./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.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_SFH_test9-2.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 cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:56:33,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:56:34,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:56:34,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:56:34,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:56:34,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:56:34,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:56:34,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:56:34,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:56:34,034 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:56:34,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:56:34,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:56:34,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:56:34,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:56:34,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:56:34,036 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:56:34,037 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:56:34,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:56:34,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:56:34,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:56:34,038 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 -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2025-03-17 13:56:34,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:56:34,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:56:34,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:56:34,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:56:34,260 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:56:34,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-17 13:56:35,422 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aef6370/32d300b9e8b347718127f1494b4e6b5e/FLAG7268749bd [2025-03-17 13:56:35,785 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:56:35,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-17 13:56:35,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aef6370/32d300b9e8b347718127f1494b4e6b5e/FLAG7268749bd [2025-03-17 13:56:35,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64aef6370/32d300b9e8b347718127f1494b4e6b5e [2025-03-17 13:56:35,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:56:35,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:56:35,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:56:35,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:56:35,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:56:35,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:56:35" (1/1) ... [2025-03-17 13:56:35,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8b4742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:35, skipping insertion in model container [2025-03-17 13:56:35,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:56:35" (1/1) ... [2025-03-17 13:56:35,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:56:36,287 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 13:56:36,306 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:36,308 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 13:56:36,311 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 13:56:36,316 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 13:56:36,335 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 13:56:36,335 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 13:56:36,336 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 13:56:36,336 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 13:56:36,339 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:36,340 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 13:56:36,342 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:36,343 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 13:56:36,344 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 13:56:36,346 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:36,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:56:36,360 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 13:56:36,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65ca1124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:36, skipping insertion in model container [2025-03-17 13:56:36,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:56:36,361 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:56:36,362 INFO L158 Benchmark]: Toolchain (without parser) took 533.66ms. Allocated memory is still 167.8MB. Free memory was 125.4MB in the beginning and 94.3MB in the end (delta: 31.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:56:36,363 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:56:36,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.06ms. Allocated memory is still 167.8MB. Free memory was 125.4MB in the beginning and 94.7MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:56:36,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.06ms. Allocated memory is still 167.8MB. Free memory was 125.4MB in the beginning and 94.7MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2239]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.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 cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:56:38,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:56:38,125 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:56:38,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:56:38,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:56:38,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:56:38,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:56:38,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:56:38,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:56:38,154 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:56:38,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:56:38,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:56:38,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:56:38,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:56:38,155 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:56:38,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:56:38,156 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:56:38,157 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:56:38,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:56:38,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:56:38,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:56:38,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:56:38,159 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 -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2025-03-17 13:56:38,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:56:38,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:56:38,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:56:38,401 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:56:38,401 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:56:38,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-17 13:56:39,593 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb033ff86/285c941d8748409686694005e16602d4/FLAG12eed9575 [2025-03-17 13:56:39,898 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:56:39,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-17 13:56:39,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb033ff86/285c941d8748409686694005e16602d4/FLAG12eed9575 [2025-03-17 13:56:40,158 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb033ff86/285c941d8748409686694005e16602d4 [2025-03-17 13:56:40,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:56:40,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:56:40,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:56:40,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:56:40,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:56:40,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:40,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ccb789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40, skipping insertion in model container [2025-03-17 13:56:40,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:40,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:56:40,574 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 13:56:40,595 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:40,598 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:40,600 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 13:56:40,604 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 13:56:40,629 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 13:56:40,631 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 13:56:40,634 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 13:56:40,635 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 13:56:40,636 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 13:56:40,638 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 13:56:40,640 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 13:56:40,641 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 13:56:40,644 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 13:56:40,647 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 13:56:40,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:56:40,662 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:56:40,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:56:40,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:56:40,756 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 13:56:40,758 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 13:56:40,761 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 13:56:40,764 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 13:56:40,782 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 13:56:40,784 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 13:56:40,785 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 13:56:40,785 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 13:56:40,787 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 13:56:40,787 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 13:56:40,788 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 13:56:40,788 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 13:56:40,788 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 13:56:40,791 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 13:56:40,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:56:40,796 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:56:40,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:56:40,896 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:56:40,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40 WrapperNode [2025-03-17 13:56:40,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:56:40,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:56:40,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:56:40,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:56:40,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:40,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,026 INFO L138 Inliner]: procedures = 180, calls = 775, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3017 [2025-03-17 13:56:41,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:56:41,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:56:41,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:56:41,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:56:41,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,123 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-17 13:56:41,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,170 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:56:41,211 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:56:41,211 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:56:41,211 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:56:41,212 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (1/1) ... [2025-03-17 13:56:41,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:56:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:56:41,237 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 13:56:41,239 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 13:56:41,256 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:56:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:56:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:56:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:56:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:56:41,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:56:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:56:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:56:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:56:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:56:41,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:56:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:56:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:56:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:56:41,439 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:56:41,440 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:56:45,051 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:56:45,287 INFO L? ?]: Removed 1595 outVars from TransFormulas that were not future-live. [2025-03-17 13:56:45,287 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:56:45,337 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:56:45,340 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:56:45,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:56:45 BoogieIcfgContainer [2025-03-17 13:56:45,340 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:56:45,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:56:45,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:56:45,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:56:45,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:56:40" (1/3) ... [2025-03-17 13:56:45,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18585665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:56:45, skipping insertion in model container [2025-03-17 13:56:45,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:56:40" (2/3) ... [2025-03-17 13:56:45,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18585665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:56:45, skipping insertion in model container [2025-03-17 13:56:45,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:56:45" (3/3) ... [2025-03-17 13:56:45,349 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2025-03-17 13:56:45,358 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:56:45,360 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test9-2.i that has 6 procedures, 2074 locations, 1 initial locations, 36 loop locations, and 529 error locations. [2025-03-17 13:56:45,422 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:56:45,432 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;@700b24f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:56:45,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-03-17 13:56:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 2064 states, 1029 states have (on average 2.1146744412050533) internal successors, (2176), 2057 states have internal predecessors, (2176), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2025-03-17 13:56:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:56:45,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:56:45,446 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:56:45,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:56:45,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:56:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 134911, now seen corresponding path program 1 times [2025-03-17 13:56:45,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:56:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120665001] [2025-03-17 13:56:45,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:56:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:56:45,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:56:45,460 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 13:56:45,462 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 13:56:45,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:56:45,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:56:45,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:56:45,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:56:45,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:56:45,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:56:45,631 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 13:56:45,645 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 13:56:45,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:56:45,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:56:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120665001] [2025-03-17 13:56:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120665001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:56:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:56:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:56:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230466576] [2025-03-17 13:56:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:56:45,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:56:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:56:45,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:56:45,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:56:45,669 INFO L87 Difference]: Start difference. First operand has 2064 states, 1029 states have (on average 2.1146744412050533) internal successors, (2176), 2057 states have internal predecessors, (2176), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:56:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:56:47,423 INFO L93 Difference]: Finished difference Result 2228 states and 3295 transitions. [2025-03-17 13:56:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:56:47,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-03-17 13:56:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:56:47,444 INFO L225 Difference]: With dead ends: 2228 [2025-03-17 13:56:47,445 INFO L226 Difference]: Without dead ends: 2226 [2025-03-17 13:56:47,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:56:47,447 INFO L435 NwaCegarLoop]: 2631 mSDtfsCounter, 1966 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:56:47,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 2785 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:56:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2025-03-17 13:56:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2048. [2025-03-17 13:56:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1031 states have (on average 2.034917555771096) internal successors, (2098), 2041 states have internal predecessors, (2098), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-03-17 13:56:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 3106 transitions. [2025-03-17 13:56:47,723 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 3106 transitions. Word has length 2 [2025-03-17 13:56:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:56:47,724 INFO L471 AbstractCegarLoop]: Abstraction has 2048 states and 3106 transitions. [2025-03-17 13:56:47,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:56:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 3106 transitions. [2025-03-17 13:56:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:56:47,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:56:47,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:56:47,730 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 13:56:47,925 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 13:56:47,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:56:47,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:56:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash 134912, now seen corresponding path program 1 times [2025-03-17 13:56:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:56:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653382216] [2025-03-17 13:56:47,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:56:47,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:56:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:56:47,930 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 13:56:47,930 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 13:56:48,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:56:48,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:56:48,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:56:48,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:56:48,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:56:48,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:56:48,025 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 13:56:48,033 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 13:56:48,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:56:48,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:56:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653382216] [2025-03-17 13:56:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653382216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:56:48,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:56:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:56:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133944602] [2025-03-17 13:56:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:56:48,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:56:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:56:48,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:56:48,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:56:48,035 INFO L87 Difference]: Start difference. First operand 2048 states and 3106 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:56:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:56:50,247 INFO L93 Difference]: Finished difference Result 3460 states and 5551 transitions. [2025-03-17 13:56:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:56:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-03-17 13:56:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:56:50,262 INFO L225 Difference]: With dead ends: 3460 [2025-03-17 13:56:50,262 INFO L226 Difference]: Without dead ends: 3460 [2025-03-17 13:56:50,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:56:50,263 INFO L435 NwaCegarLoop]: 3005 mSDtfsCounter, 1444 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:56:50,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 5084 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:56:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2025-03-17 13:56:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3173. [2025-03-17 13:56:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 1657 states have (on average 2.0102595051297527) internal successors, (3331), 3166 states have internal predecessors, (3331), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:56:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5339 transitions. [2025-03-17 13:56:50,479 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5339 transitions. Word has length 2 [2025-03-17 13:56:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:56:50,479 INFO L471 AbstractCegarLoop]: Abstraction has 3173 states and 5339 transitions. [2025-03-17 13:56:50,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:56:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5339 transitions. [2025-03-17 13:56:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:56:50,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:56:50,479 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:56:50,486 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 13:56:50,684 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 13:56:50,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:56:50,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:56:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash 166811739, now seen corresponding path program 1 times [2025-03-17 13:56:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:56:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619593208] [2025-03-17 13:56:50,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:56:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:56:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:56:50,689 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 13:56:50,690 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 13:56:50,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:56:50,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:56:50,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:56:50,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:56:50,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:56:50,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:56:50,844 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 13:56:50,889 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 13:56:50,890 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 12 treesize of output 18 [2025-03-17 13:56:50,953 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 13:56:50,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:56:50,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:56:50,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619593208] [2025-03-17 13:56:50,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619593208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:56:50,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:56:50,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:56:50,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054430237] [2025-03-17 13:56:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:56:50,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:56:50,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:56:50,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:56:50,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:56:50,955 INFO L87 Difference]: Start difference. First operand 3173 states and 5339 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:56:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:56:58,082 INFO L93 Difference]: Finished difference Result 5156 states and 8296 transitions. [2025-03-17 13:56:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:56:58,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:56:58,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:56:58,101 INFO L225 Difference]: With dead ends: 5156 [2025-03-17 13:56:58,101 INFO L226 Difference]: Without dead ends: 5156 [2025-03-17 13:56:58,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:56:58,104 INFO L435 NwaCegarLoop]: 5020 mSDtfsCounter, 3181 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:56:58,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 8178 Invalid, 4570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2025-03-17 13:56:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2025-03-17 13:56:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 3319. [2025-03-17 13:56:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 1803 states have (on average 2.004991680532446) internal successors, (3615), 3312 states have internal predecessors, (3615), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:56:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 5623 transitions. [2025-03-17 13:56:58,348 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 5623 transitions. Word has length 6 [2025-03-17 13:56:58,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:56:58,348 INFO L471 AbstractCegarLoop]: Abstraction has 3319 states and 5623 transitions. [2025-03-17 13:56:58,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:56:58,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 5623 transitions. [2025-03-17 13:56:58,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:56:58,349 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:56:58,349 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:56:58,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 13:56:58,553 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 13:56:58,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:56:58,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:56:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash 876200719, now seen corresponding path program 1 times [2025-03-17 13:56:58,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:56:58,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588538416] [2025-03-17 13:56:58,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:56:58,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:56:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:56:58,556 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 13:56:58,557 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 13:56:58,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:56:58,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:56:58,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:56:58,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:56:58,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:56:58,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:56:58,652 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 13:56:58,663 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 13:56:58,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:56:58,663 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:56:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588538416] [2025-03-17 13:56:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588538416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:56:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:56:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:56:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872934289] [2025-03-17 13:56:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:56:58,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:56:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:56:58,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:56:58,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:56:58,664 INFO L87 Difference]: Start difference. First operand 3319 states and 5623 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:00,236 INFO L93 Difference]: Finished difference Result 4486 states and 7801 transitions. [2025-03-17 13:57:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:57:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:00,254 INFO L225 Difference]: With dead ends: 4486 [2025-03-17 13:57:00,255 INFO L226 Difference]: Without dead ends: 4486 [2025-03-17 13:57:00,255 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 13:57:00,258 INFO L435 NwaCegarLoop]: 4800 mSDtfsCounter, 1759 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 7056 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:00,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 7056 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:57:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2025-03-17 13:57:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3272. [2025-03-17 13:57:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 1803 states have (on average 1.9728230726566833) internal successors, (3557), 3265 states have internal predecessors, (3557), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5565 transitions. [2025-03-17 13:57:00,496 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5565 transitions. Word has length 7 [2025-03-17 13:57:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:00,497 INFO L471 AbstractCegarLoop]: Abstraction has 3272 states and 5565 transitions. [2025-03-17 13:57:00,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5565 transitions. [2025-03-17 13:57:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:57:00,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:00,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:00,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:57:00,698 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 13:57:00,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:00,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 876200720, now seen corresponding path program 1 times [2025-03-17 13:57:00,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:00,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937182484] [2025-03-17 13:57:00,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:00,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:00,701 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 13:57:00,702 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 13:57:00,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:57:00,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:57:00,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:00,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:00,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:57:00,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:00,795 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 13:57:00,816 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 13:57:00,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:00,816 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937182484] [2025-03-17 13:57:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937182484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:00,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:00,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:57:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872577670] [2025-03-17 13:57:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:00,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:57:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:00,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:57:00,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:57:00,817 INFO L87 Difference]: Start difference. First operand 3272 states and 5565 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:02,898 INFO L93 Difference]: Finished difference Result 5696 states and 10111 transitions. [2025-03-17 13:57:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:57:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:02,924 INFO L225 Difference]: With dead ends: 5696 [2025-03-17 13:57:02,924 INFO L226 Difference]: Without dead ends: 5696 [2025-03-17 13:57:02,924 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 13:57:02,925 INFO L435 NwaCegarLoop]: 4952 mSDtfsCounter, 1511 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 7375 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:02,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 7375 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:57:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2025-03-17 13:57:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 3299. [2025-03-17 13:57:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 1840 states have (on average 1.9619565217391304) internal successors, (3610), 3292 states have internal predecessors, (3610), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5618 transitions. [2025-03-17 13:57:03,220 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5618 transitions. Word has length 7 [2025-03-17 13:57:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:03,220 INFO L471 AbstractCegarLoop]: Abstraction has 3299 states and 5618 transitions. [2025-03-17 13:57:03,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 13:57:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5618 transitions. [2025-03-17 13:57:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 13:57:03,221 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:03,221 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:03,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:57:03,421 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 13:57:03,421 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1207417634, now seen corresponding path program 1 times [2025-03-17 13:57:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689718593] [2025-03-17 13:57:03,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:03,424 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 13:57:03,425 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 13:57:03,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:57:03,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:57:03,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:03,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:03,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:57:03,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:03,577 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 13:57:03,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:03,578 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689718593] [2025-03-17 13:57:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689718593] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:03,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:03,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:57:03,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620697676] [2025-03-17 13:57:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:03,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:57:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:03,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:57:03,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:57:03,579 INFO L87 Difference]: Start difference. First operand 3299 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:03,782 INFO L93 Difference]: Finished difference Result 4553 states and 7768 transitions. [2025-03-17 13:57:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:57:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-17 13:57:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:03,804 INFO L225 Difference]: With dead ends: 4553 [2025-03-17 13:57:03,805 INFO L226 Difference]: Without dead ends: 4553 [2025-03-17 13:57:03,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 13:57:03,805 INFO L435 NwaCegarLoop]: 3108 mSDtfsCounter, 1467 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 6063 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:03,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 6063 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:57:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2025-03-17 13:57:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4284. [2025-03-17 13:57:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 2325 states have (on average 1.9617204301075268) internal successors, (4561), 4277 states have internal predecessors, (4561), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:57:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 7569 transitions. [2025-03-17 13:57:04,105 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 7569 transitions. Word has length 10 [2025-03-17 13:57:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:04,105 INFO L471 AbstractCegarLoop]: Abstraction has 4284 states and 7569 transitions. [2025-03-17 13:57:04,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 7569 transitions. [2025-03-17 13:57:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:57:04,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:04,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:04,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:57:04,306 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 13:57:04,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr196REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:04,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1323943371, now seen corresponding path program 1 times [2025-03-17 13:57:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:04,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249502140] [2025-03-17 13:57:04,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:04,311 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 13:57:04,313 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 13:57:04,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:57:04,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:57:04,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:04,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:04,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:57:04,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:04,434 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 13:57:04,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:04,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249502140] [2025-03-17 13:57:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249502140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:57:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540091523] [2025-03-17 13:57:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:04,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:04,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:04,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:04,436 INFO L87 Difference]: Start difference. First operand 4284 states and 7569 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:07,039 INFO L93 Difference]: Finished difference Result 4451 states and 7699 transitions. [2025-03-17 13:57:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:57:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:07,049 INFO L225 Difference]: With dead ends: 4451 [2025-03-17 13:57:07,049 INFO L226 Difference]: Without dead ends: 4451 [2025-03-17 13:57:07,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:07,049 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1964 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:07,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 4226 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 13:57:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2025-03-17 13:57:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4261. [2025-03-17 13:57:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 2325 states have (on average 1.9320430107526883) internal successors, (4492), 4254 states have internal predecessors, (4492), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:57:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 7500 transitions. [2025-03-17 13:57:07,292 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 7500 transitions. Word has length 11 [2025-03-17 13:57:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:07,292 INFO L471 AbstractCegarLoop]: Abstraction has 4261 states and 7500 transitions. [2025-03-17 13:57:07,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13:57:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 7500 transitions. [2025-03-17 13:57:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:57:07,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:07,292 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:07,298 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 13:57:07,496 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 13:57:07,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr197REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:07,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1323943372, now seen corresponding path program 1 times [2025-03-17 13:57:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849269006] [2025-03-17 13:57:07,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:07,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:07,500 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 13:57:07,502 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 13:57:07,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:57:07,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:57:07,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:07,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:07,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:57:07,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:07,605 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 13:57:07,662 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 13:57:07,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:07,663 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:07,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849269006] [2025-03-17 13:57:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849269006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:07,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:07,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:57:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483746175] [2025-03-17 13:57:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:07,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:07,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:07,664 INFO L87 Difference]: Start difference. First operand 4261 states and 7500 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:10,772 INFO L93 Difference]: Finished difference Result 4455 states and 7669 transitions. [2025-03-17 13:57:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:10,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:57:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:10,782 INFO L225 Difference]: With dead ends: 4455 [2025-03-17 13:57:10,783 INFO L226 Difference]: Without dead ends: 4455 [2025-03-17 13:57:10,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:10,783 INFO L435 NwaCegarLoop]: 2893 mSDtfsCounter, 1337 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 6411 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:10,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 6411 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-17 13:57:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2025-03-17 13:57:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4242. [2025-03-17 13:57:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 2306 states have (on average 1.9297484822202948) internal successors, (4450), 4235 states have internal predecessors, (4450), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:57:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 7458 transitions. [2025-03-17 13:57:11,012 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 7458 transitions. Word has length 11 [2025-03-17 13:57:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:11,012 INFO L471 AbstractCegarLoop]: Abstraction has 4242 states and 7458 transitions. [2025-03-17 13:57:11,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 7458 transitions. [2025-03-17 13:57:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:57:11,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:11,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:11,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 13:57:11,214 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 13:57:11,214 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr173REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:11,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1907469657, now seen corresponding path program 1 times [2025-03-17 13:57:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858624588] [2025-03-17 13:57:11,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:11,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:11,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:11,218 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 13:57:11,218 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 