./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.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_FNV_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:39:27,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:39:27,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:39:27,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:39:27,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:39:27,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:39:27,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:39:27,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:39:27,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:39:27,159 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:39:27,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:39:27,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:39:27,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:39:27,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:39:27,160 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:39:27,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:39:27,161 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:39:27,162 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:39:27,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:39:27,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:39:27,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:39:27,163 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 -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2025-03-17 13:39:27,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:39:27,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:39:27,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:39:27,396 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:39:27,396 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:39:27,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-17 13:39:28,552 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2139333/8615684ddde240fdbbb63f8175fb7407/FLAGfbd2d1ea0 [2025-03-17 13:39:28,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:39:28,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-17 13:39:28,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2139333/8615684ddde240fdbbb63f8175fb7407/FLAGfbd2d1ea0 [2025-03-17 13:39:28,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b2139333/8615684ddde240fdbbb63f8175fb7407 [2025-03-17 13:39:28,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:39:28,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:39:28,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:39:28,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:39:28,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:39:28,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:39:28" (1/1) ... [2025-03-17 13:39:28,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dca021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:28, skipping insertion in model container [2025-03-17 13:39:28,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:39:28" (1/1) ... [2025-03-17 13:39:28,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:39:29,232 WARN 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 13:39:29,262 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,267 WARN 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 13:39:29,272 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,276 WARN 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 13:39:29,302 WARN 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 13:39:29,303 WARN 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 13:39:29,305 WARN 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 13:39:29,309 WARN 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 13:39:29,327 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,327 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,329 WARN 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 13:39:29,329 WARN 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 13:39:29,337 WARN 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 13:39:29,337 WARN 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 13:39:29,338 WARN 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 13:39:29,338 WARN 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 13:39:29,346 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 13:39:29,347 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,348 WARN 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 13:39:29,348 WARN 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 13:39:29,357 WARN 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 13:39:29,358 WARN 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 13:39:29,359 WARN 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 13:39:29,359 WARN 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 13:39:29,360 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,361 WARN 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 13:39:29,362 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,362 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:29,363 WARN 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 13:39:29,368 WARN 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 13:39:29,369 WARN 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 13:39:29,369 WARN 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 13:39:29,370 WARN 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 13:39:29,371 WARN 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 13:39:29,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:39:29,398 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 13:39:29,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@de15edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:29, skipping insertion in model container [2025-03-17 13:39:29,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:39:29,400 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:39:29,401 INFO L158 Benchmark]: Toolchain (without parser) took 479.54ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 89.5MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:39:29,402 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:39:29,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.91ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 89.5MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:39:29,403 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 476.91ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 89.5MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:39:31,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:39:31,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:39:31,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:39:31,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:39:31,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:39:31,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:39:31,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:39:31,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:39:31,137 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:39:31,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:39:31,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:39:31,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:39:31,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:39:31,138 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:39:31,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:39:31,138 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:39:31,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:39:31,140 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:39:31,140 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:39:31,140 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:39:31,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:39:31,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:39:31,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:39:31,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:39:31,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:39:31,142 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 -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2025-03-17 13:39:31,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:39:31,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:39:31,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:39:31,385 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:39:31,385 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:39:31,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-17 13:39:32,577 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfa09323/88cc364aedb648e79499df4505c5687d/FLAG04e222d8e [2025-03-17 13:39:32,877 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:39:32,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-17 13:39:32,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfa09323/88cc364aedb648e79499df4505c5687d/FLAG04e222d8e [2025-03-17 13:39:32,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bfa09323/88cc364aedb648e79499df4505c5687d [2025-03-17 13:39:32,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:39:32,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:39:32,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:39:32,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:39:32,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:39:32,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:39:32" (1/1) ... [2025-03-17 13:39:32,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2997747f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:32, skipping insertion in model container [2025-03-17 13:39:32,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:39:32" (1/1) ... [2025-03-17 13:39:32,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:39:33,304 WARN 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 13:39:33,335 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 13:39:33,338 WARN 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 13:39:33,342 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 13:39:33,349 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,372 WARN 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 13:39:33,374 WARN 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 13:39:33,377 WARN 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 13:39:33,381 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,407 WARN 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 13:39:33,407 WARN 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 13:39:33,410 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,410 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,424 WARN 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 13:39:33,425 WARN 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 13:39:33,426 WARN 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 13:39:33,426 WARN 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 13:39:33,435 WARN 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 13:39:33,436 WARN 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 13:39:33,437 WARN 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 13:39:33,437 WARN 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 13:39:33,446 WARN 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 13:39:33,446 WARN 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 13:39:33,447 WARN 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 13:39:33,448 WARN 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 13:39:33,448 WARN 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 13:39:33,454 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,455 WARN 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 13:39:33,456 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,456 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,458 WARN 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 13:39:33,459 WARN 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 13:39:33,459 WARN 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 13:39:33,460 WARN 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 13:39:33,462 WARN 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 13:39:33,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:39:33,482 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:39:33,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:39:33,522 WARN 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 13:39:33,538 WARN 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 13:39:33,543 WARN 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 13:39:33,545 WARN 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 13:39:33,547 WARN 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 13:39:33,559 WARN 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 13:39:33,561 WARN 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 13:39:33,562 WARN 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 13:39:33,564 WARN 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 13:39:33,586 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,587 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,589 WARN 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 13:39:33,591 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,599 WARN 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 13:39:33,600 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 13:39:33,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,611 WARN 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 13:39:33,612 WARN 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 13:39:33,614 WARN 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 13:39:33,615 WARN 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 13:39:33,624 WARN 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 13:39:33,626 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:39:33,628 WARN 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 13:39:33,628 WARN 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 13:39:33,628 WARN 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 13:39:33,630 WARN 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 13:39:33,630 WARN 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 13:39:33,631 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 13:39:33,631 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 13:39:33,633 WARN 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 13:39:33,633 WARN 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 13:39:33,634 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 13:39:33,634 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 13:39:33,636 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 13:39:33,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:39:33,647 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:39:33,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:39:33,767 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:39:33,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33 WrapperNode [2025-03-17 13:39:33,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:39:33,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:39:33,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:39:33,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:39:33,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:33,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:33,894 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-03-17 13:39:33,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:39:33,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:39:33,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:39:33,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:39:33,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:33,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:33,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,059 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 466, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 98, 4]. [2025-03-17 13:39:34,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,106 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:39:34,143 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:39:34,144 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:39:34,144 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:39:34,146 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (1/1) ... [2025-03-17 13:39:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:39:34,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:34,172 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 13:39:34,176 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 13:39:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:39:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:39:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:39:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-17 13:39:34,195 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-17 13:39:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:39:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:39:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:39:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:39:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:39:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:39:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:39:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:39:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:39:34,469 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:39:34,470 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:39:40,125 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:39:40,292 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2025-03-17 13:39:40,292 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:39:40,320 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:39:40,321 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:39:40,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:39:40 BoogieIcfgContainer [2025-03-17 13:39:40,321 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:39:40,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:39:40,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:39:40,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:39:40,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:39:32" (1/3) ... [2025-03-17 13:39:40,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3130958e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:39:40, skipping insertion in model container [2025-03-17 13:39:40,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:39:33" (2/3) ... [2025-03-17 13:39:40,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3130958e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:39:40, skipping insertion in model container [2025-03-17 13:39:40,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:39:40" (3/3) ... [2025-03-17 13:39:40,328 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-3.i [2025-03-17 13:39:40,337 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:39:40,339 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test10-3.i that has 6 procedures, 2450 locations, 1 initial locations, 87 loop locations, and 1189 error locations. [2025-03-17 13:39:40,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:39:40,401 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;@711cd2af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:39:40,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-03-17 13:39:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 1239 states have (on average 2.2066182405165455) internal successors, (2734), 2426 states have internal predecessors, (2734), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 13:39:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:39:40,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:40,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:39:40,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:39:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:39:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash 89311, now seen corresponding path program 1 times [2025-03-17 13:39:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:39:40,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434329358] [2025-03-17 13:39:40,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:39:40,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:39:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:40,427 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 13:39:40,429 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 13:39:40,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:39:40,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:39:40,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:39:40,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:39:40,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:39:40,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:39:40,641 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 13:39:40,652 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 13:39:40,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:39:40,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:39:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434329358] [2025-03-17 13:39:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434329358] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:39:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:39:40,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:39:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947752667] [2025-03-17 13:39:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:39:40,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:39:40,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:39:40,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:39:40,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:39:40,684 INFO L87 Difference]: Start difference. First operand has 2440 states, 1239 states have (on average 2.2066182405165455) internal successors, (2734), 2426 states have internal predecessors, (2734), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) 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 13:39:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:39:43,565 INFO L93 Difference]: Finished difference Result 3271 states and 3471 transitions. [2025-03-17 13:39:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:39:43,566 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 13:39:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:39:43,590 INFO L225 Difference]: With dead ends: 3271 [2025-03-17 13:39:43,590 INFO L226 Difference]: Without dead ends: 3269 [2025-03-17 13:39:43,593 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 13:39:43,595 INFO L435 NwaCegarLoop]: 1659 mSDtfsCounter, 2305 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:39:43,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 2225 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 13:39:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2025-03-17 13:39:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2582. [2025-03-17 13:39:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 1409 states have (on average 2.0518097941802695) internal successors, (2891), 2566 states have internal predecessors, (2891), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:39:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 2923 transitions. [2025-03-17 13:39:43,732 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 2923 transitions. Word has length 2 [2025-03-17 13:39:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:39:43,734 INFO L471 AbstractCegarLoop]: Abstraction has 2582 states and 2923 transitions. [2025-03-17 13:39:43,734 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 13:39:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 2923 transitions. [2025-03-17 13:39:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:39:43,735 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:43,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:39:43,742 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 13:39:43,936 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 13:39:43,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:39:43,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:39:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash 89312, now seen corresponding path program 1 times [2025-03-17 13:39:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:39:43,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679834506] [2025-03-17 13:39:43,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:39:43,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:39:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:43,939 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 13:39:43,939 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 13:39:44,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:39:44,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:39:44,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:39:44,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:39:44,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:39:44,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:39:44,105 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 13:39:44,113 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 13:39:44,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:39:44,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:39:44,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679834506] [2025-03-17 13:39:44,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679834506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:39:44,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:39:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:39:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240588755] [2025-03-17 13:39:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:39:44,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:39:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:39:44,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:39:44,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:39:44,115 INFO L87 Difference]: Start difference. First operand 2582 states and 2923 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 13:39:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:39:47,747 INFO L93 Difference]: Finished difference Result 3375 states and 3796 transitions. [2025-03-17 13:39:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:39:47,747 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 13:39:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:39:47,755 INFO L225 Difference]: With dead ends: 3375 [2025-03-17 13:39:47,755 INFO L226 Difference]: Without dead ends: 3375 [2025-03-17 13:39:47,756 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 13:39:47,756 INFO L435 NwaCegarLoop]: 2210 mSDtfsCounter, 867 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:39:47,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3598 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-17 13:39:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2025-03-17 13:39:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3047. [2025-03-17 13:39:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 1872 states have (on average 2.0074786324786325) internal successors, (3758), 3028 states have internal predecessors, (3758), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 13:39:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 3796 transitions. [2025-03-17 13:39:47,804 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 3796 transitions. Word has length 2 [2025-03-17 13:39:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:39:47,805 INFO L471 AbstractCegarLoop]: Abstraction has 3047 states and 3796 transitions. [2025-03-17 13:39:47,805 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 13:39:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 3796 transitions. [2025-03-17 13:39:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:39:47,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:47,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:39:47,812 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 13:39:48,005 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 13:39:48,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:39:48,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:39:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash 960059899, now seen corresponding path program 1 times [2025-03-17 13:39:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:39:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436618678] [2025-03-17 13:39:48,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:39:48,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:39:48,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:48,010 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 13:39:48,010 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 13:39:48,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:39:48,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:39:48,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:39:48,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:39:48,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:39:48,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:39:48,161 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 13:39:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:39:48,221 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 13:39:48,236 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:39:48,236 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 13:39:48,250 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 13:39:48,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:39:48,251 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:39:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436618678] [2025-03-17 13:39:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436618678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:39:48,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:39:48,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:39:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820436370] [2025-03-17 13:39:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:39:48,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:39:48,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:39:48,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:39:48,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:39:48,252 INFO L87 Difference]: Start difference. First operand 3047 states and 3796 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 13:39:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:39:53,756 INFO L93 Difference]: Finished difference Result 5296 states and 6195 transitions. [2025-03-17 13:39:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:39:53,757 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 13:39:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:39:53,769 INFO L225 Difference]: With dead ends: 5296 [2025-03-17 13:39:53,769 INFO L226 Difference]: Without dead ends: 5296 [2025-03-17 13:39:53,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:39:53,770 INFO L435 NwaCegarLoop]: 1165 mSDtfsCounter, 4300 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:39:53,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 2672 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-03-17 13:39:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2025-03-17 13:39:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 3759. [2025-03-17 13:39:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2584 states have (on average 2.0340557275541795) internal successors, (5256), 3734 states have internal predecessors, (5256), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:39:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5306 transitions. [2025-03-17 13:39:53,824 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5306 transitions. Word has length 6 [2025-03-17 13:39:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:39:53,825 INFO L471 AbstractCegarLoop]: Abstraction has 3759 states and 5306 transitions. [2025-03-17 13:39:53,825 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 13:39:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5306 transitions. [2025-03-17 13:39:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:39:53,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:53,826 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:39:53,833 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 13:39:54,026 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 13:39:54,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:39:54,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:39:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash -302911522, now seen corresponding path program 1 times [2025-03-17 13:39:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:39:54,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715195988] [2025-03-17 13:39:54,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:39:54,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:39:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:54,030 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 13:39:54,030 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 13:39:54,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:39:54,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:39:54,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:39:54,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:39:54,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:39:54,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:39:54,174 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 13:39:54,183 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 13:39:54,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:39:54,184 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:39:54,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715195988] [2025-03-17 13:39:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715195988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:39:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:39:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:39:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242723172] [2025-03-17 13:39:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:39:54,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:39:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:39:54,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:39:54,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:39:54,185 INFO L87 Difference]: Start difference. First operand 3759 states and 5306 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 13:39:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:39:56,258 INFO L93 Difference]: Finished difference Result 4463 states and 5968 transitions. [2025-03-17 13:39:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:39:56,258 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 13:39:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:39:56,268 INFO L225 Difference]: With dead ends: 4463 [2025-03-17 13:39:56,268 INFO L226 Difference]: Without dead ends: 4463 [2025-03-17 13:39:56,269 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 13:39:56,270 INFO L435 NwaCegarLoop]: 2388 mSDtfsCounter, 1906 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:39:56,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3148 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:39:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2025-03-17 13:39:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3667. [2025-03-17 13:39:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2584 states have (on average 1.9508513931888545) internal successors, (5041), 3642 states have internal predecessors, (5041), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:39:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5091 transitions. [2025-03-17 13:39:56,324 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5091 transitions. Word has length 7 [2025-03-17 13:39:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:39:56,324 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 5091 transitions. [2025-03-17 13:39:56,324 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 13:39:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5091 transitions. [2025-03-17 13:39:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:39:56,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:56,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:39:56,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 13:39:56,526 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 13:39:56,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:39:56,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:39:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash -302911521, now seen corresponding path program 1 times [2025-03-17 13:39:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:39:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600515772] [2025-03-17 13:39:56,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:39:56,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:39:56,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:39:56,528 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 13:39:56,529 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 13:39:56,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:39:56,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:39:56,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:39:56,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:39:56,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:39:56,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:39:56,664 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 13:39:56,678 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 13:39:56,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:39:56,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:39:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600515772] [2025-03-17 13:39:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600515772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:39:56,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:39:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:39:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155283767] [2025-03-17 13:39:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:39:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:39:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:39:56,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:39:56,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:39:56,679 INFO L87 Difference]: Start difference. First operand 3667 states and 5091 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 13:39:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:39:59,870 INFO L93 Difference]: Finished difference Result 5452 states and 7531 transitions. [2025-03-17 13:39:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:39:59,870 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 13:39:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:39:59,881 INFO L225 Difference]: With dead ends: 5452 [2025-03-17 13:39:59,881 INFO L226 Difference]: Without dead ends: 5452 [2025-03-17 13:39:59,882 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 13:39:59,882 INFO L435 NwaCegarLoop]: 2742 mSDtfsCounter, 1411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:39:59,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3932 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:39:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5452 states. [2025-03-17 13:39:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5452 to 4007. [2025-03-17 13:39:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 2934 states have (on average 1.934901158827539) internal successors, (5677), 3982 states have internal predecessors, (5677), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:39:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5727 transitions. [2025-03-17 13:39:59,939 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5727 transitions. Word has length 7 [2025-03-17 13:39:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:39:59,941 INFO L471 AbstractCegarLoop]: Abstraction has 4007 states and 5727 transitions. [2025-03-17 13:39:59,941 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 13:39:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5727 transitions. [2025-03-17 13:39:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:39:59,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:39:59,942 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:39:59,950 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 13:40:00,142 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 13:40:00,143 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:00,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash -328359948, now seen corresponding path program 1 times [2025-03-17 13:40:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:00,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492529034] [2025-03-17 13:40:00,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:00,145 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 13:40:00,146 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 13:40:00,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:40:00,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:40:00,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:00,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:00,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:00,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:00,333 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 13:40:00,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:00,333 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492529034] [2025-03-17 13:40:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492529034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:00,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:00,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75177530] [2025-03-17 13:40:00,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:00,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:00,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:00,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:00,334 INFO L87 Difference]: Start difference. First operand 4007 states and 5727 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:03,343 INFO L93 Difference]: Finished difference Result 4642 states and 6220 transitions. [2025-03-17 13:40:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:40:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:03,353 INFO L225 Difference]: With dead ends: 4642 [2025-03-17 13:40:03,354 INFO L226 Difference]: Without dead ends: 4642 [2025-03-17 13:40:03,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:03,354 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 2268 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:03,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3539 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 13:40:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2025-03-17 13:40:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 3984. [2025-03-17 13:40:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 2934 states have (on average 1.9192229038854807) internal successors, (5631), 3959 states have internal predecessors, (5631), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5681 transitions. [2025-03-17 13:40:03,409 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5681 transitions. Word has length 9 [2025-03-17 13:40:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:03,409 INFO L471 AbstractCegarLoop]: Abstraction has 3984 states and 5681 transitions. [2025-03-17 13:40:03,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5681 transitions. [2025-03-17 13:40:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:40:03,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:03,410 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:03,418 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 13:40:03,615 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 13:40:03,615 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:03,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -328359947, now seen corresponding path program 1 times [2025-03-17 13:40:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978435903] [2025-03-17 13:40:03,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:03,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:03,618 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 13:40:03,620 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 13:40:03,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:40:03,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:40:03,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:03,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:03,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:40:03,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:03,769 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 13:40:03,821 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 13:40:03,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:03,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:03,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978435903] [2025-03-17 13:40:03,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978435903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:03,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:03,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250613351] [2025-03-17 13:40:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:03,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:03,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:03,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:03,822 INFO L87 Difference]: Start difference. First operand 3984 states and 5681 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:07,574 INFO L93 Difference]: Finished difference Result 4725 states and 6494 transitions. [2025-03-17 13:40:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:40:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:07,583 INFO L225 Difference]: With dead ends: 4725 [2025-03-17 13:40:07,583 INFO L226 Difference]: Without dead ends: 4725 [2025-03-17 13:40:07,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:07,584 INFO L435 NwaCegarLoop]: 2115 mSDtfsCounter, 848 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:07,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4658 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-17 13:40:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2025-03-17 13:40:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4031. [2025-03-17 13:40:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 2981 states have (on average 1.9090909090909092) internal successors, (5691), 4006 states have internal predecessors, (5691), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 5741 transitions. [2025-03-17 13:40:07,630 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 5741 transitions. Word has length 9 [2025-03-17 13:40:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:07,631 INFO L471 AbstractCegarLoop]: Abstraction has 4031 states and 5741 transitions. [2025-03-17 13:40:07,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 5741 transitions. [2025-03-17 13:40:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 13:40:07,631 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:07,631 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:07,638 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 13:40:07,832 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 13:40:07,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:07,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1589267061, now seen corresponding path program 1 times [2025-03-17 13:40:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103347157] [2025-03-17 13:40:07,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:07,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:07,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:07,835 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 13:40:07,837 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 13:40:07,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:40:07,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:40:07,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:07,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:07,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:07,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:08,009 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 13:40:08,009 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:08,009 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103347157] [2025-03-17 13:40:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103347157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267019588] [2025-03-17 13:40:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:08,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:08,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:08,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:08,010 INFO L87 Difference]: Start difference. First operand 4031 states and 5741 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:08,089 INFO L93 Difference]: Finished difference Result 3953 states and 5620 transitions. [2025-03-17 13:40:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-17 13:40:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:08,099 INFO L225 Difference]: With dead ends: 3953 [2025-03-17 13:40:08,099 INFO L226 Difference]: Without dead ends: 3953 [2025-03-17 13:40:08,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:08,100 INFO L435 NwaCegarLoop]: 2354 mSDtfsCounter, 45 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:08,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7039 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:40:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2025-03-17 13:40:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3947. [2025-03-17 13:40:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 2916 states have (on average 1.9080932784636488) internal successors, (5564), 3922 states have internal predecessors, (5564), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 5614 transitions. [2025-03-17 13:40:08,140 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 5614 transitions. Word has length 10 [2025-03-17 13:40:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:08,140 INFO L471 AbstractCegarLoop]: Abstraction has 3947 states and 5614 transitions. [2025-03-17 13:40:08,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 5614 transitions. [2025-03-17 13:40:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:40:08,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:08,142 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:08,149 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 13:40:08,342 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 13:40:08,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:08,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash -909293779, now seen corresponding path program 1 times [2025-03-17 13:40:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255741759] [2025-03-17 13:40:08,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:08,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:08,345 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 13:40:08,345 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 13:40:08,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:40:08,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:40:08,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:08,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:08,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:08,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:08,533 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 13:40:08,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:08,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255741759] [2025-03-17 13:40:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255741759] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:08,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147871320] [2025-03-17 13:40:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:08,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:08,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:08,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:08,534 INFO L87 Difference]: Start difference. First operand 3947 states and 5614 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:11,327 INFO L93 Difference]: Finished difference Result 4622 states and 6334 transitions. [2025-03-17 13:40:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-17 13:40:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:11,333 INFO L225 Difference]: With dead ends: 4622 [2025-03-17 13:40:11,333 INFO L226 Difference]: Without dead ends: 4622 [2025-03-17 13:40:11,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 13:40:11,334 INFO L435 NwaCegarLoop]: 2238 mSDtfsCounter, 1871 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:11,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4617 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 13:40:11,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2025-03-17 13:40:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 3924. [2025-03-17 13:40:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 2916 states have (on average 1.892318244170096) internal successors, (5518), 3899 states have internal predecessors, (5518), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5568 transitions. [2025-03-17 13:40:11,367 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5568 transitions. Word has length 18 [2025-03-17 13:40:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:11,367 INFO L471 AbstractCegarLoop]: Abstraction has 3924 states and 5568 transitions. [2025-03-17 13:40:11,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5568 transitions. [2025-03-17 13:40:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:40:11,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:11,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:11,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:40:11,568 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 13:40:11,569 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:11,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash -909293778, now seen corresponding path program 1 times [2025-03-17 13:40:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100788755] [2025-03-17 13:40:11,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:11,572 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 13:40:11,589 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 13:40:11,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:40:11,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:40:11,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:11,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:11,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:40:11,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:11,754 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 13:40:11,823 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 13:40:11,823 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:11,823 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100788755] [2025-03-17 13:40:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100788755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59888560] [2025-03-17 13:40:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:11,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:11,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:11,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:11,824 INFO L87 Difference]: Start difference. First operand 3924 states and 5568 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:15,872 INFO L93 Difference]: Finished difference Result 5405 states and 7374 transitions. [2025-03-17 13:40:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:15,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-17 13:40:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:15,879 INFO L225 Difference]: With dead ends: 5405 [2025-03-17 13:40:15,880 INFO L226 Difference]: Without dead ends: 5405 [2025-03-17 13:40:15,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 13:40:15,880 INFO L435 NwaCegarLoop]: 2586 mSDtfsCounter, 1447 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5454 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:15,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5454 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-17 13:40:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2025-03-17 13:40:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 4038. [2025-03-17 13:40:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 3030 states have (on average 1.8666666666666667) internal successors, (5656), 4013 states have internal predecessors, (5656), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 5706 transitions. [2025-03-17 13:40:15,917 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 5706 transitions. Word has length 18 [2025-03-17 13:40:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:15,917 INFO L471 AbstractCegarLoop]: Abstraction has 4038 states and 5706 transitions. [2025-03-17 13:40:15,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 5706 transitions. [2025-03-17 13:40:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:40:15,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:15,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:15,934 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 13:40:16,118 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 13:40:16,118 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:16,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash -928164370, now seen corresponding path program 1 times [2025-03-17 13:40:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166896801] [2025-03-17 13:40:16,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:16,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:16,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:16,121 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 13:40:16,123 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 13:40:16,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:40:16,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:40:16,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:16,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:16,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:40:16,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:16,290 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 13:40:16,317 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 13:40:16,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:16,318 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166896801] [2025-03-17 13:40:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166896801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340955795] [2025-03-17 13:40:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:16,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:16,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:16,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:16,318 INFO L87 Difference]: Start difference. First operand 4038 states and 5706 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:19,061 INFO L93 Difference]: Finished difference Result 4729 states and 6350 transitions. [2025-03-17 13:40:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-17 13:40:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:19,066 INFO L225 Difference]: With dead ends: 4729 [2025-03-17 13:40:19,066 INFO L226 Difference]: Without dead ends: 4729 [2025-03-17 13:40:19,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 13:40:19,067 INFO L435 NwaCegarLoop]: 2238 mSDtfsCounter, 1846 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:19,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4617 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 13:40:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2025-03-17 13:40:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4015. [2025-03-17 13:40:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 3030 states have (on average 1.8211221122112211) internal successors, (5518), 3990 states have internal predecessors, (5518), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 5568 transitions. [2025-03-17 13:40:19,098 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 5568 transitions. Word has length 18 [2025-03-17 13:40:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:19,099 INFO L471 AbstractCegarLoop]: Abstraction has 4015 states and 5568 transitions. [2025-03-17 13:40:19,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 5568 transitions. [2025-03-17 13:40:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:40:19,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:19,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:19,107 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 13:40:19,300 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 13:40:19,300 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:19,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash -928164369, now seen corresponding path program 1 times [2025-03-17 13:40:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:19,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428870530] [2025-03-17 13:40:19,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:19,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:19,302 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 13:40:19,303 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 13:40:19,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:40:19,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:40:19,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:19,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:19,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:40:19,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:19,464 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 13:40:19,515 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 13:40:19,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:19,515 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428870530] [2025-03-17 13:40:19,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428870530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556408311] [2025-03-17 13:40:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:19,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:19,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:19,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:19,516 INFO L87 Difference]: Start difference. First operand 4015 states and 5568 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:23,685 INFO L93 Difference]: Finished difference Result 5473 states and 7374 transitions. [2025-03-17 13:40:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:23,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-17 13:40:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:23,691 INFO L225 Difference]: With dead ends: 5473 [2025-03-17 13:40:23,691 INFO L226 Difference]: Without dead ends: 5473 [2025-03-17 13:40:23,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 13:40:23,691 INFO L435 NwaCegarLoop]: 2563 mSDtfsCounter, 1424 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:23,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5385 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3035 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-17 13:40:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2025-03-17 13:40:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4129. [2025-03-17 13:40:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 3144 states have (on average 1.7989821882951653) internal successors, (5656), 4104 states have internal predecessors, (5656), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 5706 transitions. [2025-03-17 13:40:23,725 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 5706 transitions. Word has length 18 [2025-03-17 13:40:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:23,725 INFO L471 AbstractCegarLoop]: Abstraction has 4129 states and 5706 transitions. [2025-03-17 13:40:23,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 13:40:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 5706 transitions. [2025-03-17 13:40:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 13:40:23,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:23,727 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:23,735 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 13:40:23,927 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 13:40:23,927 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:23,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash 314984121, now seen corresponding path program 1 times [2025-03-17 13:40:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958410154] [2025-03-17 13:40:23,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:23,931 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 13:40:23,932 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 13:40:24,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 13:40:24,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 13:40:24,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:24,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:24,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:40:24,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:24,131 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 13:40:24,273 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 13:40:24,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:40:24,563 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 13:40:24,564 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:24,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958410154] [2025-03-17 13:40:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958410154] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:40:24,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:40:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:40:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195469781] [2025-03-17 13:40:24,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:40:24,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:40:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:24,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:40:24,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:40:24,564 INFO L87 Difference]: Start difference. First operand 4129 states and 5706 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 13:40:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:35,792 INFO L93 Difference]: Finished difference Result 5881 states and 7944 transitions. [2025-03-17 13:40:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:40:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 37 [2025-03-17 13:40:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:35,798 INFO L225 Difference]: With dead ends: 5881 [2025-03-17 13:40:35,798 INFO L226 Difference]: Without dead ends: 5881 [2025-03-17 13:40:35,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 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 13:40:35,799 INFO L435 NwaCegarLoop]: 2564 mSDtfsCounter, 2085 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 5617 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 8283 SdHoareTripleChecker+Invalid, 5645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:35,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 8283 Invalid, 5645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5617 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2025-03-17 13:40:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2025-03-17 13:40:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 4293. [2025-03-17 13:40:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4293 states, 3308 states have (on average 1.7799274486094316) internal successors, (5888), 4268 states have internal predecessors, (5888), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 5938 transitions. [2025-03-17 13:40:35,850 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 5938 transitions. Word has length 37 [2025-03-17 13:40:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:35,851 INFO L471 AbstractCegarLoop]: Abstraction has 4293 states and 5938 transitions. [2025-03-17 13:40:35,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 13:40:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 5938 transitions. [2025-03-17 13:40:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 13:40:35,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:35,853 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:35,864 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 13:40:36,054 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 13:40:36,054 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:36,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1397824309, now seen corresponding path program 1 times [2025-03-17 13:40:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256287048] [2025-03-17 13:40:36,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:36,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:36,057 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 13:40:36,060 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 13:40:36,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 13:40:36,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 13:40:36,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:36,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:36,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:40:36,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:36,261 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 13:40:36,384 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 13:40:36,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:40:36,705 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 13:40:36,705 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256287048] [2025-03-17 13:40:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256287048] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:40:36,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:40:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:40:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372793232] [2025-03-17 13:40:36,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:40:36,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:40:36,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:36,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:40:36,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:40:36,707 INFO L87 Difference]: Start difference. First operand 4293 states and 5938 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 13:40:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:46,337 INFO L93 Difference]: Finished difference Result 6045 states and 8176 transitions. [2025-03-17 13:40:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:40:46,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 37 [2025-03-17 13:40:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:46,342 INFO L225 Difference]: With dead ends: 6045 [2025-03-17 13:40:46,343 INFO L226 Difference]: Without dead ends: 6045 [2025-03-17 13:40:46,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 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 13:40:46,343 INFO L435 NwaCegarLoop]: 2566 mSDtfsCounter, 3685 mSDsluCounter, 4623 mSDsCounter, 0 mSdLazyCounter, 4613 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:46,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 7189 Invalid, 4646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4613 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2025-03-17 13:40:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2025-03-17 13:40:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 4457. [2025-03-17 13:40:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 3472 states have (on average 1.762672811059908) internal successors, (6120), 4432 states have internal predecessors, (6120), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:40:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 6170 transitions. [2025-03-17 13:40:46,383 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 6170 transitions. Word has length 37 [2025-03-17 13:40:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:46,383 INFO L471 AbstractCegarLoop]: Abstraction has 4457 states and 6170 transitions. [2025-03-17 13:40:46,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 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 13:40:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 6170 transitions. [2025-03-17 13:40:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-17 13:40:46,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:46,384 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] [2025-03-17 13:40:46,393 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 13:40:46,584 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 13:40:46,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:46,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash 794556930, now seen corresponding path program 1 times [2025-03-17 13:40:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081964867] [2025-03-17 13:40:46,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:46,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:46,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:46,588 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 13:40:46,589 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 13:40:46,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 13:40:46,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 13:40:46,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:46,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:46,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:46,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:46,850 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 13:40:46,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:46,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:46,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081964867] [2025-03-17 13:40:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081964867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:46,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:46,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39298704] [2025-03-17 13:40:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:46,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:46,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:46,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:46,851 INFO L87 Difference]: Start difference. First operand 4457 states and 6170 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 13:40:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:47,049 INFO L93 Difference]: Finished difference Result 6649 states and 8889 transitions. [2025-03-17 13:40:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-17 13:40:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:47,053 INFO L225 Difference]: With dead ends: 6649 [2025-03-17 13:40:47,054 INFO L226 Difference]: Without dead ends: 6649 [2025-03-17 13:40:47,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 13:40:47,056 INFO L435 NwaCegarLoop]: 2398 mSDtfsCounter, 1612 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:47,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 4625 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:40:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2025-03-17 13:40:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 5828. [2025-03-17 13:40:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 4836 states have (on average 1.7437965260545907) internal successors, (8433), 5793 states have internal predecessors, (8433), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-17 13:40:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8503 transitions. [2025-03-17 13:40:47,107 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8503 transitions. Word has length 38 [2025-03-17 13:40:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:47,107 INFO L471 AbstractCegarLoop]: Abstraction has 5828 states and 8503 transitions. [2025-03-17 13:40:47,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 13:40:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8503 transitions. [2025-03-17 13:40:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-17 13:40:47,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:47,110 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] [2025-03-17 13:40:47,119 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 13:40:47,314 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 13:40:47,314 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:47,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2038184171, now seen corresponding path program 1 times [2025-03-17 13:40:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:47,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830567598] [2025-03-17 13:40:47,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:47,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:47,318 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 13:40:47,319 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 13:40:47,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-17 13:40:47,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-17 13:40:47,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:47,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:47,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:47,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:47,567 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 13:40:47,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:47,568 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830567598] [2025-03-17 13:40:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830567598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:47,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:47,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:47,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833721369] [2025-03-17 13:40:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:47,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:47,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:47,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:47,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:47,569 INFO L87 Difference]: Start difference. First operand 5828 states and 8503 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:47,626 INFO L93 Difference]: Finished difference Result 5810 states and 8469 transitions. [2025-03-17 13:40:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-03-17 13:40:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:47,633 INFO L225 Difference]: With dead ends: 5810 [2025-03-17 13:40:47,634 INFO L226 Difference]: Without dead ends: 5810 [2025-03-17 13:40:47,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 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 13:40:47,634 INFO L435 NwaCegarLoop]: 2310 mSDtfsCounter, 27 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6893 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:47,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6893 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:40:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2025-03-17 13:40:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5810. [2025-03-17 13:40:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 4818 states have (on average 1.7432544624325446) internal successors, (8399), 5775 states have internal predecessors, (8399), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-17 13:40:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 8469 transitions. [2025-03-17 13:40:47,686 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 8469 transitions. Word has length 49 [2025-03-17 13:40:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:47,687 INFO L471 AbstractCegarLoop]: Abstraction has 5810 states and 8469 transitions. [2025-03-17 13:40:47,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 8469 transitions. [2025-03-17 13:40:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-17 13:40:47,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:47,688 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] [2025-03-17 13:40:47,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-17 13:40:47,889 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 13:40:47,889 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:47,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1509554863, now seen corresponding path program 1 times [2025-03-17 13:40:47,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:47,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854913497] [2025-03-17 13:40:47,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:47,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:47,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:47,891 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 13:40:47,892 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 13:40:48,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-17 13:40:48,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-17 13:40:48,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:48,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:48,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:48,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:48,225 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 13:40:48,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:48,226 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854913497] [2025-03-17 13:40:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854913497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:48,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:48,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826074821] [2025-03-17 13:40:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:48,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:48,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:48,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:48,226 INFO L87 Difference]: Start difference. First operand 5810 states and 8469 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 13:40:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:48,347 INFO L93 Difference]: Finished difference Result 8192 states and 11521 transitions. [2025-03-17 13:40:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:48,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2025-03-17 13:40:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:48,356 INFO L225 Difference]: With dead ends: 8192 [2025-03-17 13:40:48,357 INFO L226 Difference]: Without dead ends: 8192 [2025-03-17 13:40:48,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 13:40:48,357 INFO L435 NwaCegarLoop]: 2323 mSDtfsCounter, 1503 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4585 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:48,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4585 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:40:48,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2025-03-17 13:40:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 7378. [2025-03-17 13:40:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 6377 states have (on average 1.7254194762427473) internal successors, (11003), 7331 states have internal predecessors, (11003), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 13:40:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 11097 transitions. [2025-03-17 13:40:48,444 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 11097 transitions. Word has length 49 [2025-03-17 13:40:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:48,444 INFO L471 AbstractCegarLoop]: Abstraction has 7378 states and 11097 transitions. [2025-03-17 13:40:48,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 13:40:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 11097 transitions. [2025-03-17 13:40:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-17 13:40:48,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:48,446 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] [2025-03-17 13:40:48,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 13:40:48,646 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 13:40:48,647 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:48,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2081606699, now seen corresponding path program 1 times [2025-03-17 13:40:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449550101] [2025-03-17 13:40:48,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:48,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:48,649 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 13:40:48,651 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 13:40:48,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-17 13:40:48,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-17 13:40:48,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:48,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:48,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:48,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:48,925 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 13:40:48,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:48,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449550101] [2025-03-17 13:40:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449550101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:48,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:48,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403264766] [2025-03-17 13:40:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:48,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:48,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:48,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:48,926 INFO L87 Difference]: Start difference. First operand 7378 states and 11097 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 13:40:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:49,003 INFO L93 Difference]: Finished difference Result 6779 states and 10225 transitions. [2025-03-17 13:40:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:49,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2025-03-17 13:40:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:49,011 INFO L225 Difference]: With dead ends: 6779 [2025-03-17 13:40:49,011 INFO L226 Difference]: Without dead ends: 6779 [2025-03-17 13:40:49,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 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 13:40:49,012 INFO L435 NwaCegarLoop]: 2264 mSDtfsCounter, 56 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6719 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 13:40:49,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6719 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:40:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2025-03-17 13:40:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6775. [2025-03-17 13:40:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 5797 states have (on average 1.7469380714162497) internal successors, (10127), 6728 states have internal predecessors, (10127), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 13:40:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 10221 transitions. [2025-03-17 13:40:49,084 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 10221 transitions. Word has length 52 [2025-03-17 13:40:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:49,084 INFO L471 AbstractCegarLoop]: Abstraction has 6775 states and 10221 transitions. [2025-03-17 13:40:49,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 13:40:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 10221 transitions. [2025-03-17 13:40:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-17 13:40:49,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:49,085 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] [2025-03-17 13:40:49,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-17 13:40:49,285 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 13:40:49,286 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:49,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1453177846, now seen corresponding path program 1 times [2025-03-17 13:40:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:49,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723208766] [2025-03-17 13:40:49,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:49,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:49,289 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 13:40:49,290 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 13:40:49,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-17 13:40:49,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-17 13:40:49,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:49,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:49,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:49,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:49,526 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 13:40:49,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:49,527 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723208766] [2025-03-17 13:40:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723208766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710981335] [2025-03-17 13:40:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:49,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:49,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:49,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:49,528 INFO L87 Difference]: Start difference. First operand 6775 states and 10221 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 13:40:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:49,586 INFO L93 Difference]: Finished difference Result 6157 states and 9217 transitions. [2025-03-17 13:40:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2025-03-17 13:40:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:49,591 INFO L225 Difference]: With dead ends: 6157 [2025-03-17 13:40:49,591 INFO L226 Difference]: Without dead ends: 6157 [2025-03-17 13:40:49,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 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 13:40:49,591 INFO L435 NwaCegarLoop]: 2229 mSDtfsCounter, 76 mSDsluCounter, 4365 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6594 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 13:40:49,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6594 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:40:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2025-03-17 13:40:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6147. [2025-03-17 13:40:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 5181 states have (on average 1.7589268480988227) internal successors, (9113), 6100 states have internal predecessors, (9113), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 13:40:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 9207 transitions. [2025-03-17 13:40:49,642 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 9207 transitions. Word has length 52 [2025-03-17 13:40:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:49,642 INFO L471 AbstractCegarLoop]: Abstraction has 6147 states and 9207 transitions. [2025-03-17 13:40:49,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 13:40:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 9207 transitions. [2025-03-17 13:40:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-17 13:40:49,642 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:49,642 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] [2025-03-17 13:40:49,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-17 13:40:49,842 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 13:40:49,843 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:49,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -30892467, now seen corresponding path program 1 times [2025-03-17 13:40:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:49,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776985454] [2025-03-17 13:40:49,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:49,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:49,845 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 13:40:49,846 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 13:40:49,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-17 13:40:50,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-17 