./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.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_BER_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:31:03,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:31:04,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:31:04,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:31:04,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:31:04,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:31:04,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:31:04,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:31:04,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:31:04,086 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:31:04,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:31:04,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:31:04,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:31:04,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:31:04,087 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:31:04,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:31:04,088 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:31:04,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:31:04,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:31:04,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:31:04,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:31:04,090 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-09 00:31:04,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:31:04,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:31:04,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:31:04,344 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:31:04,344 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:31:04,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2025-03-09 00:31:05,494 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68920d47/faed6db49b5048f6bb3301093c18efb2/FLAGbf52cb78b [2025-03-09 00:31:05,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:31:05,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2025-03-09 00:31:05,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68920d47/faed6db49b5048f6bb3301093c18efb2/FLAGbf52cb78b [2025-03-09 00:31:05,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68920d47/faed6db49b5048f6bb3301093c18efb2 [2025-03-09 00:31:05,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:31:05,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:31:05,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:31:05,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:31:05,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:31:05,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:31:05" (1/1) ... [2025-03-09 00:31:05,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e5710d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:05, skipping insertion in model container [2025-03-09 00:31:05,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:31:05" (1/1) ... [2025-03-09 00:31:05,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:31:06,346 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:06,381 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:06,386 WARN 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 00:31:06,389 WARN 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 00:31:06,393 WARN 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 00:31:06,422 WARN 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 00:31:06,427 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:06,429 WARN 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 00:31:06,429 WARN 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 00:31:06,430 WARN 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 00:31:06,431 WARN 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 00:31:06,432 WARN 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 00:31:06,433 WARN 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 00:31:06,433 WARN 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 00:31:06,438 WARN 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 00:31:06,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:31:06,466 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 00:31:06,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2363e3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:06, skipping insertion in model container [2025-03-09 00:31:06,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:31:06,467 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:31:06,468 INFO L158 Benchmark]: Toolchain (without parser) took 536.19ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 90.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:31:06,469 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:31:06,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.38ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 90.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:31:06,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.38ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 90.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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_BER_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:31:08,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:31:08,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:31:08,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:31:08,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:31:08,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:31:08,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:31:08,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:31:08,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:31:08,390 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:31:08,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:31:08,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:31:08,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:31:08,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:31:08,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:31:08,393 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:31:08,394 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:31:08,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:31:08,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:31:08,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:31:08,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:31:08,395 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-09 00:31:08,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:31:08,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:31:08,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:31:08,663 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:31:08,664 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:31:08,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2025-03-09 00:31:09,851 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f78e2207/21ef936920274784ad9d5aa99d095cfb/FLAGb1feb5fdc [2025-03-09 00:31:10,103 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:31:10,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2025-03-09 00:31:10,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f78e2207/21ef936920274784ad9d5aa99d095cfb/FLAGb1feb5fdc [2025-03-09 00:31:10,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f78e2207/21ef936920274784ad9d5aa99d095cfb [2025-03-09 00:31:10,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:31:10,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:31:10,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:31:10,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:31:10,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:31:10,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:31:10" (1/1) ... [2025-03-09 00:31:10,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b3a924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:10, skipping insertion in model container [2025-03-09 00:31:10,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:31:10" (1/1) ... [2025-03-09 00:31:10,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:31:10,710 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:10,734 WARN 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 00:31:10,737 WARN 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 00:31:10,740 WARN 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 00:31:10,746 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 00:31:10,773 WARN 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 00:31:10,774 WARN 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 00:31:10,776 WARN 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 00:31:10,776 WARN 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 00:31:10,777 WARN 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 00:31:10,780 WARN 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 00:31:10,781 WARN 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 00:31:10,781 WARN 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 00:31:10,782 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:10,787 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:31:10,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:31:10,807 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:31:10,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:31:10,860 WARN 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 00:31:10,879 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 00:31:10,880 WARN 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 00:31:10,886 WARN 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 00:31:10,891 WARN 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 00:31:10,910 WARN 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 00:31:10,913 WARN 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 00:31:10,915 WARN 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 00:31:10,915 WARN 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 00:31:10,916 WARN 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 00:31:10,917 WARN 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 00:31:10,918 WARN 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 00:31:10,918 WARN 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 00:31:10,918 WARN 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 00:31:10,920 WARN 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 00:31:10,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:31:10,925 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:31:11,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:31:11,058 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:31:11,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11 WrapperNode [2025-03-09 00:31:11,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:31:11,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:31:11,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:31:11,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:31:11,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,129 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1014 [2025-03-09 00:31:11,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:31:11,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:31:11,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:31:11,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:31:11,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,210 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-09 00:31:11,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,250 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:31:11,271 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:31:11,271 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:31:11,271 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:31:11,272 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (1/1) ... [2025-03-09 00:31:11,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:31:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:11,296 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 00:31:11,298 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 00:31:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:31:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:31:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:31:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:31:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:31:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:31:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:31:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:31:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:31:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:31:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:31:11,486 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:31:11,487 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:31:14,395 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:31:14,477 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-03-09 00:31:14,477 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:31:14,508 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:31:14,513 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:31:14,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:31:14 BoogieIcfgContainer [2025-03-09 00:31:14,513 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:31:14,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:31:14,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:31:14,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:31:14,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:31:10" (1/3) ... [2025-03-09 00:31:14,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d67c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:31:14, skipping insertion in model container [2025-03-09 00:31:14,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:31:11" (2/3) ... [2025-03-09 00:31:14,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d67c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:31:14, skipping insertion in model container [2025-03-09 00:31:14,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:31:14" (3/3) ... [2025-03-09 00:31:14,523 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2025-03-09 00:31:14,545 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:31:14,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test2-2.i that has 4 procedures, 1063 locations, 1 initial locations, 36 loop locations, and 525 error locations. [2025-03-09 00:31:14,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:31:14,612 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;@ba0bc1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:31:14,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-03-09 00:31:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:31:14,627 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:14,627 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:31:14,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:14,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash 37400338, now seen corresponding path program 1 times [2025-03-09 00:31:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:14,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290678611] [2025-03-09 00:31:14,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:14,647 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 00:31:14,648 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 00:31:14,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:31:14,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:31:14,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:14,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:14,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:31:14,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:14,849 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-03-09 00:31:14,853 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 00:31:14,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:14,854 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290678611] [2025-03-09 00:31:14,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290678611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:14,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:14,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251825055] [2025-03-09 00:31:14,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:14,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:14,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:14,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:14,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:31:14,883 INFO L87 Difference]: Start difference. First operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:16,605 INFO L93 Difference]: Finished difference Result 1438 states and 1539 transitions. [2025-03-09 00:31:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:16,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:31:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:16,624 INFO L225 Difference]: With dead ends: 1438 [2025-03-09 00:31:16,625 INFO L226 Difference]: Without dead ends: 1435 [2025-03-09 00:31:16,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:31:16,629 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 423 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1540 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:16,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1469 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1540 Unchecked, 1.6s Time] [2025-03-09 00:31:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2025-03-09 00:31:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1041. [2025-03-09 00:31:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 520 states have (on average 2.1) internal successors, (1092), 1036 states have internal predecessors, (1092), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1098 transitions. [2025-03-09 00:31:16,714 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1098 transitions. Word has length 4 [2025-03-09 00:31:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:16,715 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1098 transitions. [2025-03-09 00:31:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1098 transitions. [2025-03-09 00:31:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:31:16,715 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:16,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:31:16,724 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 00:31:16,916 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 00:31:16,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:16,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 37401532, now seen corresponding path program 1 times [2025-03-09 00:31:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313963337] [2025-03-09 00:31:16,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:16,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:16,920 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 00:31:16,921 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 00:31:17,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:31:17,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:31:17,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:17,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:17,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:17,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:17,042 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 00:31:17,055 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 00:31:17,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:17,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313963337] [2025-03-09 00:31:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313963337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:31:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013761109] [2025-03-09 00:31:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:17,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:31:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:17,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:31:17,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:17,058 INFO L87 Difference]: Start difference. First operand 1041 states and 1098 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:18,259 INFO L93 Difference]: Finished difference Result 1216 states and 1283 transitions. [2025-03-09 00:31:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:31:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:31:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:18,263 INFO L225 Difference]: With dead ends: 1216 [2025-03-09 00:31:18,263 INFO L226 Difference]: Without dead ends: 1216 [2025-03-09 00:31:18,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:18,264 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 962 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:18,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 769 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:31:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-03-09 00:31:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1038. [2025-03-09 00:31:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 528 states have (on average 2.0643939393939394) internal successors, (1090), 1033 states have internal predecessors, (1090), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1096 transitions. [2025-03-09 00:31:18,281 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1096 transitions. Word has length 4 [2025-03-09 00:31:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:18,282 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1096 transitions. [2025-03-09 00:31:18,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1096 transitions. [2025-03-09 00:31:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:31:18,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:18,282 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:31:18,289 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 00:31:18,484 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 00:31:18,484 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:18,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:18,485 INFO L85 PathProgramCache]: Analyzing trace with hash 37401533, now seen corresponding path program 1 times [2025-03-09 00:31:18,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:18,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646143952] [2025-03-09 00:31:18,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:18,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:18,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:18,488 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 00:31:18,488 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 00:31:18,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:31:18,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:31:18,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:18,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:18,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:31:18,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:18,581 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 00:31:18,599 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 00:31:18,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:18,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646143952] [2025-03-09 00:31:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646143952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:31:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612587417] [2025-03-09 00:31:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:18,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:31:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:18,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:31:18,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:18,600 INFO L87 Difference]: Start difference. First operand 1038 states and 1096 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:20,433 INFO L93 Difference]: Finished difference Result 1446 states and 1536 transitions. [2025-03-09 00:31:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:31:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:31:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:20,437 INFO L225 Difference]: With dead ends: 1446 [2025-03-09 00:31:20,437 INFO L226 Difference]: Without dead ends: 1446 [2025-03-09 00:31:20,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:20,442 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 440 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:20,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1469 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:31:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2025-03-09 00:31:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1161. [2025-03-09 00:31:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 652 states have (on average 2.0199386503067487) internal successors, (1317), 1156 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1323 transitions. [2025-03-09 00:31:20,467 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1323 transitions. Word has length 4 [2025-03-09 00:31:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:20,467 INFO L471 AbstractCegarLoop]: Abstraction has 1161 states and 1323 transitions. [2025-03-09 00:31:20,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1323 transitions. [2025-03-09 00:31:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:31:20,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:20,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:20,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:31:20,668 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 00:31:20,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1008455512, now seen corresponding path program 1 times [2025-03-09 00:31:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714649052] [2025-03-09 00:31:20,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:20,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:20,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:20,672 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 00:31:20,673 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 00:31:20,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:31:20,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:31:20,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:20,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:20,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:31:20,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:20,789 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 00:31:20,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:31:20,872 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 00:31:20,886 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:31:20,886 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 00:31:20,899 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 00:31:20,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:20,899 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714649052] [2025-03-09 00:31:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714649052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245870391] [2025-03-09 00:31:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:20,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:20,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:20,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:20,900 INFO L87 Difference]: Start difference. First operand 1161 states and 1323 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:22,738 INFO L93 Difference]: Finished difference Result 1328 states and 1498 transitions. [2025-03-09 00:31:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:31:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:22,742 INFO L225 Difference]: With dead ends: 1328 [2025-03-09 00:31:22,742 INFO L226 Difference]: Without dead ends: 1328 [2025-03-09 00:31:22,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 00:31:22,743 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 2198 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:22,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 438 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:31:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2025-03-09 00:31:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1026. [2025-03-09 00:31:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 528 states have (on average 2.039772727272727) internal successors, (1077), 1021 states have internal predecessors, (1077), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1083 transitions. [2025-03-09 00:31:22,758 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1083 transitions. Word has length 8 [2025-03-09 00:31:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:22,759 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1083 transitions. [2025-03-09 00:31:22,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1083 transitions. [2025-03-09 00:31:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:31:22,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:22,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:22,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 00:31:22,960 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 00:31:22,960 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:22,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350901, now seen corresponding path program 1 times [2025-03-09 00:31:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281897491] [2025-03-09 00:31:22,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:22,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:22,963 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 00:31:22,964 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 00:31:23,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:31:23,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:31:23,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:23,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:23,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:23,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:23,064 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 00:31:23,074 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 00:31:23,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:23,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281897491] [2025-03-09 00:31:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281897491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:23,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:31:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099045583] [2025-03-09 00:31:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:31:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:23,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:31:23,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:23,077 INFO L87 Difference]: Start difference. First operand 1026 states and 1083 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:24,122 INFO L93 Difference]: Finished difference Result 1189 states and 1267 transitions. [2025-03-09 00:31:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:31:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:31:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:24,125 INFO L225 Difference]: With dead ends: 1189 [2025-03-09 00:31:24,125 INFO L226 Difference]: Without dead ends: 1189 [2025-03-09 00:31:24,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 00:31:24,126 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 744 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:24,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1106 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:31:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2025-03-09 00:31:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 979. [2025-03-09 00:31:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 528 states have (on average 1.9507575757575757) internal successors, (1030), 974 states have internal predecessors, (1030), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1036 transitions. [2025-03-09 00:31:24,138 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1036 transitions. Word has length 9 [2025-03-09 00:31:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:24,138 INFO L471 AbstractCegarLoop]: Abstraction has 979 states and 1036 transitions. [2025-03-09 00:31:24,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1036 transitions. [2025-03-09 00:31:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:31:24,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:24,139 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:24,145 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 00:31:24,339 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 00:31:24,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:24,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350902, now seen corresponding path program 1 times [2025-03-09 00:31:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:24,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682750661] [2025-03-09 00:31:24,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:24,342 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 00:31:24,343 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 00:31:24,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:31:24,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:31:24,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:24,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:24,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:31:24,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:24,432 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 00:31:24,447 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 00:31:24,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:24,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:24,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682750661] [2025-03-09 00:31:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682750661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:24,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:31:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427091967] [2025-03-09 00:31:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:24,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:31:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:24,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:31:24,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:24,448 INFO L87 Difference]: Start difference. First operand 979 states and 1036 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:25,770 INFO L93 Difference]: Finished difference Result 1265 states and 1346 transitions. [2025-03-09 00:31:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:31:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:31:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:25,774 INFO L225 Difference]: With dead ends: 1265 [2025-03-09 00:31:25,774 INFO L226 Difference]: Without dead ends: 1265 [2025-03-09 00:31:25,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 00:31:25,775 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 496 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:25,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1451 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 00:31:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2025-03-09 00:31:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1006. [2025-03-09 00:31:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 565 states have (on average 1.936283185840708) internal successors, (1094), 1001 states have internal predecessors, (1094), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1100 transitions. [2025-03-09 00:31:25,796 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1100 transitions. Word has length 9 [2025-03-09 00:31:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:25,796 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1100 transitions. [2025-03-09 00:31:25,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:25,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1100 transitions. [2025-03-09 00:31:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:31:25,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:25,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:25,804 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 00:31:25,997 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 00:31:25,998 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:25,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1285481171, now seen corresponding path program 1 times [2025-03-09 00:31:25,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324707371] [2025-03-09 00:31:25,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:26,001 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 00:31:26,003 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 00:31:26,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:31:26,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:31:26,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:26,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:26,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:26,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:26,154 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 00:31:26,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:26,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324707371] [2025-03-09 00:31:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324707371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945617635] [2025-03-09 00:31:26,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:26,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:31:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:26,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:31:26,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:31:26,156 INFO L87 Difference]: Start difference. First operand 1006 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:26,305 INFO L93 Difference]: Finished difference Result 1440 states and 1589 transitions. [2025-03-09 00:31:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:31:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:31:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:26,309 INFO L225 Difference]: With dead ends: 1440 [2025-03-09 00:31:26,309 INFO L226 Difference]: Without dead ends: 1440 [2025-03-09 00:31:26,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 00:31:26,310 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 460 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:26,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 2019 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:31:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2025-03-09 00:31:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1176. [2025-03-09 00:31:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 735 states have (on average 1.8816326530612244) internal successors, (1383), 1171 states have internal predecessors, (1383), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1389 transitions. [2025-03-09 00:31:26,327 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1389 transitions. Word has length 12 [2025-03-09 00:31:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:26,328 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1389 transitions. [2025-03-09 00:31:26,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1389 transitions. [2025-03-09 00:31:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:31:26,329 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:26,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:26,336 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 00:31:26,529 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 00:31:26,530 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042993, now seen corresponding path program 1 times [2025-03-09 00:31:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640717229] [2025-03-09 00:31:26,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:26,533 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 00:31:26,540 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 00:31:26,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:31:26,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:31:26,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:26,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:26,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:26,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:26,672 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 00:31:26,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:26,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640717229] [2025-03-09 00:31:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640717229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:26,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65501961] [2025-03-09 00:31:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:26,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:26,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:26,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:26,672 INFO L87 Difference]: Start difference. First operand 1176 states and 1389 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 00:31:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:28,047 INFO L93 Difference]: Finished difference Result 1339 states and 1538 transitions. [2025-03-09 00:31:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2025-03-09 00:31:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:28,051 INFO L225 Difference]: With dead ends: 1339 [2025-03-09 00:31:28,051 INFO L226 Difference]: Without dead ends: 1339 [2025-03-09 00:31:28,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 00:31:28,051 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 961 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:28,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1207 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 00:31:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2025-03-09 00:31:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1153. [2025-03-09 00:31:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 735 states have (on average 1.819047619047619) internal successors, (1337), 1148 states have internal predecessors, (1337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1343 transitions. [2025-03-09 00:31:28,068 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1343 transitions. Word has length 13 [2025-03-09 00:31:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:28,068 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1343 transitions. [2025-03-09 00:31:28,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 00:31:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1343 transitions. [2025-03-09 00:31:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:31:28,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:28,069 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:28,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:31:28,274 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 00:31:28,274 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr194REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:28,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042994, now seen corresponding path program 1 times [2025-03-09 00:31:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801702632] [2025-03-09 00:31:28,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:28,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:28,280 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 00:31:28,282 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 00:31:28,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:31:28,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:31:28,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:28,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:28,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:31:28,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:28,387 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 00:31:28,448 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 00:31:28,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:28,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801702632] [2025-03-09 00:31:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801702632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232603839] [2025-03-09 00:31:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:28,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:28,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:28,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:28,450 INFO L87 Difference]: Start difference. First operand 1153 states and 1343 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 00:31:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:30,086 INFO L93 Difference]: Finished difference Result 1428 states and 1633 transitions. [2025-03-09 00:31:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:30,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2025-03-09 00:31:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:30,090 INFO L225 Difference]: With dead ends: 1428 [2025-03-09 00:31:30,090 INFO L226 Difference]: Without dead ends: 1428 [2025-03-09 00:31:30,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 00:31:30,091 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 333 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:30,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1881 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:31:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-03-09 00:31:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1217. [2025-03-09 00:31:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 799 states have (on average 1.7709637046307884) internal successors, (1415), 1212 states have internal predecessors, (1415), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1421 transitions. [2025-03-09 00:31:30,105 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1421 transitions. Word has length 13 [2025-03-09 00:31:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:30,105 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1421 transitions. [2025-03-09 00:31:30,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 00:31:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1421 transitions. [2025-03-09 00:31:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 00:31:30,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:30,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:30,112 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 00:31:30,310 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 00:31:30,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:30,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1391417084, now seen corresponding path program 1 times [2025-03-09 00:31:30,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:30,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475129572] [2025-03-09 00:31:30,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:30,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:30,313 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 00:31:30,314 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 00:31:30,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 00:31:30,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 00:31:30,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:30,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:30,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:30,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:30,433 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 00:31:30,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:30,434 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475129572] [2025-03-09 00:31:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475129572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:30,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494674992] [2025-03-09 00:31:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:30,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:30,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:30,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:30,435 INFO L87 Difference]: Start difference. First operand 1217 states and 1421 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 00:31:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:30,492 INFO L93 Difference]: Finished difference Result 1139 states and 1300 transitions. [2025-03-09 00:31:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:31:30,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-09 00:31:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:30,495 INFO L225 Difference]: With dead ends: 1139 [2025-03-09 00:31:30,495 INFO L226 Difference]: Without dead ends: 1139 [2025-03-09 00:31:30,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 00:31:30,495 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 45 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:30,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2722 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:31:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2025-03-09 00:31:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2025-03-09 00:31:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 740 states have (on average 1.7486486486486486) internal successors, (1294), 1134 states have internal predecessors, (1294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1300 transitions. [2025-03-09 00:31:30,508 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1300 transitions. Word has length 14 [2025-03-09 00:31:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:30,508 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1300 transitions. [2025-03-09 00:31:30,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 00:31:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1300 transitions. [2025-03-09 00:31:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 00:31:30,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:30,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:30,517 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 00:31:30,713 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 00:31:30,713 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:30,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1603207986, now seen corresponding path program 1 times [2025-03-09 00:31:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726620244] [2025-03-09 00:31:30,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:30,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:30,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:30,716 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 00:31:30,717 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 00:31:30,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 00:31:30,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 00:31:30,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:30,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:30,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:31:30,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:30,897 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-03-09 00:31:30,897 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 00:31:30,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:30,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:30,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726620244] [2025-03-09 00:31:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726620244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805665977] [2025-03-09 00:31:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:30,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:30,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:30,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:31:30,899 INFO L87 Difference]: Start difference. First operand 1139 states and 1300 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 00:31:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:31,791 INFO L93 Difference]: Finished difference Result 1324 states and 1492 transitions. [2025-03-09 00:31:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-09 00:31:31,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:31,794 INFO L225 Difference]: With dead ends: 1324 [2025-03-09 00:31:31,794 INFO L226 Difference]: Without dead ends: 1323 [2025-03-09 00:31:31,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-09 00:31:31,795 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 241 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:31,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1350 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 1188 Unchecked, 0.9s Time] [2025-03-09 00:31:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2025-03-09 00:31:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1143. [2025-03-09 00:31:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 744 states have (on average 1.7446236559139785) internal successors, (1298), 1138 states have internal predecessors, (1298), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1304 transitions. [2025-03-09 00:31:31,807 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1304 transitions. Word has length 14 [2025-03-09 00:31:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:31,808 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1304 transitions. [2025-03-09 00:31:31,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 00:31:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1304 transitions. [2025-03-09 00:31:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-09 00:31:31,808 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:31,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:31,816 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 00:31:32,012 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 00:31:32,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:32,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1840368562, now seen corresponding path program 1 times [2025-03-09 00:31:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:32,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431755624] [2025-03-09 00:31:32,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:32,014 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 00:31:32,016 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 00:31:32,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 00:31:32,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 00:31:32,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:32,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:32,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:31:32,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:32,166 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 00:31:32,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:32,166 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431755624] [2025-03-09 00:31:32,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431755624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:32,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:32,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091402800] [2025-03-09 00:31:32,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:32,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:32,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:32,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:32,167 INFO L87 Difference]: Start difference. First operand 1143 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 00:31:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:32,498 INFO L93 Difference]: Finished difference Result 1367 states and 1505 transitions. [2025-03-09 00:31:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2025-03-09 00:31:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:32,501 INFO L225 Difference]: With dead ends: 1367 [2025-03-09 00:31:32,501 INFO L226 Difference]: Without dead ends: 1363 [2025-03-09 00:31:32,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:32,502 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 380 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:32,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2761 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 00:31:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2025-03-09 00:31:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1141. [2025-03-09 00:31:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 742 states have (on average 1.7452830188679245) internal successors, (1295), 1136 states have internal predecessors, (1295), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1301 transitions. [2025-03-09 00:31:32,513 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1301 transitions. Word has length 15 [2025-03-09 00:31:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:32,513 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1301 transitions. [2025-03-09 00:31:32,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 00:31:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1301 transitions. [2025-03-09 00:31:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:31:32,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:32,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:32,523 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 00:31:32,714 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 00:31:32,715 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:32,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash -972787444, now seen corresponding path program 1 times [2025-03-09 00:31:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301540829] [2025-03-09 00:31:32,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:32,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:32,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:32,717 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 00:31:32,718 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 00:31:32,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:31:32,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:31:32,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:32,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:32,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:31:32,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:32,842 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 00:31:32,869 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 00:31:32,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:32,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301540829] [2025-03-09 00:31:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301540829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393890022] [2025-03-09 00:31:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:32,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:32,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:32,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:32,870 INFO L87 Difference]: Start difference. First operand 1141 states and 1301 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:33,962 INFO L93 Difference]: Finished difference Result 1129 states and 1265 transitions. [2025-03-09 00:31:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-09 00:31:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:33,965 INFO L225 Difference]: With dead ends: 1129 [2025-03-09 00:31:33,965 INFO L226 Difference]: Without dead ends: 1129 [2025-03-09 00:31:33,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:33,966 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 709 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:33,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1232 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:31:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2025-03-09 00:31:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1118. [2025-03-09 00:31:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 742 states have (on average 1.6832884097035041) internal successors, (1249), 1113 states have internal predecessors, (1249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1255 transitions. [2025-03-09 00:31:33,977 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1255 transitions. Word has length 18 [2025-03-09 00:31:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:33,977 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1255 transitions. [2025-03-09 00:31:33,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1255 transitions. [2025-03-09 00:31:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:31:33,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:33,978 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:33,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:31:34,178 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 00:31:34,178 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:34,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash -972787443, now seen corresponding path program 1 times [2025-03-09 00:31:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84124275] [2025-03-09 00:31:34,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:34,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:34,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:34,180 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 00:31:34,181 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 00:31:34,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:31:34,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:31:34,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:34,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:34,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:31:34,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:34,321 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 00:31:34,369 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 00:31:34,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:34,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84124275] [2025-03-09 00:31:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84124275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:34,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:31:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078070680] [2025-03-09 00:31:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:34,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:34,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:34,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:34,370 INFO L87 Difference]: Start difference. First operand 1118 states and 1255 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:35,945 INFO L93 Difference]: Finished difference Result 1497 states and 1647 transitions. [2025-03-09 00:31:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-09 00:31:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:35,948 INFO L225 Difference]: With dead ends: 1497 [2025-03-09 00:31:35,948 INFO L226 Difference]: Without dead ends: 1497 [2025-03-09 00:31:35,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:35,949 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 534 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:35,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1949 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:31:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2025-03-09 00:31:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1232. [2025-03-09 00:31:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 856 states have (on average 1.6203271028037383) internal successors, (1387), 1227 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1393 transitions. [2025-03-09 00:31:35,961 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1393 transitions. Word has length 18 [2025-03-09 00:31:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:35,961 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 1393 transitions. [2025-03-09 00:31:35,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1393 transitions. [2025-03-09 00:31:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-09 00:31:35,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:35,963 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:35,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 00:31:36,164 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 00:31:36,164 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:36,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash -707935181, now seen corresponding path program 1 times [2025-03-09 00:31:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661183679] [2025-03-09 00:31:36,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:36,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:36,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:36,167 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 00:31:36,169 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 00:31:36,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-09 00:31:36,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-09 00:31:36,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:36,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:36,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:31:36,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:36,327 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 00:31:36,472 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 00:31:36,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:31:36,782 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 00:31:36,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661183679] [2025-03-09 00:31:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661183679] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:31:36,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:31:36,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:31:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635050543] [2025-03-09 00:31:36,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:31:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:31:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:36,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:31:36,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:31:36,784 INFO L87 Difference]: Start difference. First operand 1232 states and 1393 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:41,575 INFO L93 Difference]: Finished difference Result 1853 states and 2137 transitions. [2025-03-09 00:31:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:31:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-09 00:31:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:41,581 INFO L225 Difference]: With dead ends: 1853 [2025-03-09 00:31:41,581 INFO L226 Difference]: Without dead ends: 1853 [2025-03-09 00:31:41,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:31:41,582 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 1295 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:41,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 3033 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-03-09 00:31:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2025-03-09 00:31:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1396. [2025-03-09 00:31:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1020 states have (on average 1.5872549019607842) internal successors, (1619), 1391 states have internal predecessors, (1619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1625 transitions. [2025-03-09 00:31:41,618 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1625 transitions. Word has length 37 [2025-03-09 00:31:41,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:41,618 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 1625 transitions. [2025-03-09 00:31:41,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1625 transitions. [2025-03-09 00:31:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-09 00:31:41,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:41,620 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] [2025-03-09 00:31:41,630 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 00:31:41,821 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 00:31:41,822 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:41,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -822847652, now seen corresponding path program 1 times [2025-03-09 00:31:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:41,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669962572] [2025-03-09 00:31:41,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:41,824 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 00:31:41,826 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 00:31:41,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 00:31:41,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 00:31:41,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:41,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:41,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:41,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:41,984 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 00:31:41,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:41,984 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669962572] [2025-03-09 00:31:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669962572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:41,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:41,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479184382] [2025-03-09 00:31:41,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:41,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:41,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:41,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:41,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:41,985 INFO L87 Difference]: Start difference. First operand 1396 states and 1625 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 00:31:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:42,024 INFO L93 Difference]: Finished difference Result 1378 states and 1595 transitions. [2025-03-09 00:31:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:31:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2025-03-09 00:31:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:42,027 INFO L225 Difference]: With dead ends: 1378 [2025-03-09 00:31:42,028 INFO L226 Difference]: Without dead ends: 1378 [2025-03-09 00:31:42,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 00:31:42,028 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 27 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:42,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2645 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:31:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2025-03-09 00:31:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1378. [2025-03-09 00:31:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1002 states have (on average 1.5858283433133733) internal successors, (1589), 1373 states have internal predecessors, (1589), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1595 transitions. [2025-03-09 00:31:42,040 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1595 transitions. Word has length 48 [2025-03-09 00:31:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:42,040 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1595 transitions. [2025-03-09 00:31:42,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 00:31:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1595 transitions. [2025-03-09 00:31:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 00:31:42,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:42,042 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 00:31:42,051 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 00:31:42,247 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 00:31:42,247 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:42,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1752552212, now seen corresponding path program 1 times [2025-03-09 00:31:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383663819] [2025-03-09 00:31:42,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:42,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:42,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:42,250 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 00:31:42,251 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 00:31:42,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 00:31:42,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 00:31:42,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:42,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:42,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:42,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:42,451 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 00:31:42,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:42,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383663819] [2025-03-09 00:31:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383663819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:42,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800558634] [2025-03-09 00:31:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:42,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:42,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:42,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:42,452 INFO L87 Difference]: Start difference. First operand 1378 states and 1595 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:42,498 INFO L93 Difference]: Finished difference Result 1067 states and 1159 transitions. [2025-03-09 00:31:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:31:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-09 00:31:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:42,501 INFO L225 Difference]: With dead ends: 1067 [2025-03-09 00:31:42,501 INFO L226 Difference]: Without dead ends: 1067 [2025-03-09 00:31:42,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:42,501 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 56 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2471 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 00:31:42,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2471 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:31:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2025-03-09 00:31:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2025-03-09 00:31:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 712 states have (on average 1.6165730337078652) internal successors, (1151), 1060 states have internal predecessors, (1151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1157 transitions. [2025-03-09 00:31:42,509 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1157 transitions. Word has length 52 [2025-03-09 00:31:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:42,509 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1157 transitions. [2025-03-09 00:31:42,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1157 transitions. [2025-03-09 00:31:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-09 00:31:42,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:42,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:42,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:31:42,709 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 00:31:42,710 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:42,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1169743652, now seen corresponding path program 1 times [2025-03-09 00:31:42,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:42,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058729886] [2025-03-09 00:31:42,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:42,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:42,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:42,713 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 00:31:42,718 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 00:31:42,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 00:31:42,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 00:31:42,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:42,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:42,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:31:42,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:42,876 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:31:42,876 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:31:42,877 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:31:42,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-09 00:31:42,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:31:42,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-09 00:31:42,970 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 00:31:42,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:42,970 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058729886] [2025-03-09 00:31:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058729886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:42,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:31:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463051736] [2025-03-09 00:31:42,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:42,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:31:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:42,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:31:42,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:31:42,972 INFO L87 Difference]: Start difference. First operand 1065 states and 1157 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 00:31:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:43,225 INFO L93 Difference]: Finished difference Result 1536 states and 1649 transitions. [2025-03-09 00:31:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:31:43,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-09 00:31:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:43,230 INFO L225 Difference]: With dead ends: 1536 [2025-03-09 00:31:43,230 INFO L226 Difference]: Without dead ends: 1533 [2025-03-09 00:31:43,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:31:43,230 INFO L435 NwaCegarLoop]: 1056 mSDtfsCounter, 1227 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:43,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 4209 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:31:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2025-03-09 00:31:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1013. [2025-03-09 00:31:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 660 states have (on average 1.662121212121212) internal successors, (1097), 1008 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1103 transitions. [2025-03-09 00:31:43,243 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1103 transitions. Word has length 56 [2025-03-09 00:31:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:43,243 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1103 transitions. [2025-03-09 00:31:43,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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 00:31:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1103 transitions. [2025-03-09 00:31:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-09 00:31:43,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:43,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:43,253 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 00:31:43,444 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 00:31:43,444 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:43,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1664732852, now seen corresponding path program 1 times [2025-03-09 00:31:43,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:43,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76288178] [2025-03-09 00:31:43,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:43,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:43,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:43,447 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 00:31:43,450 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 00:31:43,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-09 00:31:43,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-09 00:31:43,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:43,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:43,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:31:43,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:43,645 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 00:31:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:31:43,916 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 00:31:43,925 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:31:43,925 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 00:31:43,926 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 00:31:43,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:43,926 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76288178] [2025-03-09 00:31:43,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76288178] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:43,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:43,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377694142] [2025-03-09 00:31:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:43,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:31:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:43,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:31:43,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:43,927 INFO L87 Difference]: Start difference. First operand 1013 states and 1103 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:45,089 INFO L93 Difference]: Finished difference Result 975 states and 1065 transitions. [2025-03-09 00:31:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:31:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-09 00:31:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:45,091 INFO L225 Difference]: With dead ends: 975 [2025-03-09 00:31:45,091 INFO L226 Difference]: Without dead ends: 975 [2025-03-09 00:31:45,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:31:45,092 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 1139 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:45,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 726 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:31:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-09 00:31:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 938. [2025-03-09 00:31:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 623 states have (on average 1.581059390048154) internal successors, (985), 933 states have internal predecessors, (985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 991 transitions. [2025-03-09 00:31:45,098 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 991 transitions. Word has length 60 [2025-03-09 00:31:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:45,099 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 991 transitions. [2025-03-09 00:31:45,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 991 transitions. [2025-03-09 00:31:45,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:31:45,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:45,099 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 00:31:45,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:31:45,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:45,300 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:45,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944605, now seen corresponding path program 1 times [2025-03-09 00:31:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163646231] [2025-03-09 00:31:45,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:45,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:45,303 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:45,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:31:45,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:31:45,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:31:45,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:45,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:45,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:31:45,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:45,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:31:45,488 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 00:31:45,499 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 00:31:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:31:45,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:45,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163646231] [2025-03-09 00:31:45,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163646231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:45,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:45,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:45,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443540941] [2025-03-09 00:31:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:45,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:31:45,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:45,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:31:45,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:45,505 INFO L87 Difference]: Start difference. First operand 938 states and 991 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:46,696 INFO L93 Difference]: Finished difference Result 937 states and 990 transitions. [2025-03-09 00:31:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:31:46,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-09 00:31:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:46,698 INFO L225 Difference]: With dead ends: 937 [2025-03-09 00:31:46,698 INFO L226 Difference]: Without dead ends: 937 [2025-03-09 00:31:46,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:31:46,699 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 2 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:46,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2116 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:31:46,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-03-09 00:31:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2025-03-09 00:31:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 623 states have (on average 1.579454253611557) internal successors, (984), 932 states have internal predecessors, (984), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 990 transitions. [2025-03-09 00:31:46,706 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 990 transitions. Word has length 65 [2025-03-09 00:31:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:46,706 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 990 transitions. [2025-03-09 00:31:46,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 990 transitions. [2025-03-09 00:31:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:31:46,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:46,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:46,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 00:31:46,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:46,911 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:46,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944604, now seen corresponding path program 1 times [2025-03-09 00:31:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:46,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516080459] [2025-03-09 00:31:46,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:46,913 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:46,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:31:47,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:31:47,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:31:47,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:47,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:47,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:31:47,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:47,093 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 00:31:47,113 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 00:31:47,122 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 00:31:47,143 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 00:31:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:31:47,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:47,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516080459] [2025-03-09 00:31:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516080459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:47,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368012600] [2025-03-09 00:31:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:47,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:31:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:47,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:31:47,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:31:47,154 INFO L87 Difference]: Start difference. First operand 937 states and 990 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:48,675 INFO L93 Difference]: Finished difference Result 936 states and 989 transitions. [2025-03-09 00:31:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:31:48,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-09 00:31:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:48,677 INFO L225 Difference]: With dead ends: 936 [2025-03-09 00:31:48,677 INFO L226 Difference]: Without dead ends: 936 [2025-03-09 00:31:48,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:31:48,677 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 1 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:48,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2136 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:31:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2025-03-09 00:31:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2025-03-09 00:31:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 622 states have (on average 1.5803858520900322) internal successors, (983), 931 states have internal predecessors, (983), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:31:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 989 transitions. [2025-03-09 00:31:48,684 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 989 transitions. Word has length 65 [2025-03-09 00:31:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:48,684 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 989 transitions. [2025-03-09 00:31:48,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:31:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 989 transitions. [2025-03-09 00:31:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:31:48,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:48,685 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:48,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 00:31:48,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:48,885 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:48,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -676132640, now seen corresponding path program 1 times [2025-03-09 00:31:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401678303] [2025-03-09 00:31:48,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:48,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:48,888 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:48,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 00:31:49,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:31:49,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:31:49,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:49,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:49,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:31:49,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:49,075 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 00:31:49,119 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 00:31:49,125 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 00:31:49,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:49,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401678303] [2025-03-09 00:31:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401678303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:49,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:49,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:31:49,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164608438] [2025-03-09 00:31:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:49,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:31:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:49,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:31:49,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:31:49,127 INFO L87 Difference]: Start difference. First operand 936 states and 989 transitions. Second operand has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 00:31:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:50,554 INFO L93 Difference]: Finished difference Result 948 states and 1004 transitions. [2025-03-09 00:31:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:31:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 73 [2025-03-09 00:31:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:50,557 INFO L225 Difference]: With dead ends: 948 [2025-03-09 00:31:50,557 INFO L226 Difference]: Without dead ends: 948 [2025-03-09 00:31:50,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 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 00:31:50,559 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 6 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:50,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2977 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:31:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2025-03-09 00:31:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 942. [2025-03-09 00:31:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 627 states have (on average 1.5789473684210527) internal successors, (990), 936 states have internal predecessors, (990), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-09 00:31:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 999 transitions. [2025-03-09 00:31:50,568 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 999 transitions. Word has length 73 [2025-03-09 00:31:50,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:50,568 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 999 transitions. [2025-03-09 00:31:50,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 00:31:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 999 transitions. [2025-03-09 00:31:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:31:50,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:50,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:50,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-09 00:31:50,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:50,769 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:50,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -676132639, now seen corresponding path program 1 times [2025-03-09 00:31:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765454067] [2025-03-09 00:31:50,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:50,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:50,772 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:50,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 00:31:50,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:31:50,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:31:50,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:50,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:50,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:31:50,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:50,969 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 00:31:50,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:31:50,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765454067] [2025-03-09 00:31:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765454067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:31:50,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:31:50,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:31:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063463730] [2025-03-09 00:31:50,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:31:50,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:31:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:50,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:31:50,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:31:50,970 INFO L87 Difference]: Start difference. First operand 942 states and 999 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 00:31:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:50,991 INFO L93 Difference]: Finished difference Result 939 states and 993 transitions. [2025-03-09 00:31:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:31:50,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 73 [2025-03-09 00:31:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:50,994 INFO L225 Difference]: With dead ends: 939 [2025-03-09 00:31:50,994 INFO L226 Difference]: Without dead ends: 939 [2025-03-09 00:31:50,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 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 00:31:50,994 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 0 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:50,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2455 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:31:50,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2025-03-09 00:31:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2025-03-09 00:31:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 624 states have (on average 1.580128205128205) internal successors, (986), 934 states have internal predecessors, (986), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:31:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 993 transitions. [2025-03-09 00:31:51,012 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 993 transitions. Word has length 73 [2025-03-09 00:31:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:51,012 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 993 transitions. [2025-03-09 00:31:51,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 00:31:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 993 transitions. [2025-03-09 00:31:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-09 00:31:51,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:51,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:51,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-09 00:31:51,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:51,213 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:51,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1538854490, now seen corresponding path program 1 times [2025-03-09 00:31:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:51,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373541665] [2025-03-09 00:31:51,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:31:51,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:51,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:51,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:51,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 00:31:51,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-09 00:31:51,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-09 00:31:51,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:31:51,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:31:51,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:31:51,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:31:51,420 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 00:31:51,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:31:51,456 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 00:31:51,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:31:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373541665] [2025-03-09 00:31:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373541665] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:31:51,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:31:51,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:31:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163669159] [2025-03-09 00:31:51,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:31:51,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:31:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:31:51,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:31:51,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:31:51,457 INFO L87 Difference]: Start difference. First operand 939 states and 993 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 00:31:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:31:51,552 INFO L93 Difference]: Finished difference Result 951 states and 1010 transitions. [2025-03-09 00:31:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:31:51,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2025-03-09 00:31:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:31:51,555 INFO L225 Difference]: With dead ends: 951 [2025-03-09 00:31:51,555 INFO L226 Difference]: Without dead ends: 951 [2025-03-09 00:31:51,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:31:51,556 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 5 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:31:51,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4900 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:31:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2025-03-09 00:31:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 949. [2025-03-09 00:31:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 633 states have (on average 1.5813586097946288) internal successors, (1001), 943 states have internal predecessors, (1001), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:31:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1008 transitions. [2025-03-09 00:31:51,565 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1008 transitions. Word has length 74 [2025-03-09 00:31:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:31:51,565 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1008 transitions. [2025-03-09 00:31:51,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 00:31:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1008 transitions. [2025-03-09 00:31:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-09 00:31:51,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:31:51,565 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:31:51,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 00:31:51,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:51,766 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:31:51,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:31:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1372195424, now seen corresponding path program 2 times [2025-03-09 00:31:51,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:31:51,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094693485] [2025-03-09 00:31:51,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:31:51,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:31:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:31:51,769 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:31:51,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-09 00:31:51,903 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-09 00:32:04,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 00:32:04,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:32:04,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:32:04,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-09 00:32:04,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:32:04,891 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:32:04,891 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 00:32:04,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:32:05,006 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:32:05,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-09 00:32:05,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-09 00:32:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 00:32:05,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:32:05,090 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-09 00:32:05,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-09 00:32:05,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:32:05,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094693485] [2025-03-09 00:32:05,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094693485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:32:05,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1648846611] [2025-03-09 00:32:05,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:32:05,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:32:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:32:05,123 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:32:05,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-03-09 00:32:05,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-09 00:32:06,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 00:32:06,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:32:06,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:32:06,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:32:06,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:32:06,211 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 00:32:06,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:32:06,381 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 00:32:06,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1648846611] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:32:06,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:32:06,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-09 00:32:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206410074] [2025-03-09 00:32:06,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:32:06,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 00:32:06,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:32:06,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 00:32:06,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2025-03-09 00:32:06,383 INFO L87 Difference]: Start difference. First operand 949 states and 1008 transitions. Second operand has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:32:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:32:11,724 INFO L93 Difference]: Finished difference Result 965 states and 1031 transitions. [2025-03-09 00:32:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 00:32:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2025-03-09 00:32:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:32:11,727 INFO L225 Difference]: With dead ends: 965 [2025-03-09 00:32:11,727 INFO L226 Difference]: Without dead ends: 961 [2025-03-09 00:32:11,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-03-09 00:32:11,728 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 609 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 5661 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 8766 SdHoareTripleChecker+Invalid, 5678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:32:11,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 8766 Invalid, 5678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5661 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-03-09 00:32:11,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2025-03-09 00:32:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 957. [2025-03-09 00:32:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 642 states have (on average 1.5763239875389408) internal successors, (1012), 951 states have internal predecessors, (1012), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:32:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1019 transitions. [2025-03-09 00:32:11,741 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1019 transitions. Word has length 77 [2025-03-09 00:32:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:32:11,741 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1019 transitions. [2025-03-09 00:32:11,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:32:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1019 transitions. [2025-03-09 00:32:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-09 00:32:11,742 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:32:11,742 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:32:11,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-09 00:32:11,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-03-09 00:32:12,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-09 00:32:12,143 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:32:12,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:32:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1622975649, now seen corresponding path program 1 times [2025-03-09 00:32:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:32:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953250407] [2025-03-09 00:32:12,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:32:12,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:32:12,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:32:12,145 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:32:12,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-09 00:32:12,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-09 00:32:12,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-09 00:32:12,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:32:12,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:32:12,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 00:32:12,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:32:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:32:12,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:32:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:32:12,830 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:32:12,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953250407] [2025-03-09 00:32:12,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953250407] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:32:12,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:32:12,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-09 00:32:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26659570] [2025-03-09 00:32:12,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:32:12,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 00:32:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:32:12,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 00:32:12,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-09 00:32:12,832 INFO L87 Difference]: Start difference. First operand 957 states and 1019 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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 00:32:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:32:13,877 INFO L93 Difference]: Finished difference Result 981 states and 1058 transitions. [2025-03-09 00:32:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 00:32:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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 83 [2025-03-09 00:32:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:32:13,879 INFO L225 Difference]: With dead ends: 981 [2025-03-09 00:32:13,879 INFO L226 Difference]: Without dead ends: 975 [2025-03-09 00:32:13,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 00:32:13,880 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 15 mSDsluCounter, 10616 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:32:13,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11436 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:32:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-09 00:32:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2025-03-09 00:32:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 660 states have (on average 1.5681818181818181) internal successors, (1035), 969 states have internal predecessors, (1035), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:32:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1042 transitions. [2025-03-09 00:32:13,890 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1042 transitions. Word has length 83 [2025-03-09 00:32:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:32:13,891 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1042 transitions. [2025-03-09 00:32:13,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 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 00:32:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1042 transitions. [2025-03-09 00:32:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-09 00:32:13,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:32:13,891 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:32:13,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-09 00:32:14,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:32:14,092 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-09 00:32:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:32:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1375717665, now seen corresponding path program 2 times [2025-03-09 00:32:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:32:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637776379] [2025-03-09 00:32:14,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:32:14,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:32:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:32:14,094 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:32:14,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-09 00:32:14,249 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 00:32:25,737 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 00:32:25,737 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:32:25,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:32:25,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-09 00:32:25,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:32:25,837 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 00:32:25,845 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:32:25,845 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 00:32:25,864 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 00:32:25,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:32:25,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-09 00:32:25,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:32:26,254 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:32:26,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-09 00:32:26,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:32:26,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:32:26,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:32:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-09 00:32:26,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:32:26,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:32:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637776379] [2025-03-09 00:32:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637776379] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:32:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1271553497] [2025-03-09 00:32:26,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:32:26,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:32:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:32:26,718 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:32:26,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2025-03-09 00:32:26,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 00:32:27,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 00:32:27,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:32:27,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:32:27,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-09 00:32:27,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:32:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:32:28,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:32:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:32:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1271553497] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:32:29,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:32:29,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-09 00:32:29,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717986613] [2025-03-09 00:32:29,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:32:29,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-09 00:32:29,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:32:29,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-09 00:32:29,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2952, Unknown=8, NotChecked=0, Total=3660 [2025-03-09 00:32:29,799 INFO L87 Difference]: Start difference. First operand 975 states and 1042 transitions. Second operand has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)