13:57:11,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:57:11,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:57:11,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:11,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:11,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:57:11,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:11,323 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 13:57:11,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:11,323 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:11,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858624588] [2025-03-17 13:57:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858624588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:11,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143468079] [2025-03-17 13:57:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:11,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:11,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:11,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:11,324 INFO L87 Difference]: Start difference. First operand 4242 states and 7458 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:11,397 INFO L93 Difference]: Finished difference Result 4164 states and 7337 transitions. [2025-03-17 13:57:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:57:11,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:57:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:11,406 INFO L225 Difference]: With dead ends: 4164 [2025-03-17 13:57:11,407 INFO L226 Difference]: Without dead ends: 4164 [2025-03-17 13:57:11,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:11,408 INFO L435 NwaCegarLoop]: 2936 mSDtfsCounter, 45 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8785 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:11,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8785 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:57:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2025-03-17 13:57:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4164. [2025-03-17 13:57:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 2247 states have (on average 1.9265687583444593) internal successors, (4329), 4157 states have internal predecessors, (4329), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:57:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 7337 transitions. [2025-03-17 13:57:11,644 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 7337 transitions. Word has length 12 [2025-03-17 13:57:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:11,645 INFO L471 AbstractCegarLoop]: Abstraction has 4164 states and 7337 transitions. [2025-03-17 13:57:11,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13:57:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 7337 transitions. [2025-03-17 13:57:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:57:11,645 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:11,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:11,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 13:57:11,846 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 13:57:11,846 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:11,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash -687208263, now seen corresponding path program 1 times [2025-03-17 13:57:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195130260] [2025-03-17 13:57:11,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:11,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:11,848 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 13:57:11,849 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 13:57:11,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:57:11,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:57:11,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:11,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:11,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:57:11,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:11,951 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:57:11,952 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:57:11,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-03-17 13:57:11,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:57:11,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-03-17 13:57:11,997 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 13:57:11,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:11,997 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:11,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195130260] [2025-03-17 13:57:11,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195130260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:11,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:11,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:11,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334601349] [2025-03-17 13:57:11,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:11,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:11,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:11,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:11,998 INFO L87 Difference]: Start difference. First operand 4164 states and 7337 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:12,996 INFO L93 Difference]: Finished difference Result 5882 states and 10050 transitions. [2025-03-17 13:57:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:12,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:57:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:13,010 INFO L225 Difference]: With dead ends: 5882 [2025-03-17 13:57:13,010 INFO L226 Difference]: Without dead ends: 5882 [2025-03-17 13:57:13,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:13,011 INFO L435 NwaCegarLoop]: 3428 mSDtfsCounter, 1877 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 9275 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:13,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 9275 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 13:57:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-17 13:57:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 3104. [2025-03-17 13:57:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 1687 states have (on average 1.931238885595732) internal successors, (3258), 3097 states have internal predecessors, (3258), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5266 transitions. [2025-03-17 13:57:13,288 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5266 transitions. Word has length 12 [2025-03-17 13:57:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:13,288 INFO L471 AbstractCegarLoop]: Abstraction has 3104 states and 5266 transitions. [2025-03-17 13:57:13,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13:57:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5266 transitions. [2025-03-17 13:57:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:57:13,289 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:13,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:13,295 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 13:57:13,493 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 13:57:13,493 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:13,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash 482482287, now seen corresponding path program 1 times [2025-03-17 13:57:13,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:13,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114699291] [2025-03-17 13:57:13,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:13,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:13,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:13,497 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 13:57:13,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:57:13,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:57:13,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:57:13,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:13,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:13,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:57:13,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:13,614 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 13:57:13,642 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 13:57:13,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:13,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114699291] [2025-03-17 13:57:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114699291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:13,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:13,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:57:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665547943] [2025-03-17 13:57:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:13,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:13,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:13,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:13,643 INFO L87 Difference]: Start difference. First operand 3104 states and 5266 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 13:57:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:15,946 INFO L93 Difference]: Finished difference Result 3089 states and 5228 transitions. [2025-03-17 13:57:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-03-17 13:57:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:15,952 INFO L225 Difference]: With dead ends: 3089 [2025-03-17 13:57:15,952 INFO L226 Difference]: Without dead ends: 3089 [2025-03-17 13:57:15,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 13:57:15,953 INFO L435 NwaCegarLoop]: 2581 mSDtfsCounter, 1724 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:15,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 4108 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:57:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2025-03-17 13:57:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3081. [2025-03-17 13:57:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 1687 states have (on average 1.903971547125074) internal successors, (3212), 3074 states have internal predecessors, (3212), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 5220 transitions. [2025-03-17 13:57:16,080 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 5220 transitions. Word has length 16 [2025-03-17 13:57:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:16,080 INFO L471 AbstractCegarLoop]: Abstraction has 3081 states and 5220 transitions. [2025-03-17 13:57:16,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 13:57:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 5220 transitions. [2025-03-17 13:57:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:57:16,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:16,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:16,088 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 13:57:16,282 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 13:57:16,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:16,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash 482482288, now seen corresponding path program 1 times [2025-03-17 13:57:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:16,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778503153] [2025-03-17 13:57:16,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:16,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:16,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:16,285 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 13:57:16,288 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 13:57:16,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:57:16,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:57:16,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:16,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:16,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:57:16,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:16,411 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 13:57:16,468 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 13:57:16,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:16,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:16,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778503153] [2025-03-17 13:57:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778503153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:16,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:16,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:57:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842852828] [2025-03-17 13:57:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:16,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:16,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:16,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:16,470 INFO L87 Difference]: Start difference. First operand 3081 states and 5220 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 13:57:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:19,667 INFO L93 Difference]: Finished difference Result 5474 states and 9634 transitions. [2025-03-17 13:57:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:19,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-03-17 13:57:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:19,678 INFO L225 Difference]: With dead ends: 5474 [2025-03-17 13:57:19,678 INFO L226 Difference]: Without dead ends: 5474 [2025-03-17 13:57:19,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 13:57:19,679 INFO L435 NwaCegarLoop]: 4891 mSDtfsCounter, 1549 mSDsluCounter, 5887 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 10778 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:19,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 10778 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:57:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-17 13:57:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 3195. [2025-03-17 13:57:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 1801 states have (on average 1.8600777345918933) internal successors, (3350), 3188 states have internal predecessors, (3350), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5358 transitions. [2025-03-17 13:57:19,935 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5358 transitions. Word has length 16 [2025-03-17 13:57:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:19,935 INFO L471 AbstractCegarLoop]: Abstraction has 3195 states and 5358 transitions. [2025-03-17 13:57:19,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 13:57:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5358 transitions. [2025-03-17 13:57:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 13:57:19,936 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:19,936 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:19,944 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 13:57:20,136 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 13:57:20,137 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:20,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 562474765, now seen corresponding path program 1 times [2025-03-17 13:57:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838170345] [2025-03-17 13:57:20,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:20,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:20,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:20,141 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 13:57:20,143 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 13:57:20,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 13:57:20,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 13:57:20,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:20,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:20,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:57:20,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:20,300 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 13:57:20,435 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 13:57:20,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:57:20,764 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 13:57:20,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:20,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838170345] [2025-03-17 13:57:20,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838170345] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:57:20,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:57:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:57:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634839266] [2025-03-17 13:57:20,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:57:20,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:57:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:20,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:57:20,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:57:20,765 INFO L87 Difference]: Start difference. First operand 3195 states and 5358 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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 13:57:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:32,625 INFO L93 Difference]: Finished difference Result 5830 states and 10124 transitions. [2025-03-17 13:57:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:57:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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 35 [2025-03-17 13:57:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:32,633 INFO L225 Difference]: With dead ends: 5830 [2025-03-17 13:57:32,633 INFO L226 Difference]: Without dead ends: 5830 [2025-03-17 13:57:32,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 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 13:57:32,633 INFO L435 NwaCegarLoop]: 4930 mSDtfsCounter, 2069 mSDsluCounter, 18815 mSDsCounter, 0 mSdLazyCounter, 8321 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 23745 SdHoareTripleChecker+Invalid, 8348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:32,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2570 Valid, 23745 Invalid, 8348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 8321 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2025-03-17 13:57:32,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2025-03-17 13:57:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 3359. [2025-03-17 13:57:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 1965 states have (on average 1.8229007633587786) internal successors, (3582), 3352 states have internal predecessors, (3582), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 5590 transitions. [2025-03-17 13:57:32,885 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 5590 transitions. Word has length 35 [2025-03-17 13:57:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:32,885 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 5590 transitions. [2025-03-17 13:57:32,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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 13:57:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 5590 transitions. [2025-03-17 13:57:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-17 13:57:32,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:32,888 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:32,898 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 13:57:33,088 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 13:57:33,089 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:33,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1666552663, now seen corresponding path program 1 times [2025-03-17 13:57:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346861544] [2025-03-17 13:57:33,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:33,093 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 13:57:33,093 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 13:57:33,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 13:57:33,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 13:57:33,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:33,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:33,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:57:33,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:57:33,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:33,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346861544] [2025-03-17 13:57:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346861544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781367103] [2025-03-17 13:57:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:33,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:33,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:33,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:33,277 INFO L87 Difference]: Start difference. First operand 3359 states and 5590 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:33,344 INFO L93 Difference]: Finished difference Result 3048 states and 5154 transitions. [2025-03-17 13:57:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:57:33,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-17 13:57:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:33,348 INFO L225 Difference]: With dead ends: 3048 [2025-03-17 13:57:33,348 INFO L226 Difference]: Without dead ends: 3048 [2025-03-17 13:57:33,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:33,349 INFO L435 NwaCegarLoop]: 2873 mSDtfsCounter, 56 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8546 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 13:57:33,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8546 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:57:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2025-03-17 13:57:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3046. [2025-03-17 13:57:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 1675 states have (on average 1.8770149253731343) internal successors, (3144), 3039 states have internal predecessors, (3144), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 5152 transitions. [2025-03-17 13:57:33,495 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 5152 transitions. Word has length 50 [2025-03-17 13:57:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:33,496 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 5152 transitions. [2025-03-17 13:57:33,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 5152 transitions. [2025-03-17 13:57:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:57:33,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:33,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:33,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 13:57:33,698 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 13:57:33,699 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:33,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1832938767, now seen corresponding path program 1 times [2025-03-17 13:57:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575112282] [2025-03-17 13:57:33,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:33,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:33,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:33,702 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 13:57:33,703 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 13:57:33,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:57:33,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:57:33,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:33,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:33,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:57:33,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:33,895 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 13:57:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:57:34,182 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 13:57:34,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:57:34,192 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 13:57:34,197 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 13:57:34,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:34,197 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575112282] [2025-03-17 13:57:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575112282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:34,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:34,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325464827] [2025-03-17 13:57:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:34,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:57:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:34,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:57:34,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:34,199 INFO L87 Difference]: Start difference. First operand 3046 states and 5152 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 13:57:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:36,709 INFO L93 Difference]: Finished difference Result 3008 states and 5114 transitions. [2025-03-17 13:57:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:57:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2025-03-17 13:57:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:36,713 INFO L225 Difference]: With dead ends: 3008 [2025-03-17 13:57:36,713 INFO L226 Difference]: Without dead ends: 3008 [2025-03-17 13:57:36,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 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 13:57:36,714 INFO L435 NwaCegarLoop]: 2450 mSDtfsCounter, 3177 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:36,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 3742 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 13:57:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2025-03-17 13:57:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2971. [2025-03-17 13:57:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1638 states have (on average 1.8510378510378511) internal successors, (3032), 2964 states have internal predecessors, (3032), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5040 transitions. [2025-03-17 13:57:36,831 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5040 transitions. Word has length 58 [2025-03-17 13:57:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:36,832 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 5040 transitions. [2025-03-17 13:57:36,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 13:57:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5040 transitions. [2025-03-17 13:57:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:57:36,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:36,834 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] [2025-03-17 13:57:36,845 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 13:57:37,037 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 13:57:37,037 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:37,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -775370179, now seen corresponding path program 1 times [2025-03-17 13:57:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287319638] [2025-03-17 13:57:37,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:37,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:37,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:37,040 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 13:57:37,041 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 13:57:37,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:57:37,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:57:37,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:37,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:37,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:57:37,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:37,240 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 13:57:37,250 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 13:57:37,262 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 13:57:37,268 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 13:57:37,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:37,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287319638] [2025-03-17 13:57:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287319638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:37,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873776552] [2025-03-17 13:57:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:37,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:57:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:37,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:57:37,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:37,270 INFO L87 Difference]: Start difference. First operand 2971 states and 5040 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:38,484 INFO L93 Difference]: Finished difference Result 2970 states and 5039 transitions. [2025-03-17 13:57:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:57:38,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:57:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:38,489 INFO L225 Difference]: With dead ends: 2970 [2025-03-17 13:57:38,489 INFO L226 Difference]: Without dead ends: 2970 [2025-03-17 13:57:38,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 13:57:38,489 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 2 mSDsluCounter, 7362 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10207 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:38,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10207 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:57:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2025-03-17 13:57:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2970. [2025-03-17 13:57:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 1638 states have (on average 1.8504273504273505) internal successors, (3031), 2963 states have internal predecessors, (3031), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 5039 transitions. [2025-03-17 13:57:38,605 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 5039 transitions. Word has length 63 [2025-03-17 13:57:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:38,605 INFO L471 AbstractCegarLoop]: Abstraction has 2970 states and 5039 transitions. [2025-03-17 13:57:38,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 5039 transitions. [2025-03-17 13:57:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:57:38,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:38,606 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] [2025-03-17 13:57:38,615 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 13:57:38,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:38,806 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:38,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -775370178, now seen corresponding path program 1 times [2025-03-17 13:57:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127242516] [2025-03-17 13:57:38,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:38,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:38,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:38,808 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:57:38,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:57:38,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:57:38,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:57:38,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:38,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:38,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:57:38,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:38,983 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 13:57:38,998 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 13:57:39,005 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 13:57:39,030 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 13:57:39,042 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 13:57:39,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:39,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:39,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127242516] [2025-03-17 13:57:39,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127242516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:39,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:39,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794838823] [2025-03-17 13:57:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:39,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:57:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:39,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:57:39,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:57:39,043 INFO L87 Difference]: Start difference. First operand 2970 states and 5039 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:40,469 INFO L93 Difference]: Finished difference Result 2969 states and 5038 transitions. [2025-03-17 13:57:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:57:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:57:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:40,474 INFO L225 Difference]: With dead ends: 2969 [2025-03-17 13:57:40,474 INFO L226 Difference]: Without dead ends: 2969 [2025-03-17 13:57:40,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 13:57:40,475 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 1 mSDsluCounter, 7349 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10194 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:40,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10194 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:57:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2025-03-17 13:57:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2969. [2025-03-17 13:57:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 1637 states have (on average 1.8509468540012217) internal successors, (3030), 2962 states have internal predecessors, (3030), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:57:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 5038 transitions. [2025-03-17 13:57:40,600 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 5038 transitions. Word has length 63 [2025-03-17 13:57:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:40,600 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 5038 transitions. [2025-03-17 13:57:40,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:57:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 5038 transitions. [2025-03-17 13:57:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:57:40,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:40,601 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:40,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-17 13:57:40,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:40,802 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:40,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 19594010, now seen corresponding path program 1 times [2025-03-17 13:57:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412710603] [2025-03-17 13:57:40,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:40,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:40,804 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 13:57:40,805 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 13:57:40,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:57:40,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:57:40,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:40,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:40,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:57:40,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:40,979 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 13:57:41,026 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 13:57:41,035 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 13:57:41,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:41,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412710603] [2025-03-17 13:57:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412710603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:57:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726612950] [2025-03-17 13:57:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:41,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:57:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:41,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:57:41,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:57:41,036 INFO L87 Difference]: Start difference. First operand 2969 states and 5038 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 13:57:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:44,804 INFO L93 Difference]: Finished difference Result 2981 states and 5053 transitions. [2025-03-17 13:57:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:57:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2025-03-17 13:57:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:44,810 INFO L225 Difference]: With dead ends: 2981 [2025-03-17 13:57:44,810 INFO L226 Difference]: Without dead ends: 2981 [2025-03-17 13:57:44,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 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 13:57:44,810 INFO L435 NwaCegarLoop]: 2830 mSDtfsCounter, 13 mSDsluCounter, 7730 mSDsCounter, 0 mSdLazyCounter, 3677 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10560 SdHoareTripleChecker+Invalid, 4182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 3677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:44,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10560 Invalid, 4182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 3677 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-17 13:57:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2025-03-17 13:57:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2975. [2025-03-17 13:57:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 1642 states have (on average 1.8495736906211937) internal successors, (3037), 2967 states have internal predecessors, (3037), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1003 states have call successors, (1006) [2025-03-17 13:57:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 5048 transitions. [2025-03-17 13:57:44,929 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 5048 transitions. Word has length 71 [2025-03-17 13:57:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:44,929 INFO L471 AbstractCegarLoop]: Abstraction has 2975 states and 5048 transitions. [2025-03-17 13:57:44,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 13:57:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 5048 transitions. [2025-03-17 13:57:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:57:44,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:44,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:44,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:57:45,130 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 13:57:45,130 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:45,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash 19594011, now seen corresponding path program 1 times [2025-03-17 13:57:45,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:45,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165777459] [2025-03-17 13:57:45,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:45,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:45,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:45,133 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 13:57:45,133 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 13:57:45,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:57:45,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:57:45,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:45,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:45,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:57:45,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:45,362 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 13:57:45,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:57:45,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165777459] [2025-03-17 13:57:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165777459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:57:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:57:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:57:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297054566] [2025-03-17 13:57:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:57:45,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:57:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:45,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:57:45,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:57:45,364 INFO L87 Difference]: Start difference. First operand 2975 states and 5048 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 13:57:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:45,409 INFO L93 Difference]: Finished difference Result 2972 states and 5042 transitions. [2025-03-17 13:57:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:57:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2025-03-17 13:57:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:45,418 INFO L225 Difference]: With dead ends: 2972 [2025-03-17 13:57:45,418 INFO L226 Difference]: Without dead ends: 2972 [2025-03-17 13:57:45,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 13:57:45,419 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 0 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8530 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 13:57:45,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8530 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:57:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2025-03-17 13:57:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2972. [2025-03-17 13:57:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 1639 states have (on average 1.8505186089078707) internal successors, (3033), 2965 states have internal predecessors, (3033), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-17 13:57:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5042 transitions. [2025-03-17 13:57:45,574 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5042 transitions. Word has length 71 [2025-03-17 13:57:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:45,575 INFO L471 AbstractCegarLoop]: Abstraction has 2972 states and 5042 transitions. [2025-03-17 13:57:45,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 13:57:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5042 transitions. [2025-03-17 13:57:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:57:45,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:45,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:45,586 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 13:57:45,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:45,776 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:45,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash -818168709, now seen corresponding path program 1 times [2025-03-17 13:57:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141643961] [2025-03-17 13:57:45,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:57:45,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:45,778 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:57:45,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:57:45,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 13:57:45,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:57:45,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:57:45,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:57:45,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:57:45,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:57:45,970 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 13:57:45,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:57:46,011 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 13:57:46,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:57:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141643961] [2025-03-17 13:57:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141643961] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:57:46,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:57:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:57:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343384759] [2025-03-17 13:57:46,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:57:46,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:57:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:57:46,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:57:46,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:57:46,012 INFO L87 Difference]: Start difference. First operand 2972 states and 5042 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 13:57:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:57:46,122 INFO L93 Difference]: Finished difference Result 2984 states and 5059 transitions. [2025-03-17 13:57:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:57:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2025-03-17 13:57:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:57:46,132 INFO L225 Difference]: With dead ends: 2984 [2025-03-17 13:57:46,132 INFO L226 Difference]: Without dead ends: 2984 [2025-03-17 13:57:46,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 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 13:57:46,134 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 8 mSDsluCounter, 11366 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14211 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:57:46,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14211 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:57:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2025-03-17 13:57:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2982. [2025-03-17 13:57:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 1648 states have (on average 1.8495145631067962) internal successors, (3048), 2974 states have internal predecessors, (3048), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-17 13:57:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5057 transitions. [2025-03-17 13:57:46,319 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5057 transitions. Word has length 72 [2025-03-17 13:57:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:57:46,319 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 5057 transitions. [2025-03-17 13:57:46,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 13:57:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5057 transitions. [2025-03-17 13:57:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:57:46,319 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:57:46,319 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:57:46,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 13:57:46,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:46,520 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:57:46,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:57:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1610664794, now seen corresponding path program 2 times [2025-03-17 13:57:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:57:46,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357606537] [2025-03-17 13:57:46,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:57:46,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:57:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:57:46,522 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 13:57:46,523 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 13:57:46,647 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes.