./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:44:32,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:44:32,324 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:44:32,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:44:32,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:44:32,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:44:32,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:44:32,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:44:32,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:44:32,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:44:32,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:44:32,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:44:32,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:44:32,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:32,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:44:32,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:44:32,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:44:32,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:44:32,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:44:32,353 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 -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2025-03-17 13:44:32,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:44:32,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:44:32,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:44:32,591 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:44:32,591 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:44:32,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2025-03-17 13:44:33,662 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1b76971/7d2fb4326a9041cbb72734e972edb872/FLAGb2cba0320 [2025-03-17 13:44:34,003 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:44:34,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2025-03-17 13:44:34,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1b76971/7d2fb4326a9041cbb72734e972edb872/FLAGb2cba0320 [2025-03-17 13:44:34,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1b76971/7d2fb4326a9041cbb72734e972edb872 [2025-03-17 13:44:34,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:44:34,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:44:34,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:34,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:44:34,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:44:34,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:34" (1/1) ... [2025-03-17 13:44:34,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4847eabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:34, skipping insertion in model container [2025-03-17 13:44:34,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:34" (1/1) ... [2025-03-17 13:44:34,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:34,416 WARN 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 13:44:34,447 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 13:44:34,449 WARN 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 13:44:34,451 WARN 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 13:44:34,454 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 13:44:34,483 WARN 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 13:44:34,483 WARN 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 13:44:34,484 WARN 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 13:44:34,485 WARN 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 13:44:34,486 WARN 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 13:44:34,487 WARN 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 13:44:34,488 WARN 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 13:44:34,488 WARN 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 13:44:34,491 WARN 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 13:44:34,492 WARN 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 13:44:34,493 WARN 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 13:44:34,494 WARN 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 13:44:34,496 WARN 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 13:44:34,496 WARN 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 13:44:34,499 WARN 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 13:44:34,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:34,520 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 13:44:34,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2feb7eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:34, skipping insertion in model container [2025-03-17 13:44:34,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:34,521 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:44:34,522 INFO L158 Benchmark]: Toolchain (without parser) took 479.85ms. Allocated memory is still 167.8MB. Free memory was 127.6MB in the beginning and 105.4MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:44:34,522 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:44:34,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.52ms. Allocated memory is still 167.8MB. Free memory was 127.6MB in the beginning and 105.4MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:44:34,523 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.52ms. Allocated memory is still 167.8MB. Free memory was 127.6MB in the beginning and 105.4MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:44:36,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:44:36,319 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:44:36,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:44:36,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:44:36,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:44:36,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:44:36,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:44:36,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:44:36,348 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:44:36,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:44:36,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:44:36,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:44:36,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:44:36,348 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:44:36,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:44:36,348 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:44:36,349 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:44:36,350 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:36,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:44:36,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:44:36,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:44:36,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:44:36,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:44:36,351 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 -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2025-03-17 13:44:36,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:44:36,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:44:36,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:44:36,611 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:44:36,611 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:44:36,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2025-03-17 13:44:37,728 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a9973f0/71bd675e69a24597ab1895cd0d53bbd8/FLAG550c497bf [2025-03-17 13:44:37,743 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-03-17 13:44:37,986 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:44:37,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2025-03-17 13:44:38,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a9973f0/71bd675e69a24597ab1895cd0d53bbd8/FLAG550c497bf [2025-03-17 13:44:38,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a9973f0/71bd675e69a24597ab1895cd0d53bbd8 [2025-03-17 13:44:38,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:44:38,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:44:38,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:38,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:44:38,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:44:38,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486dec38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38, skipping insertion in model container [2025-03-17 13:44:38,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:38,427 WARN 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 13:44:38,463 WARN 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 13:44:38,468 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,471 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,476 WARN 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 13:44:38,506 WARN 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 13:44:38,506 WARN 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 13:44:38,509 WARN 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 13:44:38,509 WARN 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 13:44:38,511 WARN 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 13:44:38,511 WARN 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 13:44:38,512 WARN 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 13:44:38,513 WARN 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 13:44:38,516 WARN 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 13:44:38,517 WARN 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 13:44:38,518 WARN 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 13:44:38,519 WARN 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 13:44:38,520 WARN 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 13:44:38,520 WARN 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 13:44:38,523 WARN 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 13:44:38,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:38,539 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:44:38,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:38,593 WARN 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 13:44:38,610 WARN 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 13:44:38,614 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 13:44:38,618 WARN 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 13:44:38,628 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 13:44:38,647 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,648 WARN 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 13:44:38,649 WARN 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 13:44:38,649 WARN 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 13:44:38,651 WARN 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 13:44:38,652 WARN 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 13:44:38,652 WARN 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 13:44:38,653 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,655 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,655 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,657 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,657 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:38,658 WARN 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 13:44:38,658 WARN 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 13:44:38,660 WARN 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 13:44:38,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:38,666 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:44:38,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:38,795 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:44:38,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38 WrapperNode [2025-03-17 13:44:38,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:38,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:44:38,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:44:38,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:44:38,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,872 INFO L138 Inliner]: procedures = 286, calls = 353, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1191 [2025-03-17 13:44:38,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:44:38,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:44:38,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:44:38,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:44:38,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,997 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [2, 12, 34, 270]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 62 writes are split as follows [0, 1, 4, 57]. [2025-03-17 13:44:38,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:38,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:44:39,075 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:44:39,075 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:44:39,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:44:39,077 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (1/1) ... [2025-03-17 13:44:39,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:39,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:39,106 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 13:44:39,109 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 13:44:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:44:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:44:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:44:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:44:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:44:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2025-03-17 13:44:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:44:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:44:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:44:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-17 13:44:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:44:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-03-17 13:44:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-17 13:44:39,134 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:44:39,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-17 13:44:39,134 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:44:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:44:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 13:44:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-17 13:44:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-17 13:44:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:44:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:44:39,357 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:44:39,359 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:44:39,440 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-17 13:44:42,533 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-17 13:44:42,533 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-17 13:44:42,533 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: 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 13:44:42,630 INFO L? ?]: Removed 1303 outVars from TransFormulas that were not future-live. [2025-03-17 13:44:42,631 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:44:42,660 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:44:42,660 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:44:42,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:44:42 BoogieIcfgContainer [2025-03-17 13:44:42,660 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:44:42,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:44:42,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:44:42,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:44:42,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:44:38" (1/3) ... [2025-03-17 13:44:42,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:44:42, skipping insertion in model container [2025-03-17 13:44:42,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:38" (2/3) ... [2025-03-17 13:44:42,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a8a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:44:42, skipping insertion in model container [2025-03-17 13:44:42,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:44:42" (3/3) ... [2025-03-17 13:44:42,669 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2025-03-17 13:44:42,678 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:44:42,679 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test6-2.i that has 6 procedures, 1274 locations, 1 initial locations, 39 loop locations, and 625 error locations. [2025-03-17 13:44:42,718 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:44:42,726 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;@5fb98caf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:44:42,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 625 error locations. [2025-03-17 13:44:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 624 states have (on average 2.2243589743589745) internal successors, (1388), 1252 states have internal predecessors, (1388), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 13:44:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:44:42,739 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:42,739 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:44:42,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr613REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:42,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash 46079, now seen corresponding path program 1 times [2025-03-17 13:44:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840315284] [2025-03-17 13:44:42,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:42,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:42,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:42,757 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 13:44:42,758 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 13:44:42,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:44:42,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:44:42,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:42,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:42,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:42,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:42,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:44:42,975 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 13:44:42,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:42,975 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840315284] [2025-03-17 13:44:42,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840315284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:42,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:42,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:44:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562013815] [2025-03-17 13:44:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:42,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:42,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:42,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:43,001 INFO L87 Difference]: Start difference. First operand has 1274 states, 624 states have (on average 2.2243589743589745) internal successors, (1388), 1252 states have internal predecessors, (1388), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) 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 13:44:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:44,536 INFO L93 Difference]: Finished difference Result 1533 states and 1626 transitions. [2025-03-17 13:44:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:44,538 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 13:44:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:44,550 INFO L225 Difference]: With dead ends: 1533 [2025-03-17 13:44:44,550 INFO L226 Difference]: Without dead ends: 1531 [2025-03-17 13:44:44,551 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 13:44:44,553 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 909 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:44,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1243 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:44:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2025-03-17 13:44:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1295. [2025-03-17 13:44:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 660 states have (on average 2.0954545454545452) internal successors, (1383), 1275 states have internal predecessors, (1383), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1417 transitions. [2025-03-17 13:44:44,619 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1417 transitions. Word has length 2 [2025-03-17 13:44:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:44,620 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 1417 transitions. [2025-03-17 13:44:44,620 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 13:44:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1417 transitions. [2025-03-17 13:44:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:44:44,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:44,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:44:44,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 13:44:44,825 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 13:44:44,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:44,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash 46080, now seen corresponding path program 1 times [2025-03-17 13:44:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099807881] [2025-03-17 13:44:44,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:44,828 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 13:44:44,828 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 13:44:44,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:44:44,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:44:44,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:44,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:44,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:44:44,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:44,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:44,978 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 13:44:44,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:44,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:44,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099807881] [2025-03-17 13:44:44,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099807881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:44,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:44,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:44:44,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860690753] [2025-03-17 13:44:44,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:44,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:44,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:44,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:44,980 INFO L87 Difference]: Start difference. First operand 1295 states and 1417 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 13:44:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:47,202 INFO L93 Difference]: Finished difference Result 1893 states and 2065 transitions. [2025-03-17 13:44:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:47,203 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 13:44:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:47,207 INFO L225 Difference]: With dead ends: 1893 [2025-03-17 13:44:47,207 INFO L226 Difference]: Without dead ends: 1893 [2025-03-17 13:44:47,208 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 13:44:47,208 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 631 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:47,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1741 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 13:44:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2025-03-17 13:44:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1505. [2025-03-17 13:44:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 869 states have (on average 2.0771001150747987) internal successors, (1805), 1483 states have internal predecessors, (1805), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 13:44:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1843 transitions. [2025-03-17 13:44:47,231 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1843 transitions. Word has length 2 [2025-03-17 13:44:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:47,232 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 1843 transitions. [2025-03-17 13:44:47,232 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 13:44:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1843 transitions. [2025-03-17 13:44:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:44:47,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:47,232 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:47,239 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 13:44:47,432 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 13:44:47,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr610REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:47,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1957913045, now seen corresponding path program 1 times [2025-03-17 13:44:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142456699] [2025-03-17 13:44:47,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:47,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:47,437 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 13:44:47,438 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 13:44:47,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:44:47,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:44:47,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:47,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:47,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:44:47,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:47,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:44:47,641 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 13:44:47,655 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:44:47,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:44:47,682 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 13:44:47,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:47,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:47,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142456699] [2025-03-17 13:44:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142456699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:47,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:47,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679059099] [2025-03-17 13:44:47,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:47,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:47,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:47,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:47,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:47,683 INFO L87 Difference]: Start difference. First operand 1505 states and 1843 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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 13:44:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:50,614 INFO L93 Difference]: Finished difference Result 2582 states and 3001 transitions. [2025-03-17 13:44:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:44:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 13:44:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:50,623 INFO L225 Difference]: With dead ends: 2582 [2025-03-17 13:44:50,623 INFO L226 Difference]: Without dead ends: 2582 [2025-03-17 13:44:50,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:50,627 INFO L435 NwaCegarLoop]: 695 mSDtfsCounter, 2027 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:50,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1452 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 13:44:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2025-03-17 13:44:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1652. [2025-03-17 13:44:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1016 states have (on average 2.0570866141732282) internal successors, (2090), 1630 states have internal predecessors, (2090), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 13:44:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2128 transitions. [2025-03-17 13:44:50,663 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2128 transitions. Word has length 7 [2025-03-17 13:44:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:50,664 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2128 transitions. [2025-03-17 13:44:50,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 13:44:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2128 transitions. [2025-03-17 13:44:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 13:44:50,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:50,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:50,672 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 13:44:50,869 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 13:44:50,869 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr607REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:50,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash 565763578, now seen corresponding path program 1 times [2025-03-17 13:44:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234401841] [2025-03-17 13:44:50,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:50,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:50,872 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 13:44:50,873 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 13:44:50,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 13:44:50,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 13:44:50,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:50,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:50,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:44:50,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:50,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:44:51,027 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 13:44:51,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:51,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234401841] [2025-03-17 13:44:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234401841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:51,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:44:51,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239192431] [2025-03-17 13:44:51,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:51,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:51,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:51,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:51,028 INFO L87 Difference]: Start difference. First operand 1652 states and 2128 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:52,933 INFO L93 Difference]: Finished difference Result 2195 states and 2899 transitions. [2025-03-17 13:44:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:44:52,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 13:44:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:52,940 INFO L225 Difference]: With dead ends: 2195 [2025-03-17 13:44:52,940 INFO L226 Difference]: Without dead ends: 2195 [2025-03-17 13:44:52,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 13:44:52,941 INFO L435 NwaCegarLoop]: 1215 mSDtfsCounter, 919 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:52,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2491 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 13:44:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2025-03-17 13:44:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1607. [2025-03-17 13:44:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1016 states have (on average 1.999015748031496) internal successors, (2031), 1585 states have internal predecessors, (2031), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 13:44:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2069 transitions. [2025-03-17 13:44:52,991 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2069 transitions. Word has length 8 [2025-03-17 13:44:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:52,991 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 2069 transitions. [2025-03-17 13:44:52,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2069 transitions. [2025-03-17 13:44:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 13:44:52,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:52,991 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:53,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:44:53,192 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 13:44:53,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr608REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:53,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 565763579, now seen corresponding path program 1 times [2025-03-17 13:44:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322066038] [2025-03-17 13:44:53,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:53,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:53,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:53,197 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 13:44:53,198 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 13:44:53,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 13:44:53,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 13:44:53,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:53,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:53,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:44:53,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:53,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:53,383 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 13:44:53,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:53,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322066038] [2025-03-17 13:44:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322066038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:53,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:53,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:44:53,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286082171] [2025-03-17 13:44:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:53,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:53,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:53,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:53,385 INFO L87 Difference]: Start difference. First operand 1607 states and 2069 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:55,814 INFO L93 Difference]: Finished difference Result 2257 states and 2919 transitions. [2025-03-17 13:44:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:44:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 13:44:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:55,819 INFO L225 Difference]: With dead ends: 2257 [2025-03-17 13:44:55,819 INFO L226 Difference]: Without dead ends: 2257 [2025-03-17 13:44:55,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 13:44:55,820 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 699 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:55,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 2842 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-17 13:44:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2025-03-17 13:44:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1599. [2025-03-17 13:44:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1018 states have (on average 1.9734774066797642) internal successors, (2009), 1577 states have internal predecessors, (2009), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 13:44:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2047 transitions. [2025-03-17 13:44:55,843 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2047 transitions. Word has length 8 [2025-03-17 13:44:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:55,843 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 2047 transitions. [2025-03-17 13:44:55,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2047 transitions. [2025-03-17 13:44:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:44:55,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:55,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:55,851 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 13:44:56,044 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 13:44:56,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr291REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:56,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1511870345, now seen corresponding path program 1 times [2025-03-17 13:44:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:56,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531295176] [2025-03-17 13:44:56,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:56,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:56,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:56,047 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 13:44:56,048 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 13:44:56,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:44:56,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:44:56,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:56,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:56,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:56,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:56,204 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 13:44:56,204 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:56,204 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531295176] [2025-03-17 13:44:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531295176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:56,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:44:56,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080039919] [2025-03-17 13:44:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:56,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:56,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:56,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:56,206 INFO L87 Difference]: Start difference. First operand 1599 states and 2047 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:57,686 INFO L93 Difference]: Finished difference Result 1816 states and 2221 transitions. [2025-03-17 13:44:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:44:57,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:44:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:57,690 INFO L225 Difference]: With dead ends: 1816 [2025-03-17 13:44:57,690 INFO L226 Difference]: Without dead ends: 1816 [2025-03-17 13:44:57,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:44:57,691 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 928 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:57,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1789 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:44:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2025-03-17 13:44:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1576. [2025-03-17 13:44:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1018 states have (on average 1.9282907662082516) internal successors, (1963), 1554 states have internal predecessors, (1963), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 13:44:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2001 transitions. [2025-03-17 13:44:57,712 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2001 transitions. Word has length 11 [2025-03-17 13:44:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:57,712 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 2001 transitions. [2025-03-17 13:44:57,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2001 transitions. [2025-03-17 13:44:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:44:57,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:57,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:57,720 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 13:44:57,918 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 13:44:57,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr292REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:44:57,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1511870344, now seen corresponding path program 1 times [2025-03-17 13:44:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694598974] [2025-03-17 13:44:57,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:57,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:57,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:57,920 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 13:44:57,921 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 13:44:58,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:44:58,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:44:58,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:58,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:58,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:44:58,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:58,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:58,104 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 13:44:58,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:58,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:58,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694598974] [2025-03-17 13:44:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694598974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189889441] [2025-03-17 13:44:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:58,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:58,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:58,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:58,106 INFO L87 Difference]: Start difference. First operand 1576 states and 2001 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:00,286 INFO L93 Difference]: Finished difference Result 2122 states and 2589 transitions. [2025-03-17 13:45:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:45:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:00,291 INFO L225 Difference]: With dead ends: 2122 [2025-03-17 13:45:00,291 INFO L226 Difference]: Without dead ends: 2122 [2025-03-17 13:45:00,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:00,292 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 610 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:00,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 2252 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:45:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2025-03-17 13:45:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1768. [2025-03-17 13:45:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1208 states have (on average 1.9213576158940397) internal successors, (2321), 1744 states have internal predecessors, (2321), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 13:45:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2363 transitions. [2025-03-17 13:45:00,314 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2363 transitions. Word has length 11 [2025-03-17 13:45:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:00,314 INFO L471 AbstractCegarLoop]: Abstraction has 1768 states and 2363 transitions. [2025-03-17 13:45:00,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2363 transitions. [2025-03-17 13:45:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:45:00,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:00,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:00,322 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 13:45:00,515 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 13:45:00,515 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -24915430, now seen corresponding path program 1 times [2025-03-17 13:45:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462452404] [2025-03-17 13:45:00,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:00,518 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 13:45:00,519 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 13:45:00,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:45:00,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:45:00,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:00,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:00,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:45:00,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:00,674 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 13:45:00,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:00,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462452404] [2025-03-17 13:45:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462452404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929457390] [2025-03-17 13:45:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:00,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:00,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:00,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:00,675 INFO L87 Difference]: Start difference. First operand 1768 states and 2363 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:01,166 INFO L93 Difference]: Finished difference Result 2133 states and 2634 transitions. [2025-03-17 13:45:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:45:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:01,171 INFO L225 Difference]: With dead ends: 2133 [2025-03-17 13:45:01,171 INFO L226 Difference]: Without dead ends: 2133 [2025-03-17 13:45:01,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:01,171 INFO L435 NwaCegarLoop]: 1461 mSDtfsCounter, 610 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 3933 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:01,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 3933 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:45:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2025-03-17 13:45:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1782. [2025-03-17 13:45:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1221 states have (on average 1.9090909090909092) internal successors, (2331), 1757 states have internal predecessors, (2331), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 13:45:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2375 transitions. [2025-03-17 13:45:01,192 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2375 transitions. Word has length 12 [2025-03-17 13:45:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:01,192 INFO L471 AbstractCegarLoop]: Abstraction has 1782 states and 2375 transitions. [2025-03-17 13:45:01,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2375 transitions. [2025-03-17 13:45:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:45:01,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:01,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:01,200 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 13:45:01,393 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 13:45:01,394 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr268REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:01,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 376615591, now seen corresponding path program 1 times [2025-03-17 13:45:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824351904] [2025-03-17 13:45:01,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:01,397 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 13:45:01,399 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 13:45:01,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:45:01,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:45:01,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:01,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:01,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:01,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:01,529 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 13:45:01,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:01,529 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824351904] [2025-03-17 13:45:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824351904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:01,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184446328] [2025-03-17 13:45:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:01,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:01,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:01,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:01,530 INFO L87 Difference]: Start difference. First operand 1782 states and 2375 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:01,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:01,578 INFO L93 Difference]: Finished difference Result 1710 states and 2252 transitions. [2025-03-17 13:45:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:45:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:01,583 INFO L225 Difference]: With dead ends: 1710 [2025-03-17 13:45:01,583 INFO L226 Difference]: Without dead ends: 1710 [2025-03-17 13:45:01,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:01,584 INFO L435 NwaCegarLoop]: 1171 mSDtfsCounter, 45 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:01,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3490 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2025-03-17 13:45:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2025-03-17 13:45:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1168 states have (on average 1.8904109589041096) internal successors, (2208), 1685 states have internal predecessors, (2208), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 13:45:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2252 transitions. [2025-03-17 13:45:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2252 transitions. Word has length 12 [2025-03-17 13:45:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:01,609 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2252 transitions. [2025-03-17 13:45:01,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2252 transitions. [2025-03-17 13:45:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-17 13:45:01,610 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:01,610 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:01,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:01,810 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 13:45:01,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:01,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1343479946, now seen corresponding path program 1 times [2025-03-17 13:45:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489534129] [2025-03-17 13:45:01,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:01,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:01,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:01,814 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 13:45:01,815 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 13:45:01,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 13:45:01,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 13:45:01,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:01,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:01,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:45:01,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:01,936 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:45:01,936 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:45:01,937 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:45:01,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-17 13:45:01,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:45:01,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-17 13:45:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:01,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:01,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489534129] [2025-03-17 13:45:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489534129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25391926] [2025-03-17 13:45:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:01,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:01,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:01,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:01,992 INFO L87 Difference]: Start difference. First operand 1710 states and 2252 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13:45:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:02,178 INFO L93 Difference]: Finished difference Result 2423 states and 2818 transitions. [2025-03-17 13:45:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 15 [2025-03-17 13:45:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:02,184 INFO L225 Difference]: With dead ends: 2423 [2025-03-17 13:45:02,184 INFO L226 Difference]: Without dead ends: 2423 [2025-03-17 13:45:02,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 13:45:02,185 INFO L435 NwaCegarLoop]: 1449 mSDtfsCounter, 1060 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:02,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 4045 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:45:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2025-03-17 13:45:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1397. [2025-03-17 13:45:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 857 states have (on average 1.9078179696616102) internal successors, (1635), 1374 states have internal predecessors, (1635), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 13:45:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1675 transitions. [2025-03-17 13:45:02,200 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1675 transitions. Word has length 15 [2025-03-17 13:45:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:02,200 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 1675 transitions. [2025-03-17 13:45:02,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13:45:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1675 transitions. [2025-03-17 13:45:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-17 13:45:02,200 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:02,200 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:02,208 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 13:45:02,401 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 13:45:02,401 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr599REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:02,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash 323270793, now seen corresponding path program 1 times [2025-03-17 13:45:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:02,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149136212] [2025-03-17 13:45:02,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:02,407 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 13:45:02,410 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 13:45:02,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 13:45:02,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 13:45:02,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:02,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:02,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:02,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:02,586 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 13:45:02,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:02,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149136212] [2025-03-17 13:45:02,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149136212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:02,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:02,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897561637] [2025-03-17 13:45:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:02,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:02,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:02,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:02,587 INFO L87 Difference]: Start difference. First operand 1397 states and 1675 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:04,044 INFO L93 Difference]: Finished difference Result 1776 states and 2149 transitions. [2025-03-17 13:45:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-17 13:45:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:04,048 INFO L225 Difference]: With dead ends: 1776 [2025-03-17 13:45:04,048 INFO L226 Difference]: Without dead ends: 1776 [2025-03-17 13:45:04,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:04,048 INFO L435 NwaCegarLoop]: 741 mSDtfsCounter, 883 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:04,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1630 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:45:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2025-03-17 13:45:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1374. [2025-03-17 13:45:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 857 states have (on average 1.85414235705951) internal successors, (1589), 1351 states have internal predecessors, (1589), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 13:45:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1629 transitions. [2025-03-17 13:45:04,061 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1629 transitions. Word has length 17 [2025-03-17 13:45:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:04,061 INFO L471 AbstractCegarLoop]: Abstraction has 1374 states and 1629 transitions. [2025-03-17 13:45:04,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1629 transitions. [2025-03-17 13:45:04,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-17 13:45:04,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:04,062 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:04,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:45:04,262 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 13:45:04,262 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:04,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 323270794, now seen corresponding path program 1 times [2025-03-17 13:45:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749649000] [2025-03-17 13:45:04,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:04,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:04,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:04,265 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 13:45:04,267 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 13:45:04,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 13:45:04,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 13:45:04,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:04,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:04,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:45:04,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:04,421 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 13:45:04,504 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 13:45:04,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:04,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:04,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749649000] [2025-03-17 13:45:04,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749649000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:04,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694062437] [2025-03-17 13:45:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:04,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:04,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:04,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:04,506 INFO L87 Difference]: Start difference. First operand 1374 states and 1629 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:07,191 INFO L93 Difference]: Finished difference Result 2013 states and 2391 transitions. [2025-03-17 13:45:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:45:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-17 13:45:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:07,196 INFO L225 Difference]: With dead ends: 2013 [2025-03-17 13:45:07,197 INFO L226 Difference]: Without dead ends: 2013 [2025-03-17 13:45:07,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:45:07,197 INFO L435 NwaCegarLoop]: 1329 mSDtfsCounter, 737 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3512 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:07,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 3512 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-17 13:45:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2025-03-17 13:45:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1488. [2025-03-17 13:45:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 971 states have (on average 1.7785787847579815) internal successors, (1727), 1465 states have internal predecessors, (1727), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 13:45:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1767 transitions. [2025-03-17 13:45:07,219 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1767 transitions. Word has length 17 [2025-03-17 13:45:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:07,219 INFO L471 AbstractCegarLoop]: Abstraction has 1488 states and 1767 transitions. [2025-03-17 13:45:07,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1767 transitions. [2025-03-17 13:45:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-17 13:45:07,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:07,220 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:07,229 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 13:45:07,420 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 13:45:07,420 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:07,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2024330296, now seen corresponding path program 1 times [2025-03-17 13:45:07,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:07,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386415747] [2025-03-17 13:45:07,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:07,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:07,423 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 13:45:07,425 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 13:45:07,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 13:45:07,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 13:45:07,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:07,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:07,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 13:45:07,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:07,643 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 13:45:07,823 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 13:45:07,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:08,283 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 13:45:08,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:08,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386415747] [2025-03-17 13:45:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386415747] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:08,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:45:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-03-17 13:45:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431967315] [2025-03-17 13:45:08,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:08,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 13:45:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:08,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 13:45:08,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-17 13:45:08,284 INFO L87 Difference]: Start difference. First operand 1488 states and 1767 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 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 13:45:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:15,595 INFO L93 Difference]: Finished difference Result 2369 states and 2881 transitions. [2025-03-17 13:45:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:45:15,596 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-03-17 13:45:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:15,605 INFO L225 Difference]: With dead ends: 2369 [2025-03-17 13:45:15,605 INFO L226 Difference]: Without dead ends: 2369 [2025-03-17 13:45:15,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:45:15,606 INFO L435 NwaCegarLoop]: 1383 mSDtfsCounter, 2181 mSDsluCounter, 3972 mSDsCounter, 0 mSdLazyCounter, 3949 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 5355 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:15,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 5355 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3949 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2025-03-17 13:45:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-03-17 13:45:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1652. [2025-03-17 13:45:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1135 states have (on average 1.7259911894273128) internal successors, (1959), 1629 states have internal predecessors, (1959), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 13:45:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1999 transitions. [2025-03-17 13:45:15,624 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1999 transitions. Word has length 36 [2025-03-17 13:45:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:15,625 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 1999 transitions. [2025-03-17 13:45:15,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 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 13:45:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1999 transitions. [2025-03-17 13:45:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-17 13:45:15,627 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:15,627 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 13:45:15,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:15,831 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 13:45:15,832 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:15,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1865703015, now seen corresponding path program 1 times [2025-03-17 13:45:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946526326] [2025-03-17 13:45:15,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:15,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:15,834 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 13:45:15,835 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 13:45:15,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-17 13:45:16,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-17 13:45:16,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:16,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:16,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:16,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:16,070 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 13:45:16,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:16,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946526326] [2025-03-17 13:45:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946526326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:16,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:16,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018354087] [2025-03-17 13:45:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:16,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:16,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:16,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:16,071 INFO L87 Difference]: Start difference. First operand 1652 states and 1999 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:16,131 INFO L93 Difference]: Finished difference Result 1341 states and 1563 transitions. [2025-03-17 13:45:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:16,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-17 13:45:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:16,133 INFO L225 Difference]: With dead ends: 1341 [2025-03-17 13:45:16,134 INFO L226 Difference]: Without dead ends: 1341 [2025-03-17 13:45:16,134 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 13:45:16,134 INFO L435 NwaCegarLoop]: 1108 mSDtfsCounter, 56 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3251 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 13:45:16,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3251 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2025-03-17 13:45:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2025-03-17 13:45:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 845 states have (on average 1.8) internal successors, (1521), 1316 states have internal predecessors, (1521), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 13:45:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1561 transitions. [2025-03-17 13:45:16,145 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1561 transitions. Word has length 52 [2025-03-17 13:45:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:16,145 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 1561 transitions. [2025-03-17 13:45:16,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1561 transitions. [2025-03-17 13:45:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-17 13:45:16,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:16,147 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 13:45:16,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:45:16,348 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 13:45:16,348 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:16,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash -362723743, now seen corresponding path program 1 times [2025-03-17 13:45:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204239357] [2025-03-17 13:45:16,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:16,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:16,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:16,353 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 13:45:16,354 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 13:45:16,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-17 13:45:16,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-17 13:45:16,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:16,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:16,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:45:16,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:16,587 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 13:45:16,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-17 13:45:16,620 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-17 13:45:16,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2025-03-17 13:45:16,852 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 13:45:16,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:16,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:16,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204239357] [2025-03-17 13:45:16,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204239357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:16,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170875057] [2025-03-17 13:45:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:16,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:16,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:16,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:16,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:16,853 INFO L87 Difference]: Start difference. First operand 1339 states and 1561 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:19,092 INFO L93 Difference]: Finished difference Result 2441 states and 2859 transitions. [2025-03-17 13:45:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-17 13:45:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:19,098 INFO L225 Difference]: With dead ends: 2441 [2025-03-17 13:45:19,098 INFO L226 Difference]: Without dead ends: 2441 [2025-03-17 13:45:19,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 13:45:19,099 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 961 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:19,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 2709 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 13:45:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2025-03-17 13:45:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1800. [2025-03-17 13:45:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1290 states have (on average 1.783720930232558) internal successors, (2301), 1764 states have internal predecessors, (2301), 35 states have call successors, (35), 9 states have call predecessors, (35), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2025-03-17 13:45:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2367 transitions. [2025-03-17 13:45:19,118 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2367 transitions. Word has length 60 [2025-03-17 13:45:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:19,119 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2367 transitions. [2025-03-17 13:45:19,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2367 transitions. [2025-03-17 13:45:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-17 13:45:19,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:19,120 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 13:45:19,132 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 13:45:19,320 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 13:45:19,320 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:19,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash -362723742, now seen corresponding path program 1 times [2025-03-17 13:45:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026417819] [2025-03-17 13:45:19,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:19,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:19,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:19,324 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 13:45:19,325 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 13:45:19,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-17 13:45:19,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-17 13:45:19,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:19,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:19,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 13:45:19,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:45:19,572 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 13:45:19,632 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-17 13:45:19,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-03-17 13:45:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:20,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:20,093 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:20,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026417819] [2025-03-17 13:45:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026417819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202243271] [2025-03-17 13:45:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:20,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:20,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:20,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:20,100 INFO L87 Difference]: Start difference. First operand 1800 states and 2367 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:21,936 INFO L93 Difference]: Finished difference Result 1805 states and 2373 transitions. [2025-03-17 13:45:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:21,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-17 13:45:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:21,941 INFO L225 Difference]: With dead ends: 1805 [2025-03-17 13:45:21,941 INFO L226 Difference]: Without dead ends: 1805 [2025-03-17 13:45:21,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:21,941 INFO L435 NwaCegarLoop]: 1096 mSDtfsCounter, 21 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:21,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2321 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:45:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2025-03-17 13:45:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2025-03-17 13:45:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1294 states have (on average 1.7812982998454405) internal successors, (2305), 1768 states have internal predecessors, (2305), 36 states have call successors, (36), 10 states have call predecessors, (36), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-17 13:45:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2373 transitions. [2025-03-17 13:45:21,960 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2373 transitions. Word has length 60 [2025-03-17 13:45:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:21,960 INFO L471 AbstractCegarLoop]: Abstraction has 1805 states and 2373 transitions. [2025-03-17 13:45:21,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2373 transitions. [2025-03-17 13:45:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:45:21,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:21,961 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:21,974 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 13:45:22,163 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 13:45:22,164 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:22,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1042212380, now seen corresponding path program 1 times [2025-03-17 13:45:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221905393] [2025-03-17 13:45:22,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:22,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:22,168 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 13:45:22,169 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 13:45:22,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 13:45:22,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:45:22,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:22,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:22,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:45:22,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:22,502 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 13:45:22,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:22,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221905393] [2025-03-17 13:45:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221905393] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:22,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:22,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 13:45:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069497508] [2025-03-17 13:45:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:22,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:45:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:22,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:45:22,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:45:22,503 INFO L87 Difference]: Start difference. First operand 1805 states and 2373 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:22,568 INFO L93 Difference]: Finished difference Result 1813 states and 2381 transitions. [2025-03-17 13:45:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 13:45:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-17 13:45:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:22,572 INFO L225 Difference]: With dead ends: 1813 [2025-03-17 13:45:22,572 INFO L226 Difference]: Without dead ends: 1813 [2025-03-17 13:45:22,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:45:22,572 INFO L435 NwaCegarLoop]: 1116 mSDtfsCounter, 25 mSDsluCounter, 4533 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:22,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5649 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2025-03-17 13:45:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1812. [2025-03-17 13:45:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1299 states have (on average 1.7782909930715936) internal successors, (2310), 1774 states have internal predecessors, (2310), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-17 13:45:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2380 transitions. [2025-03-17 13:45:22,590 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2380 transitions. Word has length 68 [2025-03-17 13:45:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:22,591 INFO L471 AbstractCegarLoop]: Abstraction has 1812 states and 2380 transitions. [2025-03-17 13:45:22,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2380 transitions. [2025-03-17 13:45:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:45:22,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:22,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:22,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:22,792 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 13:45:22,792 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:22,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 847528827, now seen corresponding path program 1 times [2025-03-17 13:45:22,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:22,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587393006] [2025-03-17 13:45:22,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:22,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:22,795 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 13:45:22,796 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 13:45:22,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:45:23,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:45:23,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:23,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:23,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:45:23,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:23,153 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 13:45:23,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-17 13:45:23,158 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 13:45:23,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:23,158 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587393006] [2025-03-17 13:45:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587393006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:23,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758620663] [2025-03-17 13:45:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:23,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:23,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:23,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:23,160 INFO L87 Difference]: Start difference. First operand 1812 states and 2380 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:27,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 13:45:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:30,715 INFO L93 Difference]: Finished difference Result 2203 states and 2886 transitions. [2025-03-17 13:45:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:45:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2025-03-17 13:45:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:30,720 INFO L225 Difference]: With dead ends: 2203 [2025-03-17 13:45:30,720 INFO L226 Difference]: Without dead ends: 2203 [2025-03-17 13:45:30,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 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 13:45:30,720 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 756 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:30,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 2105 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1868 Invalid, 3 Unknown, 0 Unchecked, 7.5s Time] [2025-03-17 13:45:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2025-03-17 13:45:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1809. [2025-03-17 13:45:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1299 states have (on average 1.7736720554272518) internal successors, (2304), 1771 states have internal predecessors, (2304), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-17 13:45:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2374 transitions. [2025-03-17 13:45:30,755 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2374 transitions. Word has length 71 [2025-03-17 13:45:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:30,755 INFO L471 AbstractCegarLoop]: Abstraction has 1809 states and 2374 transitions. [2025-03-17 13:45:30,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2374 transitions. [2025-03-17 13:45:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:45:30,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:30,756 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:30,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:45:30,956 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 13:45:30,956 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:30,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash 847528828, now seen corresponding path program 1 times [2025-03-17 13:45:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453543056] [2025-03-17 13:45:30,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:30,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:30,960 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 13:45:30,961 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 13:45:31,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:45:31,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:45:31,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:31,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:31,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 13:45:31,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:31,204 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 13:45:31,507 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2025-03-17 13:45:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:45:31,522 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 13:45:31,529 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:45:31,529 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 13:45:31,534 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 13:45:31,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:31,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:31,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453543056] [2025-03-17 13:45:31,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453543056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:31,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:31,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:45:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322668618] [2025-03-17 13:45:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:31,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:45:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:31,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:45:31,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-03-17 13:45:31,536 INFO L87 Difference]: Start difference. First operand 1809 states and 2374 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:35,126 INFO L93 Difference]: Finished difference Result 2829 states and 3688 transitions. [2025-03-17 13:45:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:45:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2025-03-17 13:45:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:35,131 INFO L225 Difference]: With dead ends: 2829 [2025-03-17 13:45:35,131 INFO L226 Difference]: Without dead ends: 2829 [2025-03-17 13:45:35,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-03-17 13:45:35,131 INFO L435 NwaCegarLoop]: 1153 mSDtfsCounter, 1393 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1909 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:35,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 2885 Invalid, 4968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3030 Invalid, 0 Unknown, 1909 Unchecked, 3.5s Time] [2025-03-17 13:45:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2025-03-17 13:45:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1801. [2025-03-17 13:45:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1299 states have (on average 1.7613548883756736) internal successors, (2288), 1763 states have internal predecessors, (2288), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-17 13:45:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2358 transitions. [2025-03-17 13:45:35,153 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2358 transitions. Word has length 71 [2025-03-17 13:45:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:35,153 INFO L471 AbstractCegarLoop]: Abstraction has 1801 states and 2358 transitions. [2025-03-17 13:45:35,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2358 transitions. [2025-03-17 13:45:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-17 13:45:35,154 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:35,154 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:35,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:45:35,354 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 13:45:35,354 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:35,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -285143082, now seen corresponding path program 1 times [2025-03-17 13:45:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925259054] [2025-03-17 13:45:35,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:35,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:35,358 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 13:45:35,359 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 13:45:35,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-17 13:45:35,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-17 13:45:35,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:35,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:35,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:45:35,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:35,593 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 13:45:35,613 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 13:45:35,648 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 13:45:35,680 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 13:45:35,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:35,680 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925259054] [2025-03-17 13:45:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925259054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 13:45:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094821410] [2025-03-17 13:45:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:45:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:35,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:45:35,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:45:35,681 INFO L87 Difference]: Start difference. First operand 1801 states and 2358 transitions. Second operand has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:45:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:38,378 INFO L93 Difference]: Finished difference Result 1814 states and 2372 transitions. [2025-03-17 13:45:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:45:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2025-03-17 13:45:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:38,381 INFO L225 Difference]: With dead ends: 1814 [2025-03-17 13:45:38,381 INFO L226 Difference]: Without dead ends: 1814 [2025-03-17 13:45:38,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 13:45:38,382 INFO L435 NwaCegarLoop]: 1102 mSDtfsCounter, 13 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:38,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4740 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-17 13:45:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2025-03-17 13:45:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1813. [2025-03-17 13:45:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1309 states have (on average 1.758594346829641) internal successors, (2302), 1773 states have internal predecessors, (2302), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-17 13:45:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2372 transitions. [2025-03-17 13:45:38,401 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2372 transitions. Word has length 78 [2025-03-17 13:45:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:38,401 INFO L471 AbstractCegarLoop]: Abstraction has 1813 states and 2372 transitions. [2025-03-17 13:45:38,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:45:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2372 transitions. [2025-03-17 13:45:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-17 13:45:38,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:38,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:38,413 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 13:45:38,602 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 13:45:38,602 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:38,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash -249500947, now seen corresponding path program 1 times [2025-03-17 13:45:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251935174] [2025-03-17 13:45:38,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:38,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:38,605 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 13:45:38,605 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 13:45:38,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-17 13:45:38,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-17 13:45:38,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:38,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:38,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 13:45:38,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:38,880 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 13:45:38,907 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 13:45:38,910 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 13:45:38,938 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 13:45:38,996 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 13:45:38,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:38,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:38,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251935174] [2025-03-17 13:45:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251935174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:38,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 13:45:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382992251] [2025-03-17 13:45:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:38,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 13:45:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:38,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 13:45:38,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:45:38,997 INFO L87 Difference]: Start difference. First operand 1813 states and 2372 transitions. Second operand has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:42,751 INFO L93 Difference]: Finished difference Result 1813 states and 2370 transitions. [2025-03-17 13:45:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:45:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2025-03-17 13:45:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:42,754 INFO L225 Difference]: With dead ends: 1813 [2025-03-17 13:45:42,754 INFO L226 Difference]: Without dead ends: 1813 [2025-03-17 13:45:42,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:45:42,755 INFO L435 NwaCegarLoop]: 1098 mSDtfsCounter, 12 mSDsluCounter, 4552 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:42,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5650 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-17 13:45:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2025-03-17 13:45:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2025-03-17 13:45:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1309 states have (on average 1.757066462948816) internal successors, (2300), 1773 states have internal predecessors, (2300), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-17 13:45:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2370 transitions. [2025-03-17 13:45:42,770 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2370 transitions. Word has length 79 [2025-03-17 13:45:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:42,771 INFO L471 AbstractCegarLoop]: Abstraction has 1813 states and 2370 transitions. [2025-03-17 13:45:42,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:45:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2370 transitions. [2025-03-17 13:45:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 13:45:42,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:42,771 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:42,784 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 13:45:42,972 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 13:45:42,972 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:42,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 153838638, now seen corresponding path program 1 times [2025-03-17 13:45:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:42,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124066427] [2025-03-17 13:45:42,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:42,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:42,976 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 13:45:42,978 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 13:45:43,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 13:45:43,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 13:45:43,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:43,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:43,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:45:43,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:43,213 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 13:45:43,277 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 13:45:43,287 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 13:45:43,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:43,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124066427] [2025-03-17 13:45:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124066427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 13:45:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542008065] [2025-03-17 13:45:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:43,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:45:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:43,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:45:43,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:45:43,288 INFO L87 Difference]: Start difference. First operand 1813 states and 2370 transitions. Second operand has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:45:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:45,807 INFO L93 Difference]: Finished difference Result 1840 states and 2406 transitions. [2025-03-17 13:45:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:45:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 85 [2025-03-17 13:45:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:45,810 INFO L225 Difference]: With dead ends: 1840 [2025-03-17 13:45:45,811 INFO L226 Difference]: Without dead ends: 1840 [2025-03-17 13:45:45,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:45:45,813 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 42 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:45,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 4405 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 13:45:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2025-03-17 13:45:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1825. [2025-03-17 13:45:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1319 states have (on average 1.7543593631539045) internal successors, (2314), 1783 states have internal predecessors, (2314), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 30 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-17 13:45:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2386 transitions. [2025-03-17 13:45:45,841 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2386 transitions. Word has length 85 [2025-03-17 13:45:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:45,842 INFO L471 AbstractCegarLoop]: Abstraction has 1825 states and 2386 transitions. [2025-03-17 13:45:45,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:45:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2386 transitions. [2025-03-17 13:45:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 13:45:45,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:45,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:45,854 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 13:45:46,043 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 13:45:46,043 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:46,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 153838639, now seen corresponding path program 1 times [2025-03-17 13:45:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939178712] [2025-03-17 13:45:46,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:46,046 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 13:45:46,047 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 13:45:46,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 13:45:46,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 13:45:46,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:46,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:46,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:45:46,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:46,315 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 13:45:46,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:46,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939178712] [2025-03-17 13:45:46,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939178712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:46,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:46,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:45:46,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139229688] [2025-03-17 13:45:46,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:46,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:46,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:46,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:46,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:46,316 INFO L87 Difference]: Start difference. First operand 1825 states and 2386 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 13:45:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:46,364 INFO L93 Difference]: Finished difference Result 1825 states and 2384 transitions. [2025-03-17 13:45:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 85 [2025-03-17 13:45:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:46,370 INFO L225 Difference]: With dead ends: 1825 [2025-03-17 13:45:46,370 INFO L226 Difference]: Without dead ends: 1821 [2025-03-17 13:45:46,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:46,372 INFO L435 NwaCegarLoop]: 1107 mSDtfsCounter, 3 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:46,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3313 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:46,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2025-03-17 13:45:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2025-03-17 13:45:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1315 states have (on average 1.7551330798479088) internal successors, (2308), 1781 states have internal predecessors, (2308), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-17 13:45:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2380 transitions. [2025-03-17 13:45:46,390 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2380 transitions. Word has length 85 [2025-03-17 13:45:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:46,390 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2380 transitions. [2025-03-17 13:45:46,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 13:45:46,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2380 transitions. [2025-03-17 13:45:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:45:46,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:46,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:46,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-17 13:45:46,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:46,591 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:46,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -136055306, now seen corresponding path program 1 times [2025-03-17 13:45:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055347265] [2025-03-17 13:45:46,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:46,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:46,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:46,595 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:46,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-17 13:45:46,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 13:45:46,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:45:46,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:46,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:46,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:45:46,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:46,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:46,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:46,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055347265] [2025-03-17 13:45:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055347265] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:46,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:45:46,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-17 13:45:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228369641] [2025-03-17 13:45:46,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:46,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 13:45:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:46,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 13:45:46,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-17 13:45:46,966 INFO L87 Difference]: Start difference. First operand 1821 states and 2380 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 13:45:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:47,099 INFO L93 Difference]: Finished difference Result 1841 states and 2404 transitions. [2025-03-17 13:45:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 13:45:47,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2025-03-17 13:45:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:47,102 INFO L225 Difference]: With dead ends: 1841 [2025-03-17 13:45:47,102 INFO L226 Difference]: Without dead ends: 1833 [2025-03-17 13:45:47,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:45:47,103 INFO L435 NwaCegarLoop]: 1107 mSDtfsCounter, 20 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5518 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:47,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5518 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:45:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2025-03-17 13:45:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1829. [2025-03-17 13:45:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1323 states have (on average 1.7520786092214664) internal successors, (2318), 1789 states have internal predecessors, (2318), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-17 13:45:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2390 transitions. [2025-03-17 13:45:47,119 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2390 transitions. Word has length 86 [2025-03-17 13:45:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:47,119 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2390 transitions. [2025-03-17 13:45:47,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 13:45:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2390 transitions. [2025-03-17 13:45:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-17 13:45:47,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:47,120 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:47,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-17 13:45:47,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:47,321 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-17 13:45:47,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1000707630, now seen corresponding path program 2 times [2025-03-17 13:45:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:47,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671320516] [2025-03-17 13:45:47,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:45:47,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:47,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:47,324 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:47,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-17 13:45:47,492 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes.