./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:51:25,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:51:25,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:51:25,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:51:25,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:51:25,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:51:25,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:51:25,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:51:25,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:51:25,481 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:51:25,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:51:25,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:51:25,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:51:25,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:51:25,482 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:51:25,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:51:25,483 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:51:25,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:51:25,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:51:25,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:51:25,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:51:25,486 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 -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2025-03-09 00:51:25,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:51:25,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:51:25,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:51:25,725 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:51:25,726 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:51:25,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-03-09 00:51:26,880 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c51fc74/59175a7676fd48b4a02ad5cbff8493b3/FLAG72a7bfc74 [2025-03-09 00:51:27,249 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:51:27,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-03-09 00:51:27,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c51fc74/59175a7676fd48b4a02ad5cbff8493b3/FLAG72a7bfc74 [2025-03-09 00:51:27,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c51fc74/59175a7676fd48b4a02ad5cbff8493b3 [2025-03-09 00:51:27,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:51:27,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:51:27,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:51:27,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:51:27,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:51:27,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:51:27" (1/1) ... [2025-03-09 00:51:27,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58726798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:27, skipping insertion in model container [2025-03-09 00:51:27,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:51:27" (1/1) ... [2025-03-09 00:51:27,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:51:27,765 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,801 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,807 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,816 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,846 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,849 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,854 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,865 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,866 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,867 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,868 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,872 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:27,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:51:27,893 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) [2025-03-09 00:51:27,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29adc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:27, skipping insertion in model container [2025-03-09 00:51:27,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:51:27,894 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:51:27,895 INFO L158 Benchmark]: Toolchain (without parser) took 451.37ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 89.4MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:51:27,898 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:51:27,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.88ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 89.4MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:51:27,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.88ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 89.4MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:51:29,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:51:29,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:51:29,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:51:29,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:51:29,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:51:29,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:51:29,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:51:29,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:51:29,726 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:51:29,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:51:29,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:51:29,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:51:29,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:51:29,727 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:51:29,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:51:29,727 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:51:29,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:51:29,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:51:29,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:51:29,728 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:51:29,728 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:51:29,728 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:51:29,729 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:51:29,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:51:29,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:51:29,729 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 -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2025-03-09 00:51:29,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:51:29,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:51:29,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:51:29,990 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:51:29,990 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:51:29,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-03-09 00:51:31,100 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112164f3d/f12569c96ff44ad5b56693d82ab59266/FLAG0547fb470 [2025-03-09 00:51:31,363 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:51:31,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-03-09 00:51:31,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112164f3d/f12569c96ff44ad5b56693d82ab59266/FLAG0547fb470 [2025-03-09 00:51:31,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112164f3d/f12569c96ff44ad5b56693d82ab59266 [2025-03-09 00:51:31,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:51:31,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:51:31,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:51:31,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:51:31,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:51:31,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:51:31" (1/1) ... [2025-03-09 00:51:31,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf7c507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:31, skipping insertion in model container [2025-03-09 00:51:31,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:51:31" (1/1) ... [2025-03-09 00:51:31,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:51:31,682 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,709 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,712 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,715 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,722 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,751 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,762 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,763 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,764 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,765 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,766 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,769 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:51:31,782 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:51:31,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:51:31,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,837 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,838 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,843 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,854 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,855 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,857 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,861 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,870 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,875 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,877 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,879 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:51:31,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:51:31,887 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:51:31,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:51:32,017 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:51:32,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32 WrapperNode [2025-03-09 00:51:32,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:51:32,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:51:32,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:51:32,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:51:32,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,146 INFO L138 Inliner]: procedures = 179, calls = 387, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1298 [2025-03-09 00:51:32,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:51:32,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:51:32,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:51:32,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:51:32,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,249 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2025-03-09 00:51:32,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,297 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:51:32,327 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:51:32,327 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:51:32,327 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:51:32,328 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (1/1) ... [2025-03-09 00:51:32,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:51:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:32,354 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) [2025-03-09 00:51:32,356 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 [2025-03-09 00:51:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:51:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:51:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:51:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:51:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:51:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:51:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:51:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:51:32,542 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:51:32,544 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:51:35,956 INFO L? ?]: Removed 1544 outVars from TransFormulas that were not future-live. [2025-03-09 00:51:35,956 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:51:35,988 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:51:35,988 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:51:35,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:51:35 BoogieIcfgContainer [2025-03-09 00:51:35,988 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:51:35,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:51:35,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:51:35,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:51:35,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:51:31" (1/3) ... [2025-03-09 00:51:35,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107b8c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:51:35, skipping insertion in model container [2025-03-09 00:51:35,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:51:32" (2/3) ... [2025-03-09 00:51:35,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107b8c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:51:35, skipping insertion in model container [2025-03-09 00:51:35,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:51:35" (3/3) ... [2025-03-09 00:51:35,998 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2025-03-09 00:51:36,010 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:51:36,011 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-2.i that has 4 procedures, 1446 locations, 1 initial locations, 39 loop locations, and 733 error locations. [2025-03-09 00:51:36,062 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:51:36,071 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;@274e2dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:51:36,071 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-03-09 00:51:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 1441 states, 695 states have (on average 2.2489208633093525) internal successors, (1563), 1432 states have internal predecessors, (1563), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:51:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:51:36,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:36,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:51:36,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:36,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393918, now seen corresponding path program 1 times [2025-03-09 00:51:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:36,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583925022] [2025-03-09 00:51:36,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:36,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:36,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:36,096 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) [2025-03-09 00:51:36,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:51:36,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:51:36,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:51:36,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:36,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:36,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-09 00:51:36,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:36,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:36,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583925022] [2025-03-09 00:51:36,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583925022] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:36,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:36,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:51:36,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976588347] [2025-03-09 00:51:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:36,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:51:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:36,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:51:36,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:51:36,261 INFO L87 Difference]: Start difference. First operand has 1441 states, 695 states have (on average 2.2489208633093525) internal successors, (1563), 1432 states have internal predecessors, (1563), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-03-09 00:51:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:36,313 INFO L93 Difference]: Finished difference Result 1422 states and 1505 transitions. [2025-03-09 00:51:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:51:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2025-03-09 00:51:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:36,325 INFO L225 Difference]: With dead ends: 1422 [2025-03-09 00:51:36,325 INFO L226 Difference]: Without dead ends: 1420 [2025-03-09 00:51:36,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:51:36,328 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:36,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:51:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2025-03-09 00:51:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2025-03-09 00:51:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 685 states have (on average 2.1474452554744525) internal successors, (1471), 1411 states have internal predecessors, (1471), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:51:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1503 transitions. [2025-03-09 00:51:36,406 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1503 transitions. Word has length 5 [2025-03-09 00:51:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:36,406 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1503 transitions. [2025-03-09 00:51:36,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-03-09 00:51:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1503 transitions. [2025-03-09 00:51:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:51:36,407 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:36,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:51:36,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:51:36,608 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 [2025-03-09 00:51:36,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:36,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393949, now seen corresponding path program 1 times [2025-03-09 00:51:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469324812] [2025-03-09 00:51:36,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:36,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:36,611 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) [2025-03-09 00:51:36,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:51:36,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:51:36,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:51:36,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:36,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:36,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:51:36,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:36,750 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 [2025-03-09 00:51:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:36,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:36,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469324812] [2025-03-09 00:51:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469324812] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:36,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:36,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:51:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487956362] [2025-03-09 00:51:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:36,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:51:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:36,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:51:36,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:36,768 INFO L87 Difference]: Start difference. First operand 1420 states and 1503 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-09 00:51:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:38,234 INFO L93 Difference]: Finished difference Result 1327 states and 1411 transitions. [2025-03-09 00:51:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:51:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-03-09 00:51:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:38,238 INFO L225 Difference]: With dead ends: 1327 [2025-03-09 00:51:38,238 INFO L226 Difference]: Without dead ends: 1327 [2025-03-09 00:51:38,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:38,239 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 1035 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:38,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 910 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:51:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2025-03-09 00:51:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1326. [2025-03-09 00:51:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 685 states have (on average 2.01021897810219) internal successors, (1377), 1317 states have internal predecessors, (1377), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:51:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1409 transitions. [2025-03-09 00:51:38,277 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1409 transitions. Word has length 5 [2025-03-09 00:51:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:38,277 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1409 transitions. [2025-03-09 00:51:38,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-09 00:51:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1409 transitions. [2025-03-09 00:51:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:51:38,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:38,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:51:38,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:38,480 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 [2025-03-09 00:51:38,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr731REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:38,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393950, now seen corresponding path program 1 times [2025-03-09 00:51:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844546085] [2025-03-09 00:51:38,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:38,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:38,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:38,483 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) [2025-03-09 00:51:38,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:51:38,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:51:38,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:51:38,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:38,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:38,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:51:38,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:38,584 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 [2025-03-09 00:51:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:38,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:38,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844546085] [2025-03-09 00:51:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844546085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:38,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:51:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879894614] [2025-03-09 00:51:38,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:38,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:51:38,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:38,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:51:38,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:38,599 INFO L87 Difference]: Start difference. First operand 1326 states and 1409 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-09 00:51:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:40,521 INFO L93 Difference]: Finished difference Result 1643 states and 1746 transitions. [2025-03-09 00:51:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:51:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-03-09 00:51:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:40,526 INFO L225 Difference]: With dead ends: 1643 [2025-03-09 00:51:40,526 INFO L226 Difference]: Without dead ends: 1643 [2025-03-09 00:51:40,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:40,527 INFO L435 NwaCegarLoop]: 1163 mSDtfsCounter, 517 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:40,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1743 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:51:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2025-03-09 00:51:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1491. [2025-03-09 00:51:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 860 states have (on average 1.9709302325581395) internal successors, (1695), 1482 states have internal predecessors, (1695), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:51:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1727 transitions. [2025-03-09 00:51:40,547 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1727 transitions. Word has length 5 [2025-03-09 00:51:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:40,548 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 1727 transitions. [2025-03-09 00:51:40,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-09 00:51:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1727 transitions. [2025-03-09 00:51:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:51:40,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:40,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:51:40,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:40,748 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 [2025-03-09 00:51:40,749 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:40,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1556107022, now seen corresponding path program 1 times [2025-03-09 00:51:40,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:40,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415186780] [2025-03-09 00:51:40,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:40,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:40,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:40,752 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) [2025-03-09 00:51:40,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:51:40,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:51:40,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:51:40,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:40,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:40,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:51:40,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:40,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:40,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:40,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415186780] [2025-03-09 00:51:40,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415186780] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:40,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:40,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:51:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051866080] [2025-03-09 00:51:40,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:40,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:40,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:40,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:40,859 INFO L87 Difference]: Start difference. First operand 1491 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-09 00:51:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:41,407 INFO L93 Difference]: Finished difference Result 2265 states and 2635 transitions. [2025-03-09 00:51:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-03-09 00:51:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:41,414 INFO L225 Difference]: With dead ends: 2265 [2025-03-09 00:51:41,414 INFO L226 Difference]: Without dead ends: 2265 [2025-03-09 00:51:41,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:41,415 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 686 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:41,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 3944 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:51:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2025-03-09 00:51:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1966. [2025-03-09 00:51:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1335 states have (on average 1.945318352059925) internal successors, (2597), 1954 states have internal predecessors, (2597), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2635 transitions. [2025-03-09 00:51:41,443 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2635 transitions. Word has length 5 [2025-03-09 00:51:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:41,444 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2635 transitions. [2025-03-09 00:51:41,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-09 00:51:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2635 transitions. [2025-03-09 00:51:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:51:41,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:41,444 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:51:41,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:41,644 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 [2025-03-09 00:51:41,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:41,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 994606260, now seen corresponding path program 1 times [2025-03-09 00:51:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203943890] [2025-03-09 00:51:41,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:41,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:41,648 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) [2025-03-09 00:51:41,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:51:41,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:51:41,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:51:41,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:41,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:41,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:51:41,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:41,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:41,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:41,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203943890] [2025-03-09 00:51:41,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203943890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:41,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:41,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:51:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349307235] [2025-03-09 00:51:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:41,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:51:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:41,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:51:41,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:41,756 INFO L87 Difference]: Start difference. First operand 1966 states and 2635 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:41,899 INFO L93 Difference]: Finished difference Result 2046 states and 2582 transitions. [2025-03-09 00:51:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:51:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:51:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:41,907 INFO L225 Difference]: With dead ends: 2046 [2025-03-09 00:51:41,907 INFO L226 Difference]: Without dead ends: 2046 [2025-03-09 00:51:41,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:41,909 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 312 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:41,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 2801 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:51:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2025-03-09 00:51:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1831. [2025-03-09 00:51:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1200 states have (on average 1.955) internal successors, (2346), 1819 states have internal predecessors, (2346), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2384 transitions. [2025-03-09 00:51:41,942 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2384 transitions. Word has length 6 [2025-03-09 00:51:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:41,942 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2384 transitions. [2025-03-09 00:51:41,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2384 transitions. [2025-03-09 00:51:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:51:41,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:41,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:41,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:51:42,143 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 [2025-03-09 00:51:42,143 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:42,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1961123408, now seen corresponding path program 1 times [2025-03-09 00:51:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566037308] [2025-03-09 00:51:42,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:42,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:42,146 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) [2025-03-09 00:51:42,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:51:42,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:51:42,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:51:42,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:42,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:42,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 00:51:42,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:42,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:42,251 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566037308] [2025-03-09 00:51:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566037308] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:51:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686896548] [2025-03-09 00:51:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:42,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:51:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:42,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:51:42,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:42,252 INFO L87 Difference]: Start difference. First operand 1831 states and 2384 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:43,297 INFO L93 Difference]: Finished difference Result 2011 states and 2572 transitions. [2025-03-09 00:51:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:51:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:51:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:43,302 INFO L225 Difference]: With dead ends: 2011 [2025-03-09 00:51:43,302 INFO L226 Difference]: Without dead ends: 2010 [2025-03-09 00:51:43,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:51:43,303 INFO L435 NwaCegarLoop]: 1312 mSDtfsCounter, 184 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:43,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2084 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:51:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2025-03-09 00:51:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2025-03-09 00:51:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1202 states have (on average 1.9534109816971714) internal successors, (2348), 1821 states have internal predecessors, (2348), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2386 transitions. [2025-03-09 00:51:43,327 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2386 transitions. Word has length 8 [2025-03-09 00:51:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:43,328 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2386 transitions. [2025-03-09 00:51:43,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2386 transitions. [2025-03-09 00:51:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:51:43,328 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:43,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:43,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:51:43,533 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 [2025-03-09 00:51:43,533 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -665074965, now seen corresponding path program 1 times [2025-03-09 00:51:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:43,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392676643] [2025-03-09 00:51:43,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:43,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:43,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:43,536 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) [2025-03-09 00:51:43,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:51:43,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:51:43,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:51:43,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:43,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:43,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:51:43,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:43,654 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:43,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392676643] [2025-03-09 00:51:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392676643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:43,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:51:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860111684] [2025-03-09 00:51:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:43,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:43,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:43,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:43,655 INFO L87 Difference]: Start difference. First operand 1833 states and 2386 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:44,229 INFO L93 Difference]: Finished difference Result 2048 states and 2583 transitions. [2025-03-09 00:51:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:51:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:44,234 INFO L225 Difference]: With dead ends: 2048 [2025-03-09 00:51:44,234 INFO L226 Difference]: Without dead ends: 2044 [2025-03-09 00:51:44,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:51:44,237 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 314 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:44,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 4052 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:51:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2025-03-09 00:51:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1829. [2025-03-09 00:51:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1198 states have (on average 1.9557595993322203) internal successors, (2343), 1817 states have internal predecessors, (2343), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2381 transitions. [2025-03-09 00:51:44,262 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2381 transitions. Word has length 9 [2025-03-09 00:51:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:44,263 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2381 transitions. [2025-03-09 00:51:44,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2381 transitions. [2025-03-09 00:51:44,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:51:44,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:44,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:44,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:51:44,464 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 [2025-03-09 00:51:44,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr726REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:44,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 774372183, now seen corresponding path program 1 times [2025-03-09 00:51:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247058066] [2025-03-09 00:51:44,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:44,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:44,467 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) [2025-03-09 00:51:44,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:51:44,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:51:44,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:51:44,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:44,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:44,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:51:44,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:44,585 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 [2025-03-09 00:51:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:44,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:44,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247058066] [2025-03-09 00:51:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247058066] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:44,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:44,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:51:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135567462] [2025-03-09 00:51:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:44,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:44,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:44,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:44,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:44,610 INFO L87 Difference]: Start difference. First operand 1829 states and 2381 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:46,274 INFO L93 Difference]: Finished difference Result 1814 states and 2343 transitions. [2025-03-09 00:51:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:46,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:51:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:46,278 INFO L225 Difference]: With dead ends: 1814 [2025-03-09 00:51:46,278 INFO L226 Difference]: Without dead ends: 1814 [2025-03-09 00:51:46,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:51:46,279 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 1086 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:46,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1462 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:51:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2025-03-09 00:51:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1806. [2025-03-09 00:51:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1198 states have (on average 1.9173622704507514) internal successors, (2297), 1794 states have internal predecessors, (2297), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2335 transitions. [2025-03-09 00:51:46,299 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2335 transitions. Word has length 10 [2025-03-09 00:51:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:46,300 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2335 transitions. [2025-03-09 00:51:46,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2335 transitions. [2025-03-09 00:51:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:51:46,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:46,300 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:46,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:46,500 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 [2025-03-09 00:51:46,502 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:46,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash 774372184, now seen corresponding path program 1 times [2025-03-09 00:51:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:46,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708152950] [2025-03-09 00:51:46,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:46,504 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) [2025-03-09 00:51:46,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:51:46,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:51:46,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:51:46,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:46,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:46,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:51:46,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:46,615 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 [2025-03-09 00:51:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:46,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:46,656 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708152950] [2025-03-09 00:51:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708152950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:51:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909320198] [2025-03-09 00:51:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:46,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:46,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:46,656 INFO L87 Difference]: Start difference. First operand 1806 states and 2335 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:49,047 INFO L93 Difference]: Finished difference Result 2088 states and 2508 transitions. [2025-03-09 00:51:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:51:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:49,051 INFO L225 Difference]: With dead ends: 2088 [2025-03-09 00:51:49,051 INFO L226 Difference]: Without dead ends: 2088 [2025-03-09 00:51:49,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:51:49,051 INFO L435 NwaCegarLoop]: 1445 mSDtfsCounter, 641 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:49,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2869 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-09 00:51:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2025-03-09 00:51:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1920. [2025-03-09 00:51:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1312 states have (on average 1.8559451219512195) internal successors, (2435), 1908 states have internal predecessors, (2435), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2473 transitions. [2025-03-09 00:51:49,071 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2473 transitions. Word has length 10 [2025-03-09 00:51:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:49,071 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2473 transitions. [2025-03-09 00:51:49,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2473 transitions. [2025-03-09 00:51:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 00:51:49,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:49,072 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] [2025-03-09 00:51:49,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:49,272 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 [2025-03-09 00:51:49,273 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:49,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 599915937, now seen corresponding path program 1 times [2025-03-09 00:51:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214721442] [2025-03-09 00:51:49,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:49,275 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) [2025-03-09 00:51:49,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:51:49,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 00:51:49,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 00:51:49,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:49,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:49,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:51:49,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:49,441 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 [2025-03-09 00:51:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:49,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:51:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:49,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214721442] [2025-03-09 00:51:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214721442] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:51:49,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:51:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:51:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818925867] [2025-03-09 00:51:49,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:51:49,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:51:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:49,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:51:49,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:51:49,834 INFO L87 Difference]: Start difference. First operand 1920 states and 2473 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:56,608 INFO L93 Difference]: Finished difference Result 2475 states and 3038 transitions. [2025-03-09 00:51:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:51:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-03-09 00:51:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:56,613 INFO L225 Difference]: With dead ends: 2475 [2025-03-09 00:51:56,613 INFO L226 Difference]: Without dead ends: 2475 [2025-03-09 00:51:56,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:51:56,614 INFO L435 NwaCegarLoop]: 1486 mSDtfsCounter, 2232 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:56,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 3886 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2025-03-09 00:51:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2025-03-09 00:51:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2084. [2025-03-09 00:51:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1476 states have (on average 1.806910569105691) internal successors, (2667), 2072 states have internal predecessors, (2667), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2705 transitions. [2025-03-09 00:51:56,640 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2705 transitions. Word has length 29 [2025-03-09 00:51:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:56,641 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 2705 transitions. [2025-03-09 00:51:56,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2705 transitions. [2025-03-09 00:51:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-09 00:51:56,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:56,644 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] [2025-03-09 00:51:56,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:51:56,845 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 [2025-03-09 00:51:56,845 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:56,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 895251391, now seen corresponding path program 1 times [2025-03-09 00:51:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313108817] [2025-03-09 00:51:56,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:56,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:56,848 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) [2025-03-09 00:51:56,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:51:56,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 00:51:56,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 00:51:56,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:56,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:57,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:51:57,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:57,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:57,044 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313108817] [2025-03-09 00:51:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313108817] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:57,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:57,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:51:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780608781] [2025-03-09 00:51:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:57,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:57,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:57,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:57,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:57,045 INFO L87 Difference]: Start difference. First operand 2084 states and 2705 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-03-09 00:51:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:57,120 INFO L93 Difference]: Finished difference Result 1773 states and 2269 transitions. [2025-03-09 00:51:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:51:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2025-03-09 00:51:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:57,124 INFO L225 Difference]: With dead ends: 1773 [2025-03-09 00:51:57,125 INFO L226 Difference]: Without dead ends: 1773 [2025-03-09 00:51:57,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:51:57,126 INFO L435 NwaCegarLoop]: 1315 mSDtfsCounter, 56 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3872 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 [2025-03-09 00:51:57,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3872 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:51:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-03-09 00:51:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1771. [2025-03-09 00:51:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1186 states have (on average 1.8794266441821248) internal successors, (2229), 1759 states have internal predecessors, (2229), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2267 transitions. [2025-03-09 00:51:57,147 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2267 transitions. Word has length 44 [2025-03-09 00:51:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:57,147 INFO L471 AbstractCegarLoop]: Abstraction has 1771 states and 2267 transitions. [2025-03-09 00:51:57,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-03-09 00:51:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2267 transitions. [2025-03-09 00:51:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 00:51:57,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:57,150 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] [2025-03-09 00:51:57,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:51:57,350 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 [2025-03-09 00:51:57,351 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:57,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash 266609527, now seen corresponding path program 1 times [2025-03-09 00:51:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017103996] [2025-03-09 00:51:57,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:57,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:57,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:57,354 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) [2025-03-09 00:51:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:51:57,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 00:51:57,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 00:51:57,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:57,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:57,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:51:57,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:57,535 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 [2025-03-09 00:51:57,541 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 [2025-03-09 00:51:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:51:57,862 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 [2025-03-09 00:51:57,874 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:51:57,875 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 [2025-03-09 00:51:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:57,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:57,887 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:57,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017103996] [2025-03-09 00:51:57,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017103996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:57,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:57,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:51:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963549406] [2025-03-09 00:51:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:57,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:57,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:57,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:57,888 INFO L87 Difference]: Start difference. First operand 1771 states and 2267 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:59,298 INFO L93 Difference]: Finished difference Result 1687 states and 2142 transitions. [2025-03-09 00:51:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:59,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-09 00:51:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:59,302 INFO L225 Difference]: With dead ends: 1687 [2025-03-09 00:51:59,302 INFO L226 Difference]: Without dead ends: 1687 [2025-03-09 00:51:59,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:59,304 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 1796 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:59,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 734 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:51:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2025-03-09 00:51:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1512. [2025-03-09 00:51:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1011 states have (on average 1.7566765578635015) internal successors, (1776), 1500 states have internal predecessors, (1776), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:51:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1814 transitions. [2025-03-09 00:51:59,318 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1814 transitions. Word has length 52 [2025-03-09 00:51:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:59,318 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 1814 transitions. [2025-03-09 00:51:59,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:51:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1814 transitions. [2025-03-09 00:51:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:51:59,319 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:59,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:59,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:51:59,523 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 [2025-03-09 00:51:59,523 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:51:59,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash 245828561, now seen corresponding path program 1 times [2025-03-09 00:51:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406298880] [2025-03-09 00:51:59,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:59,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:59,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:59,528 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) [2025-03-09 00:51:59,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:51:59,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:51:59,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:51:59,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:59,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:59,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:51:59,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:59,708 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 [2025-03-09 00:51:59,718 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 [2025-03-09 00:51:59,737 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 [2025-03-09 00:51:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:59,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:59,745 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406298880] [2025-03-09 00:51:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406298880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:51:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140359285] [2025-03-09 00:51:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:59,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:51:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:59,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:51:59,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:51:59,746 INFO L87 Difference]: Start difference. First operand 1512 states and 1814 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-09 00:52:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:01,507 INFO L93 Difference]: Finished difference Result 1511 states and 1812 transitions. [2025-03-09 00:52:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:52:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2025-03-09 00:52:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:01,510 INFO L225 Difference]: With dead ends: 1511 [2025-03-09 00:52:01,510 INFO L226 Difference]: Without dead ends: 1511 [2025-03-09 00:52:01,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:52:01,511 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 2 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:01,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3170 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:52:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2025-03-09 00:52:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1511. [2025-03-09 00:52:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1011 states have (on average 1.7546983184965381) internal successors, (1774), 1499 states have internal predecessors, (1774), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:52:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1812 transitions. [2025-03-09 00:52:01,523 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1812 transitions. Word has length 57 [2025-03-09 00:52:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:01,524 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 1812 transitions. [2025-03-09 00:52:01,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-09 00:52:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1812 transitions. [2025-03-09 00:52:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:52:01,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:01,524 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:01,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 00:52:01,725 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 [2025-03-09 00:52:01,725 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:01,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 245828562, now seen corresponding path program 1 times [2025-03-09 00:52:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:01,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418583709] [2025-03-09 00:52:01,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:01,728 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) [2025-03-09 00:52:01,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:52:01,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:52:01,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:52:01,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:01,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:01,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:52:01,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:01,903 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 [2025-03-09 00:52:01,916 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 [2025-03-09 00:52:01,923 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 [2025-03-09 00:52:01,965 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 [2025-03-09 00:52:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:01,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:01,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418583709] [2025-03-09 00:52:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418583709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:52:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794859711] [2025-03-09 00:52:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:01,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:52:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:01,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:52:01,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:01,980 INFO L87 Difference]: Start difference. First operand 1511 states and 1812 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-09 00:52:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:04,107 INFO L93 Difference]: Finished difference Result 1510 states and 1810 transitions. [2025-03-09 00:52:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:52:04,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2025-03-09 00:52:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:04,111 INFO L225 Difference]: With dead ends: 1510 [2025-03-09 00:52:04,111 INFO L226 Difference]: Without dead ends: 1510 [2025-03-09 00:52:04,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:52:04,111 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 1 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:04,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3201 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:52:04,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2025-03-09 00:52:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1510. [2025-03-09 00:52:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1009 states have (on average 1.7561942517343905) internal successors, (1772), 1498 states have internal predecessors, (1772), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:52:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1810 transitions. [2025-03-09 00:52:04,123 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1810 transitions. Word has length 57 [2025-03-09 00:52:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:04,123 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 1810 transitions. [2025-03-09 00:52:04,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-03-09 00:52:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1810 transitions. [2025-03-09 00:52:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:52:04,124 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:04,124 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:04,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:52:04,324 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 [2025-03-09 00:52:04,324 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:04,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1106786322, now seen corresponding path program 1 times [2025-03-09 00:52:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642886999] [2025-03-09 00:52:04,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:04,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:04,327 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) [2025-03-09 00:52:04,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:52:04,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:52:04,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:52:04,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:04,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:04,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:52:04,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:04,505 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 [2025-03-09 00:52:04,556 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 [2025-03-09 00:52:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:04,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:04,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:04,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642886999] [2025-03-09 00:52:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642886999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:04,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:04,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:52:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601891367] [2025-03-09 00:52:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:04,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:52:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:04,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:52:04,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:52:04,567 INFO L87 Difference]: Start difference. First operand 1510 states and 1810 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:52:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:07,146 INFO L93 Difference]: Finished difference Result 1528 states and 1840 transitions. [2025-03-09 00:52:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:52:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-09 00:52:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:07,150 INFO L225 Difference]: With dead ends: 1528 [2025-03-09 00:52:07,150 INFO L226 Difference]: Without dead ends: 1528 [2025-03-09 00:52:07,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:52:07,150 INFO L435 NwaCegarLoop]: 1224 mSDtfsCounter, 12 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:07,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4992 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:52:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2025-03-09 00:52:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1519. [2025-03-09 00:52:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1017 states have (on average 1.7531956735496559) internal successors, (1783), 1505 states have internal predecessors, (1783), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2025-03-09 00:52:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1830 transitions. [2025-03-09 00:52:07,166 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1830 transitions. Word has length 65 [2025-03-09 00:52:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:07,167 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 1830 transitions. [2025-03-09 00:52:07,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:52:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1830 transitions. [2025-03-09 00:52:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:52:07,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:07,167 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:07,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:52:07,368 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 [2025-03-09 00:52:07,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:07,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1106786321, now seen corresponding path program 1 times [2025-03-09 00:52:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:07,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825485091] [2025-03-09 00:52:07,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:07,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:07,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:07,370 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) [2025-03-09 00:52:07,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:52:07,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:52:07,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:52:07,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:07,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:07,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:07,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:07,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:07,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825485091] [2025-03-09 00:52:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825485091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:07,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:07,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:52:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947951390] [2025-03-09 00:52:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:07,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:07,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:07,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:07,577 INFO L87 Difference]: Start difference. First operand 1519 states and 1830 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:52:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:07,614 INFO L93 Difference]: Finished difference Result 1513 states and 1816 transitions. [2025-03-09 00:52:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-09 00:52:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:07,621 INFO L225 Difference]: With dead ends: 1513 [2025-03-09 00:52:07,621 INFO L226 Difference]: Without dead ends: 1513 [2025-03-09 00:52:07,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:07,621 INFO L435 NwaCegarLoop]: 1240 mSDtfsCounter, 0 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:07,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3712 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:52:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2025-03-09 00:52:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1513. [2025-03-09 00:52:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1011 states have (on average 1.7556874381800198) internal successors, (1775), 1501 states have internal predecessors, (1775), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:52:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1816 transitions. [2025-03-09 00:52:07,639 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1816 transitions. Word has length 65 [2025-03-09 00:52:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:07,639 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 1816 transitions. [2025-03-09 00:52:07,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:52:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1816 transitions. [2025-03-09 00:52:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:52:07,639 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:07,639 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] [2025-03-09 00:52:07,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-09 00:52:07,844 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 [2025-03-09 00:52:07,844 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:07,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1864411992, now seen corresponding path program 1 times [2025-03-09 00:52:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073844634] [2025-03-09 00:52:07,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:07,847 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) [2025-03-09 00:52:07,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:52:07,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:52:08,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:52:08,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:08,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:08,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:52:08,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:08,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:52:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:08,111 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073844634] [2025-03-09 00:52:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073844634] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:52:08,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:52:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:52:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959128961] [2025-03-09 00:52:08,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:52:08,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:52:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:08,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:52:08,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:52:08,112 INFO L87 Difference]: Start difference. First operand 1513 states and 1816 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:52:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:08,215 INFO L93 Difference]: Finished difference Result 1525 states and 1835 transitions. [2025-03-09 00:52:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:52:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2025-03-09 00:52:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:08,219 INFO L225 Difference]: With dead ends: 1525 [2025-03-09 00:52:08,222 INFO L226 Difference]: Without dead ends: 1525 [2025-03-09 00:52:08,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:52:08,223 INFO L435 NwaCegarLoop]: 1239 mSDtfsCounter, 8 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:08,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3712 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:52:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2025-03-09 00:52:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1523. [2025-03-09 00:52:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1020 states have (on average 1.7549019607843137) internal successors, (1790), 1510 states have internal predecessors, (1790), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:52:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1831 transitions. [2025-03-09 00:52:08,240 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1831 transitions. Word has length 66 [2025-03-09 00:52:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:08,240 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1831 transitions. [2025-03-09 00:52:08,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:52:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1831 transitions. [2025-03-09 00:52:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-09 00:52:08,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:08,241 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] [2025-03-09 00:52:08,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-09 00:52:08,441 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 [2025-03-09 00:52:08,441 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:08,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1361423762, now seen corresponding path program 2 times [2025-03-09 00:52:08,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:08,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697871736] [2025-03-09 00:52:08,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:52:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:08,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:08,444 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) [2025-03-09 00:52:08,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:52:08,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-09 00:52:18,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:52:18,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:52:18,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:18,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:52:18,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:18,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:52:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:18,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697871736] [2025-03-09 00:52:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697871736] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:52:18,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:52:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-03-09 00:52:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241858415] [2025-03-09 00:52:18,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:52:18,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 00:52:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:18,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 00:52:18,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 00:52:18,610 INFO L87 Difference]: Start difference. First operand 1523 states and 1831 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:52:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:18,938 INFO L93 Difference]: Finished difference Result 1538 states and 1852 transitions. [2025-03-09 00:52:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 00:52:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2025-03-09 00:52:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:18,941 INFO L225 Difference]: With dead ends: 1538 [2025-03-09 00:52:18,941 INFO L226 Difference]: Without dead ends: 1532 [2025-03-09 00:52:18,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2025-03-09 00:52:18,941 INFO L435 NwaCegarLoop]: 1240 mSDtfsCounter, 13 mSDsluCounter, 6180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7420 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:18,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7420 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:52:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2025-03-09 00:52:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1532. [2025-03-09 00:52:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1029 states have (on average 1.750242954324587) internal successors, (1801), 1519 states have internal predecessors, (1801), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:52:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1842 transitions. [2025-03-09 00:52:18,954 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1842 transitions. Word has length 69 [2025-03-09 00:52:18,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:18,955 INFO L471 AbstractCegarLoop]: Abstraction has 1532 states and 1842 transitions. [2025-03-09 00:52:18,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:52:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1842 transitions. [2025-03-09 00:52:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-09 00:52:18,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:18,955 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:18,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:52:19,156 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 [2025-03-09 00:52:19,156 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:52:19,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 31377966, now seen corresponding path program 3 times [2025-03-09 00:52:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427339931] [2025-03-09 00:52:19,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:52:19,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:19,158 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) [2025-03-09 00:52:19,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:52:19,288 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 75 statements into 6 equivalence classes.