09:30:02,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:02,346 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:30:02,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 09:30:02,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:02,547 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:30:02,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1658345118, now seen corresponding path program 2 times [2025-03-04 09:30:02,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:02,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922057077] [2025-03-04 09:30:02,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:30:02,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:02,550 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:30:02,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 09:30:02,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes.