./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:42:49,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:42:49,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:42:49,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:42:49,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:42:49,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:42:49,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:42:49,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:42:49,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:42:49,328 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:42:49,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:42:49,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:42:49,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:42:49,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:42:49,329 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:42:49,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:42:49,330 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:42:49,331 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:42:49,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:42:49,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:42:49,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:42:49,332 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-03-17 13:42:49,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:42:49,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:42:49,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:42:49,557 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:42:49,557 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:42:49,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-17 13:42:50,735 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80268cd47/62de54c1b32042ec9e27e844733e9eeb/FLAG92d3bb157 [2025-03-17 13:42:51,043 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:42:51,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-17 13:42:51,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80268cd47/62de54c1b32042ec9e27e844733e9eeb/FLAG92d3bb157 [2025-03-17 13:42:51,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80268cd47/62de54c1b32042ec9e27e844733e9eeb [2025-03-17 13:42:51,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:42:51,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:42:51,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:42:51,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:42:51,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:42:51,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:42:51" (1/1) ... [2025-03-17 13:42:51,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac62136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:51, skipping insertion in model container [2025-03-17 13:42:51,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:42:51" (1/1) ... [2025-03-17 13:42:51,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:42:51,362 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,383 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,388 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,392 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,400 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,409 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,410 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,412 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,414 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,414 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,415 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,418 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:51,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:42:51,436 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-17 13:42:51,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@286f6a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:51, skipping insertion in model container [2025-03-17 13:42:51,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:42:51,437 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:42:51,438 INFO L158 Benchmark]: Toolchain (without parser) took 356.85ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 94.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:42:51,439 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:42:51,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.66ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 94.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:42:51,440 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.66ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 94.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:42:53,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:42:53,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:42:53,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:42:53,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:42:53,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:42:53,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:42:53,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:42:53,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:42:53,255 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:42:53,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:42:53,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:42:53,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:42:53,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:42:53,256 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:42:53,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:42:53,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:42:53,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:42:53,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:42:53,259 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-03-17 13:42:53,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:42:53,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:42:53,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:42:53,523 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:42:53,523 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:42:53,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-17 13:42:54,690 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae051e0c9/1d91b72fcdb94356be05c1ca099deb2c/FLAG8b792d7e0 [2025-03-17 13:42:54,971 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:42:54,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-17 13:42:54,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae051e0c9/1d91b72fcdb94356be05c1ca099deb2c/FLAG8b792d7e0 [2025-03-17 13:42:55,262 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae051e0c9/1d91b72fcdb94356be05c1ca099deb2c [2025-03-17 13:42:55,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:42:55,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:42:55,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:42:55,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:42:55,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:42:55,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36220699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55, skipping insertion in model container [2025-03-17 13:42:55,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:42:55,549 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,579 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,584 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,587 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,591 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,605 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,605 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,606 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,609 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:42:55,626 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:42:55,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:42:55,666 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,681 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,683 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,686 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,705 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,706 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,707 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,709 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,710 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,710 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,712 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:42:55,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:42:55,726 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:42:55,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:42:55,822 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:42:55,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55 WrapperNode [2025-03-17 13:42:55,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:42:55,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:42:55,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:42:55,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:42:55,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,872 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 774 [2025-03-17 13:42:55,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:42:55,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:42:55,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:42:55,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:42:55,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,924 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-03-17 13:42:55,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,948 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:42:55,970 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:42:55,970 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:42:55,970 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:42:55,970 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (1/1) ... [2025-03-17 13:42:55,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:42:55,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:42:55,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:42:55,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:42:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:42:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:42:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:42:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:42:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:42:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:42:56,157 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:42:56,158 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:42:58,611 INFO L? ?]: Removed 904 outVars from TransFormulas that were not future-live. [2025-03-17 13:42:58,613 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:42:58,641 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:42:58,641 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:42:58,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:42:58 BoogieIcfgContainer [2025-03-17 13:42:58,642 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:42:58,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:42:58,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:42:58,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:42:58,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:42:55" (1/3) ... [2025-03-17 13:42:58,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41153397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:42:58, skipping insertion in model container [2025-03-17 13:42:58,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:42:55" (2/3) ... [2025-03-17 13:42:58,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41153397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:42:58, skipping insertion in model container [2025-03-17 13:42:58,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:42:58" (3/3) ... [2025-03-17 13:42:58,650 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2025-03-17 13:42:58,662 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:42:58,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test1-2.i that has 4 procedures, 854 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2025-03-17 13:42:58,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:42:58,731 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;@4d4c7f2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:42:58,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-03-17 13:42:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 411 states have (on average 2.240875912408759) internal successors, (921), 843 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:42:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:42:58,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:42:58,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:42:58,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:42:58,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:42:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash 30351966, now seen corresponding path program 1 times [2025-03-17 13:42:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:42:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242996565] [2025-03-17 13:42:58,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:42:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:42:58,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:42:58,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:42:58,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:42:58,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:42:58,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:42:58,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:42:58,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 13:42:58,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:42:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:58,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:42:58,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:42:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242996565] [2025-03-17 13:42:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242996565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:42:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:42:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:42:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934469784] [2025-03-17 13:42:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:42:58,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 13:42:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:42:58,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 13:42:58,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:42:58,922 INFO L87 Difference]: Start difference. First operand has 849 states, 411 states have (on average 2.240875912408759) internal successors, (921), 843 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:42:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:42:58,977 INFO L93 Difference]: Finished difference Result 839 states and 896 transitions. [2025-03-17 13:42:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 13:42:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:42:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:42:58,997 INFO L225 Difference]: With dead ends: 839 [2025-03-17 13:42:58,998 INFO L226 Difference]: Without dead ends: 837 [2025-03-17 13:42:58,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:42:59,003 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:42:59,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:42:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2025-03-17 13:42:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 837. [2025-03-17 13:42:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 405 states have (on average 2.1432098765432097) internal successors, (868), 831 states have internal predecessors, (868), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:42:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 894 transitions. [2025-03-17 13:42:59,088 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 894 transitions. Word has length 4 [2025-03-17 13:42:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:42:59,088 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 894 transitions. [2025-03-17 13:42:59,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:42:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 894 transitions. [2025-03-17 13:42:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:42:59,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:42:59,089 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:42:59,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:42:59,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:59,294 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:42:59,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:42:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 30351997, now seen corresponding path program 1 times [2025-03-17 13:42:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:42:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775364691] [2025-03-17 13:42:59,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:42:59,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:42:59,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:42:59,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:42:59,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:42:59,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:42:59,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:42:59,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:42:59,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:42:59,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:42:59,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:42:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:59,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:42:59,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:42:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775364691] [2025-03-17 13:42:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775364691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:42:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:42:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:42:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345629356] [2025-03-17 13:42:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:42:59,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:42:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:42:59,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:42:59,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:42:59,424 INFO L87 Difference]: Start difference. First operand 837 states and 894 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:00,506 INFO L93 Difference]: Finished difference Result 789 states and 847 transitions. [2025-03-17 13:43:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:43:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:43:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:00,509 INFO L225 Difference]: With dead ends: 789 [2025-03-17 13:43:00,510 INFO L226 Difference]: Without dead ends: 789 [2025-03-17 13:43:00,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:43:00,510 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 530 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:00,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 648 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:43:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2025-03-17 13:43:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 788. [2025-03-17 13:43:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 405 states have (on average 2.022222222222222) internal successors, (819), 782 states have internal predecessors, (819), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 845 transitions. [2025-03-17 13:43:00,526 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 845 transitions. Word has length 4 [2025-03-17 13:43:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:00,526 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 845 transitions. [2025-03-17 13:43:00,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 845 transitions. [2025-03-17 13:43:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:43:00,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:00,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:43:00,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 13:43:00,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:00,731 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:00,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 30351998, now seen corresponding path program 1 times [2025-03-17 13:43:00,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:00,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59104223] [2025-03-17 13:43:00,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:00,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:00,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:00,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:43:00,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:43:00,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:43:00,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:00,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:00,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:43:00,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:00,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:00,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:00,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59104223] [2025-03-17 13:43:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59104223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:43:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882112591] [2025-03-17 13:43:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:00,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:43:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:00,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:43:00,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:43:00,851 INFO L87 Difference]: Start difference. First operand 788 states and 845 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:02,023 INFO L93 Difference]: Finished difference Result 862 states and 923 transitions. [2025-03-17 13:43:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:43:02,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:43:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:02,027 INFO L225 Difference]: With dead ends: 862 [2025-03-17 13:43:02,027 INFO L226 Difference]: Without dead ends: 862 [2025-03-17 13:43:02,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:43:02,028 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 260 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:02,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1036 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:43:02,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2025-03-17 13:43:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 815. [2025-03-17 13:43:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 442 states have (on average 1.997737556561086) internal successors, (883), 809 states have internal predecessors, (883), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 909 transitions. [2025-03-17 13:43:02,047 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 909 transitions. Word has length 4 [2025-03-17 13:43:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:02,047 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 909 transitions. [2025-03-17 13:43:02,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 909 transitions. [2025-03-17 13:43:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:43:02,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:02,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:43:02,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:02,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:02,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:02,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash 29703569, now seen corresponding path program 1 times [2025-03-17 13:43:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238900878] [2025-03-17 13:43:02,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:02,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:02,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:43:02,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:43:02,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:43:02,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:02,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:02,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:43:02,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:02,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:02,353 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238900878] [2025-03-17 13:43:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238900878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:43:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024084733] [2025-03-17 13:43:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:02,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:43:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:02,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:43:02,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:02,354 INFO L87 Difference]: Start difference. First operand 815 states and 909 transitions. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:02,830 INFO L93 Difference]: Finished difference Result 1112 states and 1248 transitions. [2025-03-17 13:43:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:43:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:43:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:02,836 INFO L225 Difference]: With dead ends: 1112 [2025-03-17 13:43:02,838 INFO L226 Difference]: Without dead ends: 1112 [2025-03-17 13:43:02,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:02,839 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 318 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:02,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2458 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 13:43:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2025-03-17 13:43:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 897. [2025-03-17 13:43:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 524 states have (on average 1.9541984732824427) internal successors, (1024), 891 states have internal predecessors, (1024), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1050 transitions. [2025-03-17 13:43:02,855 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1050 transitions. Word has length 4 [2025-03-17 13:43:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:02,856 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1050 transitions. [2025-03-17 13:43:02,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1050 transitions. [2025-03-17 13:43:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:43:02,856 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:02,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:43:02,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:03,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:03,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:03,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 68290637, now seen corresponding path program 1 times [2025-03-17 13:43:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162984032] [2025-03-17 13:43:03,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:03,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:03,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:03,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:03,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:43:03,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:43:03,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:43:03,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:03,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:03,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 13:43:03,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:03,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:03,149 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162984032] [2025-03-17 13:43:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162984032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:03,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:43:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133463613] [2025-03-17 13:43:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:03,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:43:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:03,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:43:03,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:43:03,150 INFO L87 Difference]: Start difference. First operand 897 states and 1050 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2025-03-17 13:43:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:03,816 INFO L93 Difference]: Finished difference Result 898 states and 1050 transitions. [2025-03-17 13:43:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:43:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2025-03-17 13:43:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:03,819 INFO L225 Difference]: With dead ends: 898 [2025-03-17 13:43:03,819 INFO L226 Difference]: Without dead ends: 893 [2025-03-17 13:43:03,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:43:03,822 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:03,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 13:43:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2025-03-17 13:43:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2025-03-17 13:43:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 520 states have (on average 1.9596153846153845) internal successors, (1019), 887 states have internal predecessors, (1019), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1045 transitions. [2025-03-17 13:43:03,842 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1045 transitions. Word has length 7 [2025-03-17 13:43:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:03,842 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1045 transitions. [2025-03-17 13:43:03,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2025-03-17 13:43:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1045 transitions. [2025-03-17 13:43:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:43:03,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:03,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:43:03,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:04,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:04,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:04,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -708061774, now seen corresponding path program 1 times [2025-03-17 13:43:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528627243] [2025-03-17 13:43:04,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:04,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:04,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:04,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:43:04,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:43:04,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:43:04,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:04,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:04,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:43:04,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:04,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:04,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:04,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528627243] [2025-03-17 13:43:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528627243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:04,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:04,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:43:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093414889] [2025-03-17 13:43:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:04,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:43:04,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:04,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:43:04,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:04,154 INFO L87 Difference]: Start difference. First operand 893 states and 1045 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:05,294 INFO L93 Difference]: Finished difference Result 878 states and 1007 transitions. [2025-03-17 13:43:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:43:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:43:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:05,297 INFO L225 Difference]: With dead ends: 878 [2025-03-17 13:43:05,297 INFO L226 Difference]: Without dead ends: 878 [2025-03-17 13:43:05,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:05,298 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 582 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:05,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 947 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:43:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2025-03-17 13:43:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 870. [2025-03-17 13:43:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 520 states have (on average 1.8711538461538462) internal successors, (973), 864 states have internal predecessors, (973), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 999 transitions. [2025-03-17 13:43:05,323 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 999 transitions. Word has length 9 [2025-03-17 13:43:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:05,324 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 999 transitions. [2025-03-17 13:43:05,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 999 transitions. [2025-03-17 13:43:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:43:05,324 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:05,324 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:43:05,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:05,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:05,525 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:05,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -708061773, now seen corresponding path program 1 times [2025-03-17 13:43:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396671042] [2025-03-17 13:43:05,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:05,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:05,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:05,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:43:05,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:43:05,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:43:05,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:05,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:05,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:43:05,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:05,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:05,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:05,685 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396671042] [2025-03-17 13:43:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396671042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:05,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:05,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:43:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871380448] [2025-03-17 13:43:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:05,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:43:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:05,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:43:05,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:05,686 INFO L87 Difference]: Start difference. First operand 870 states and 999 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:07,116 INFO L93 Difference]: Finished difference Result 1047 states and 1167 transitions. [2025-03-17 13:43:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:43:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:43:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:07,121 INFO L225 Difference]: With dead ends: 1047 [2025-03-17 13:43:07,121 INFO L226 Difference]: Without dead ends: 1047 [2025-03-17 13:43:07,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:07,122 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 384 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:07,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1553 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:43:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2025-03-17 13:43:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 984. [2025-03-17 13:43:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 634 states have (on average 1.752365930599369) internal successors, (1111), 978 states have internal predecessors, (1111), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1137 transitions. [2025-03-17 13:43:07,139 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1137 transitions. Word has length 9 [2025-03-17 13:43:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:07,139 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1137 transitions. [2025-03-17 13:43:07,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1137 transitions. [2025-03-17 13:43:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 13:43:07,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:07,141 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] [2025-03-17 13:43:07,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 13:43:07,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:07,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:07,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1312528001, now seen corresponding path program 1 times [2025-03-17 13:43:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:07,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151241298] [2025-03-17 13:43:07,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:07,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:43:07,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 13:43:07,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 13:43:07,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:07,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:07,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:43:07,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:07,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:07,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:07,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151241298] [2025-03-17 13:43:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151241298] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:43:07,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:43:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:43:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632509089] [2025-03-17 13:43:07,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:43:07,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:43:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:07,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:43:07,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:43:07,931 INFO L87 Difference]: Start difference. First operand 984 states and 1137 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:11,933 INFO L93 Difference]: Finished difference Result 1403 states and 1657 transitions. [2025-03-17 13:43:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:43:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-17 13:43:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:11,938 INFO L225 Difference]: With dead ends: 1403 [2025-03-17 13:43:11,938 INFO L226 Difference]: Without dead ends: 1403 [2025-03-17 13:43:11,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:43:11,940 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 1072 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:11,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2437 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-17 13:43:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2025-03-17 13:43:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1148. [2025-03-17 13:43:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 798 states have (on average 1.6829573934837092) internal successors, (1343), 1142 states have internal predecessors, (1343), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1369 transitions. [2025-03-17 13:43:11,957 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1369 transitions. Word has length 28 [2025-03-17 13:43:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:11,958 INFO L471 AbstractCegarLoop]: Abstraction has 1148 states and 1369 transitions. [2025-03-17 13:43:11,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1369 transitions. [2025-03-17 13:43:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-17 13:43:11,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:11,960 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] [2025-03-17 13:43:11,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:43:12,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:12,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:12,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash 862051514, now seen corresponding path program 1 times [2025-03-17 13:43:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950441093] [2025-03-17 13:43:12,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:12,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:12,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:43:12,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 13:43:12,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 13:43:12,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:12,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:12,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:43:12,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:12,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:12,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950441093] [2025-03-17 13:43:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950441093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:12,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:12,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:43:12,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964999317] [2025-03-17 13:43:12,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:12,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:43:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:12,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:43:12,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:12,345 INFO L87 Difference]: Start difference. First operand 1148 states and 1369 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:12,396 INFO L93 Difference]: Finished difference Result 837 states and 933 transitions. [2025-03-17 13:43:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:43:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2025-03-17 13:43:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:12,400 INFO L225 Difference]: With dead ends: 837 [2025-03-17 13:43:12,400 INFO L226 Difference]: Without dead ends: 837 [2025-03-17 13:43:12,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:12,401 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 56 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2180 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 [2025-03-17 13:43:12,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2180 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:43:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2025-03-17 13:43:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 835. [2025-03-17 13:43:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 508 states have (on average 1.781496062992126) internal successors, (905), 829 states have internal predecessors, (905), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 931 transitions. [2025-03-17 13:43:12,412 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 931 transitions. Word has length 43 [2025-03-17 13:43:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:12,412 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 931 transitions. [2025-03-17 13:43:12,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 931 transitions. [2025-03-17 13:43:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-17 13:43:12,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:12,413 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] [2025-03-17 13:43:12,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:43:12,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:12,614 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:12,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash -245690638, now seen corresponding path program 1 times [2025-03-17 13:43:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:12,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076449964] [2025-03-17 13:43:12,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:12,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:12,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:12,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:43:12,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-17 13:43:12,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-17 13:43:12,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:12,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:12,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:43:12,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:12,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:13,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:43:13,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:43:13,142 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:43:13,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:43:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:13,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:13,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:13,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076449964] [2025-03-17 13:43:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076449964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:13,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:13,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:43:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557120460] [2025-03-17 13:43:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:13,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:43:13,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:13,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:43:13,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:13,151 INFO L87 Difference]: Start difference. First operand 835 states and 931 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 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) [2025-03-17 13:43:14,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:14,303 INFO L93 Difference]: Finished difference Result 797 states and 893 transitions. [2025-03-17 13:43:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:43:14,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 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 [2025-03-17 13:43:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:14,306 INFO L225 Difference]: With dead ends: 797 [2025-03-17 13:43:14,306 INFO L226 Difference]: Without dead ends: 797 [2025-03-17 13:43:14,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:43:14,306 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 819 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:14,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 833 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:43:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-03-17 13:43:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 760. [2025-03-17 13:43:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 471 states have (on average 1.683651804670913) internal successors, (793), 754 states have internal predecessors, (793), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 819 transitions. [2025-03-17 13:43:14,320 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 819 transitions. Word has length 51 [2025-03-17 13:43:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:14,320 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 819 transitions. [2025-03-17 13:43:14,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 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) [2025-03-17 13:43:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 819 transitions. [2025-03-17 13:43:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:43:14,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:14,321 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] [2025-03-17 13:43:14,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 13:43:14,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:14,525 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:14,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1459545073, now seen corresponding path program 1 times [2025-03-17 13:43:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602880422] [2025-03-17 13:43:14,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:14,527 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:14,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:43:14,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:43:14,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:43:14,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:14,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:14,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:43:14,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:14,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:43:14,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:43:14,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:43:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:14,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:14,731 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602880422] [2025-03-17 13:43:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602880422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:14,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:14,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:43:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912157161] [2025-03-17 13:43:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:14,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:43:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:14,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:43:14,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:14,732 INFO L87 Difference]: Start difference. First operand 760 states and 819 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:15,789 INFO L93 Difference]: Finished difference Result 759 states and 818 transitions. [2025-03-17 13:43:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:43:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2025-03-17 13:43:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:15,791 INFO L225 Difference]: With dead ends: 759 [2025-03-17 13:43:15,791 INFO L226 Difference]: Without dead ends: 759 [2025-03-17 13:43:15,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:43:15,792 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 2 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:15,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1874 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:43:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-03-17 13:43:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2025-03-17 13:43:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 471 states have (on average 1.6815286624203822) internal successors, (792), 753 states have internal predecessors, (792), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 818 transitions. [2025-03-17 13:43:15,799 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 818 transitions. Word has length 56 [2025-03-17 13:43:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:15,799 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 818 transitions. [2025-03-17 13:43:15,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 818 transitions. [2025-03-17 13:43:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:43:15,800 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:15,800 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] [2025-03-17 13:43:15,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:16,004 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:16,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1459545074, now seen corresponding path program 1 times [2025-03-17 13:43:16,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:16,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652272521] [2025-03-17 13:43:16,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:16,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:16,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:16,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:16,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:43:16,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:43:16,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:43:16,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:16,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:16,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:43:16,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:16,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:43:16,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:43:16,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:43:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:16,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:16,236 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652272521] [2025-03-17 13:43:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652272521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:16,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:16,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:43:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981771175] [2025-03-17 13:43:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:16,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:43:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:16,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:43:16,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:43:16,237 INFO L87 Difference]: Start difference. First operand 759 states and 818 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:17,545 INFO L93 Difference]: Finished difference Result 758 states and 817 transitions. [2025-03-17 13:43:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:43:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2025-03-17 13:43:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:17,548 INFO L225 Difference]: With dead ends: 758 [2025-03-17 13:43:17,548 INFO L226 Difference]: Without dead ends: 758 [2025-03-17 13:43:17,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:43:17,548 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 1 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:17,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1897 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:43:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2025-03-17 13:43:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2025-03-17 13:43:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 470 states have (on average 1.6829787234042553) internal successors, (791), 752 states have internal predecessors, (791), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:43:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 817 transitions. [2025-03-17 13:43:17,556 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 817 transitions. Word has length 56 [2025-03-17 13:43:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:17,556 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 817 transitions. [2025-03-17 13:43:17,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:43:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 817 transitions. [2025-03-17 13:43:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:43:17,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:17,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:43:17,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:43:17,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:17,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:17,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -159101138, now seen corresponding path program 1 times [2025-03-17 13:43:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366048323] [2025-03-17 13:43:17,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:17,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:17,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:43:17,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:43:17,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:43:17,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:17,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:17,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:43:17,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:17,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:43:17,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:43:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:17,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:17,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366048323] [2025-03-17 13:43:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366048323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:43:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350228480] [2025-03-17 13:43:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:17,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:43:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:17,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:43:17,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:43:17,981 INFO L87 Difference]: Start difference. First operand 758 states and 817 transitions. Second operand has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:43:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:19,688 INFO L93 Difference]: Finished difference Result 770 states and 832 transitions. [2025-03-17 13:43:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:43:19,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2025-03-17 13:43:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:19,691 INFO L225 Difference]: With dead ends: 770 [2025-03-17 13:43:19,691 INFO L226 Difference]: Without dead ends: 770 [2025-03-17 13:43:19,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:43:19,691 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 12 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:19,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2877 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:43:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2025-03-17 13:43:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 764. [2025-03-17 13:43:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 475 states have (on average 1.68) internal successors, (798), 757 states have internal predecessors, (798), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-17 13:43:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 827 transitions. [2025-03-17 13:43:19,703 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 827 transitions. Word has length 64 [2025-03-17 13:43:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:19,704 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 827 transitions. [2025-03-17 13:43:19,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:43:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 827 transitions. [2025-03-17 13:43:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:43:19,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:19,706 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] [2025-03-17 13:43:19,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 13:43:19,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:19,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:19,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash -159101137, now seen corresponding path program 1 times [2025-03-17 13:43:19,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:19,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354111908] [2025-03-17 13:43:19,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:19,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:19,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:43:20,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:43:20,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:43:20,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:20,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:20,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:43:20,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:20,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:43:20,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354111908] [2025-03-17 13:43:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354111908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:43:20,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:43:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:43:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713849953] [2025-03-17 13:43:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:43:20,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:43:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:20,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:43:20,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:20,093 INFO L87 Difference]: Start difference. First operand 764 states and 827 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:43:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:20,116 INFO L93 Difference]: Finished difference Result 761 states and 821 transitions. [2025-03-17 13:43:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:43:20,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2025-03-17 13:43:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:20,119 INFO L225 Difference]: With dead ends: 761 [2025-03-17 13:43:20,119 INFO L226 Difference]: Without dead ends: 761 [2025-03-17 13:43:20,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:43:20,119 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 0 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:20,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2164 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:43:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-17 13:43:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-03-17 13:43:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 472 states have (on average 1.6822033898305084) internal successors, (794), 755 states have internal predecessors, (794), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:43:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 821 transitions. [2025-03-17 13:43:20,129 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 821 transitions. Word has length 64 [2025-03-17 13:43:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:20,129 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 821 transitions. [2025-03-17 13:43:20,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:43:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 821 transitions. [2025-03-17 13:43:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 13:43:20,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:20,130 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] [2025-03-17 13:43:20,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:43:20,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:20,331 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:20,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1779808134, now seen corresponding path program 1 times [2025-03-17 13:43:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:20,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781123953] [2025-03-17 13:43:20,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:20,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:20,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:20,333 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:20,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:43:20,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 13:43:20,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 13:43:20,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:20,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:20,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:43:20,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:20,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:20,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781123953] [2025-03-17 13:43:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781123953] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:43:20,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:43:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:43:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889905293] [2025-03-17 13:43:20,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:43:20,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:43:20,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:20,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:43:20,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:43:20,578 INFO L87 Difference]: Start difference. First operand 761 states and 821 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:43:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:20,680 INFO L93 Difference]: Finished difference Result 773 states and 838 transitions. [2025-03-17 13:43:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:43:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 65 [2025-03-17 13:43:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:20,683 INFO L225 Difference]: With dead ends: 773 [2025-03-17 13:43:20,683 INFO L226 Difference]: Without dead ends: 773 [2025-03-17 13:43:20,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:43:20,684 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 8 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:20,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2883 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:43:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2025-03-17 13:43:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 771. [2025-03-17 13:43:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 481 states have (on average 1.681912681912682) internal successors, (809), 764 states have internal predecessors, (809), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:43:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 836 transitions. [2025-03-17 13:43:20,696 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 836 transitions. Word has length 65 [2025-03-17 13:43:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:20,696 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 836 transitions. [2025-03-17 13:43:20,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:43:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 836 transitions. [2025-03-17 13:43:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:43:20,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:20,697 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] [2025-03-17 13:43:20,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:43:20,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:20,898 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:20,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 63415598, now seen corresponding path program 2 times [2025-03-17 13:43:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290983514] [2025-03-17 13:43:20,899 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:43:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:20,900 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:20,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:43:21,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:43:34,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:43:34,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:43:34,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:34,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 13:43:34,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:34,267 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:43:34,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:43:34,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:43:34,408 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:43:34,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:43:34,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-17 13:43:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:43:34,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:34,512 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:43:34,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-17 13:43:34,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-03-17 13:43:34,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290983514] [2025-03-17 13:43:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290983514] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:43:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1289018508] [2025-03-17 13:43:34,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:43:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:43:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:43:34,526 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:43:34,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2025-03-17 13:43:34,674 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:43:35,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:43:35,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:43:35,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:35,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:43:35,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:35,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1289018508] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:43:35,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:43:35,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:43:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225532120] [2025-03-17 13:43:35,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:43:35,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:43:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:35,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:43:35,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-17 13:43:35,507 INFO L87 Difference]: Start difference. First operand 771 states and 836 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:43:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:39,879 INFO L93 Difference]: Finished difference Result 787 states and 859 transitions. [2025-03-17 13:43:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 13:43:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 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 68 [2025-03-17 13:43:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:39,881 INFO L225 Difference]: With dead ends: 787 [2025-03-17 13:43:39,881 INFO L226 Difference]: Without dead ends: 783 [2025-03-17 13:43:39,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-17 13:43:39,882 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 490 mSDsluCounter, 5230 mSDsCounter, 0 mSdLazyCounter, 4173 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 5716 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:39,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 5716 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4173 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-17 13:43:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-03-17 13:43:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 779. [2025-03-17 13:43:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 490 states have (on average 1.6734693877551021) internal successors, (820), 772 states have internal predecessors, (820), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:43:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 847 transitions. [2025-03-17 13:43:39,892 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 847 transitions. Word has length 68 [2025-03-17 13:43:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:39,892 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 847 transitions. [2025-03-17 13:43:39,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:43:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 847 transitions. [2025-03-17 13:43:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 13:43:39,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:39,893 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] [2025-03-17 13:43:39,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:43:40,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2025-03-17 13:43:40,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-17 13:43:40,294 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:40,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1499596335, now seen corresponding path program 1 times [2025-03-17 13:43:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004327967] [2025-03-17 13:43:40,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:43:40,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:40,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:40,297 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:40,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:43:40,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 13:43:40,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 13:43:40,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:43:40,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:40,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:43:40,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:40,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:40,974 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004327967] [2025-03-17 13:43:40,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004327967] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:43:40,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:43:40,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:43:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074638759] [2025-03-17 13:43:40,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:43:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:43:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:40,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:43:40,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:43:40,975 INFO L87 Difference]: Start difference. First operand 779 states and 847 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:43:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:43:42,058 INFO L93 Difference]: Finished difference Result 803 states and 886 transitions. [2025-03-17 13:43:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:43:42,059 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 74 [2025-03-17 13:43:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:43:42,061 INFO L225 Difference]: With dead ends: 803 [2025-03-17 13:43:42,061 INFO L226 Difference]: Without dead ends: 797 [2025-03-17 13:43:42,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:43:42,061 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 22 mSDsluCounter, 7922 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8645 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:43:42,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8645 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:43:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-03-17 13:43:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2025-03-17 13:43:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 508 states have (on average 1.6594488188976377) internal successors, (843), 790 states have internal predecessors, (843), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:43:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 870 transitions. [2025-03-17 13:43:42,069 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 870 transitions. Word has length 74 [2025-03-17 13:43:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:43:42,070 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 870 transitions. [2025-03-17 13:43:42,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:43:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 870 transitions. [2025-03-17 13:43:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:43:42,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:43:42,070 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] [2025-03-17 13:43:42,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-17 13:43:42,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:42,275 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:43:42,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:43:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 872450095, now seen corresponding path program 2 times [2025-03-17 13:43:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:43:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588696098] [2025-03-17 13:43:42,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:43:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:43:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:43:42,277 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:43:42,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 13:43:42,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:43:53,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:43:53,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:43:53,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:53,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-17 13:43:53,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:53,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:43:53,453 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:43:53,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:43:53,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:43:53,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:43:53,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:43:53,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:43:53,874 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:43:53,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:43:53,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:43:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:43:53,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:43:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-17 13:43:53,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:54,292 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1426) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1427) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2025-03-17 13:43:54,297 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:43:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588696098] [2025-03-17 13:43:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588696098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:43:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1292663850] [2025-03-17 13:43:54,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:43:54,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:43:54,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:43:54,299 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:43:54,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2025-03-17 13:43:54,498 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:43:55,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:43:55,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:43:55,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:43:55,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 13:43:55,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:43:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:55,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:43:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:43:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1292663850] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:43:57,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:43:57,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-17 13:43:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778933970] [2025-03-17 13:43:57,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:43:57,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 13:43:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:43:57,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 13:43:57,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-17 13:43:57,484 INFO L87 Difference]: Start difference. First operand 797 states and 870 transitions. Second operand has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:44:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:14,654 INFO L93 Difference]: Finished difference Result 842 states and 946 transitions. [2025-03-17 13:44:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-03-17 13:44:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 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 86 [2025-03-17 13:44:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:14,657 INFO L225 Difference]: With dead ends: 842 [2025-03-17 13:44:14,657 INFO L226 Difference]: Without dead ends: 832 [2025-03-17 13:44:14,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3205, Invalid=15430, Unknown=1, NotChecked=270, Total=18906 [2025-03-17 13:44:14,660 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 502 mSDsluCounter, 12927 mSDsCounter, 0 mSdLazyCounter, 10099 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 13419 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 10099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:14,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 13419 Invalid, 10128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 10099 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2025-03-17 13:44:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2025-03-17 13:44:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2025-03-17 13:44:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 544 states have (on average 1.6286764705882353) internal successors, (886), 825 states have internal predecessors, (886), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:44:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 913 transitions. [2025-03-17 13:44:14,667 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 913 transitions. Word has length 86 [2025-03-17 13:44:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:14,667 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 913 transitions. [2025-03-17 13:44:14,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:44:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 913 transitions. [2025-03-17 13:44:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-17 13:44:14,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:14,668 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:14,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2025-03-17 13:44:14,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:44:15,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:15,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:44:15,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1820867613, now seen corresponding path program 1 times [2025-03-17 13:44:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521153416] [2025-03-17 13:44:15,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:15,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:15,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:15,078 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:15,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 13:44:15,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-17 13:44:15,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-17 13:44:15,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:15,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:15,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-03-17 13:44:15,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:15,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:44:15,485 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:44:15,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:44:15,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:44:15,935 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:44:15,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:44:15,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:44:15,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:44:16,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-17 13:44:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-03-17 13:44:16,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:44:16,084 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2053 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2053) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-17 13:44:16,373 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2025-03-17 13:44:16,374 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 37 treesize of output 36 [2025-03-17 13:44:16,382 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2053 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2099))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2053)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem32#1.base|)) is different from false [2025-03-17 13:44:16,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521153416] [2025-03-17 13:44:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521153416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:44:16,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298028972] [2025-03-17 13:44:16,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:16,384 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:44:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:44:16,386 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:44:16,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-03-17 13:44:16,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-17 13:44:18,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-17 13:44:18,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:18,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:18,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-17 13:44:18,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:18,234 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 13:44:18,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-03-17 13:44:18,604 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2025-03-17 13:44:18,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2025-03-17 13:44:18,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 13:44:18,808 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 28 treesize of output 16 [2025-03-17 13:44:19,780 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 13:44:19,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2025-03-17 13:44:19,905 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 13:44:19,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2025-03-17 13:44:19,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2025-03-17 13:44:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-03-17 13:44:19,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:44:19,998 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2506) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2025-03-17 13:44:20,003 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-17 13:44:20,281 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2552 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2552))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2506)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-17 13:44:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1298028972] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:44:20,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:44:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2025-03-17 13:44:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671442974] [2025-03-17 13:44:20,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:44:20,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 13:44:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:20,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 13:44:20,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=417, Unknown=12, NotChecked=230, Total=756 [2025-03-17 13:44:20,284 INFO L87 Difference]: Start difference. First operand 832 states and 913 transitions. Second operand has 21 states, 18 states have (on average 7.444444444444445) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:44:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:26,106 INFO L93 Difference]: Finished difference Result 1524 states and 1676 transitions. [2025-03-17 13:44:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 13:44:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.444444444444445) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2025-03-17 13:44:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:26,110 INFO L225 Difference]: With dead ends: 1524 [2025-03-17 13:44:26,110 INFO L226 Difference]: Without dead ends: 1524 [2025-03-17 13:44:26,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=1120, Unknown=16, NotChecked=370, Total=1722 [2025-03-17 13:44:26,110 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 1668 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 5023 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 4766 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 5023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:26,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 4766 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 5023 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-17 13:44:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2025-03-17 13:44:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 831. [2025-03-17 13:44:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 544 states have (on average 1.6268382352941178) internal successors, (885), 824 states have internal predecessors, (885), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-17 13:44:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 912 transitions. [2025-03-17 13:44:26,120 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 912 transitions. Word has length 111 [2025-03-17 13:44:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:26,120 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 912 transitions. [2025-03-17 13:44:26,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.444444444444445) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:44:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 912 transitions. [2025-03-17 13:44:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-17 13:44:26,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:26,121 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:26,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 13:44:26,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2025-03-17 13:44:26,522 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,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-17 13:44:26,522 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-17 13:44:26,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1820867612, now seen corresponding path program 1 times [2025-03-17 13:44:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967096620] [2025-03-17 13:44:26,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:26,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:26,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:26,524 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:26,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 13:44:26,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-17 13:44:26,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-17 13:44:26,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:26,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:26,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 110 conjuncts are in the unsatisfiable core [2025-03-17 13:44:26,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:26,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:26,967 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:44:26,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:44:26,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:44:26,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:44:27,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:44:27,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3