13:40:50,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:50,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:50,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:40:50,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:50,045 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:40:50,046 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:40:50,048 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 13:40:50,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:40:50,073 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 13:40:50,098 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 13:40:50,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:50,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776985454] [2025-03-17 13:40:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776985454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:50,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965232440] [2025-03-17 13:40:50,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:50,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:50,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:50,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:50,099 INFO L87 Difference]: Start difference. First operand 6147 states and 9207 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:50,866 INFO L93 Difference]: Finished difference Result 6995 states and 10211 transitions. [2025-03-17 13:40:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:50,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-17 13:40:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:50,874 INFO L225 Difference]: With dead ends: 6995 [2025-03-17 13:40:50,874 INFO L226 Difference]: Without dead ends: 6995 [2025-03-17 13:40:50,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 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 13:40:50,875 INFO L435 NwaCegarLoop]: 2134 mSDtfsCounter, 1687 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:50,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 5691 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 13:40:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6995 states. [2025-03-17 13:40:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6995 to 6028. [2025-03-17 13:40:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 5063 states have (on average 1.7649614852854039) internal successors, (8936), 5982 states have internal predecessors, (8936), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 13:40:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 9028 transitions. [2025-03-17 13:40:50,938 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 9028 transitions. Word has length 57 [2025-03-17 13:40:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:50,938 INFO L471 AbstractCegarLoop]: Abstraction has 6028 states and 9028 transitions. [2025-03-17 13:40:50,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 9028 transitions. [2025-03-17 13:40:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-17 13:40:50,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:50,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:50,948 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 13:40:51,139 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 13:40:51,139 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:51,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 712901773, now seen corresponding path program 1 times [2025-03-17 13:40:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210433813] [2025-03-17 13:40:51,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:51,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:51,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:51,142 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 13:40:51,143 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 13:40:51,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-17 13:40:51,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-17 13:40:51,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:51,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:51,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:40:51,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:51,414 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 13:40:51,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:40:51,761 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 13:40:51,770 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:40:51,771 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 13:40:51,775 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 13:40:51,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:51,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:51,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210433813] [2025-03-17 13:40:51,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210433813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:51,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:51,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:51,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978657875] [2025-03-17 13:40:51,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:51,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:40:51,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:51,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:40:51,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:51,776 INFO L87 Difference]: Start difference. First operand 6028 states and 9028 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:55,673 INFO L93 Difference]: Finished difference Result 5944 states and 8747 transitions. [2025-03-17 13:40:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:55,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-17 13:40:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:55,677 INFO L225 Difference]: With dead ends: 5944 [2025-03-17 13:40:55,677 INFO L226 Difference]: Without dead ends: 5944 [2025-03-17 13:40:55,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 13:40:55,678 INFO L435 NwaCegarLoop]: 1063 mSDtfsCounter, 1704 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 3036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:55,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 2222 Invalid, 3036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-17 13:40:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2025-03-17 13:40:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5767. [2025-03-17 13:40:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4886 states have (on average 1.703847728203029) internal successors, (8325), 5721 states have internal predecessors, (8325), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 13:40:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8417 transitions. [2025-03-17 13:40:55,714 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8417 transitions. Word has length 60 [2025-03-17 13:40:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:55,714 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 8417 transitions. [2025-03-17 13:40:55,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8417 transitions. [2025-03-17 13:40:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 13:40:55,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:55,714 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:55,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 13:40:55,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:55,915 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:55,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash 69022057, now seen corresponding path program 1 times [2025-03-17 13:40:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:55,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929527787] [2025-03-17 13:40:55,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:55,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:55,918 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 13:40:56,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 13:40:56,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 13:40:56,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:56,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:56,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:40:56,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:56,152 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 13:40:56,163 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 13:40:56,179 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 13:40:56,185 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 13:40:56,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:56,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929527787] [2025-03-17 13:40:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929527787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:56,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809526573] [2025-03-17 13:40:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:56,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:40:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:56,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:40:56,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:56,186 INFO L87 Difference]: Start difference. First operand 5767 states and 8417 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 13:40:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:59,012 INFO L93 Difference]: Finished difference Result 5766 states and 8414 transitions. [2025-03-17 13:40:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:40:59,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2025-03-17 13:40:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:59,020 INFO L225 Difference]: With dead ends: 5766 [2025-03-17 13:40:59,021 INFO L226 Difference]: Without dead ends: 5766 [2025-03-17 13:40:59,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 13:40:59,022 INFO L435 NwaCegarLoop]: 2155 mSDtfsCounter, 2 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:59,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5747 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-17 13:40:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2025-03-17 13:40:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5766. [2025-03-17 13:40:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 4886 states have (on average 1.7032337290216946) internal successors, (8322), 5720 states have internal predecessors, (8322), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 13:40:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8414 transitions. [2025-03-17 13:40:59,065 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8414 transitions. Word has length 65 [2025-03-17 13:40:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:59,065 INFO L471 AbstractCegarLoop]: Abstraction has 5766 states and 8414 transitions. [2025-03-17 13:40:59,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 13:40:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8414 transitions. [2025-03-17 13:40:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 13:40:59,065 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:59,066 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:59,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-17 13:40:59,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:59,266 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-17 13:40:59,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 69022058, now seen corresponding path program 1 times [2025-03-17 13:40:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274958794] [2025-03-17 13:40:59,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:59,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:59,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:59,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 13:40:59,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 13:40:59,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 13:40:59,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:59,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:59,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:40:59,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:59,520 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 13:40:59,535 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 13:40:59,538 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 13:40:59,570 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 13:40:59,580 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 13:40:59,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:59,580 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274958794] [2025-03-17 13:40:59,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274958794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:59,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:59,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:59,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913949453] [2025-03-17 13:40:59,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:59,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:40:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:59,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:40:59,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:59,581 INFO L87 Difference]: Start difference. First operand 5766 states and 8414 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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)