./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:41:05,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:41:05,061 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:41:05,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:41:05,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:41:05,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:41:05,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:41:05,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:41:05,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:41:05,089 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:41:05,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:41:05,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:41:05,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:41:05,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:41:05,090 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:41:05,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:41:05,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:41:05,092 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:41:05,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:41:05,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:41:05,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:41:05,093 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 -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2025-03-17 13:41:05,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:41:05,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:41:05,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:41:05,328 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:41:05,328 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:41:05,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2025-03-17 13:41:06,538 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37f1a9df/09339e7a1c774de9bb9acecb09e4fde7/FLAGb81e2a061 [2025-03-17 13:41:06,865 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:41:06,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2025-03-17 13:41:06,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37f1a9df/09339e7a1c774de9bb9acecb09e4fde7/FLAGb81e2a061 [2025-03-17 13:41:07,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37f1a9df/09339e7a1c774de9bb9acecb09e4fde7 [2025-03-17 13:41:07,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:41:07,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:41:07,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:41:07,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:41:07,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:41:07,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:41:07" (1/1) ... [2025-03-17 13:41:07,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77041b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:07, skipping insertion in model container [2025-03-17 13:41:07,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:41:07" (1/1) ... [2025-03-17 13:41:07,143 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:41:07,446 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,483 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,486 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,490 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,521 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,524 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,525 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,527 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,528 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,528 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,529 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:07,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:41:07,551 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-17 13:41:07,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d431c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:07, skipping insertion in model container [2025-03-17 13:41:07,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:41:07,552 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:41:07,553 INFO L158 Benchmark]: Toolchain (without parser) took 451.92ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 91.0MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:41:07,553 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:41:07,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.00ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 91.0MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:41:07,554 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.00ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 91.0MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 778]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:41:09,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:41:09,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:41:09,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:41:09,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:41:09,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:41:09,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:41:09,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:41:09,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:41:09,370 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:41:09,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:41:09,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:41:09,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:41:09,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:41:09,370 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:41:09,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:41:09,371 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:41:09,372 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:41:09,373 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:41:09,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:41:09,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:41:09,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:41:09,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:41:09,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:41:09,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:41:09,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:41:09,374 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 -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2025-03-17 13:41:09,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:41:09,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:41:09,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:41:09,631 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:41:09,631 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:41:09,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2025-03-17 13:41:10,787 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ce4fa9d/b4a57e8c881345b4acea2e870cbd52df/FLAG34f8e46bc [2025-03-17 13:41:11,050 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:41:11,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2025-03-17 13:41:11,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ce4fa9d/b4a57e8c881345b4acea2e870cbd52df/FLAG34f8e46bc [2025-03-17 13:41:11,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ce4fa9d/b4a57e8c881345b4acea2e870cbd52df [2025-03-17 13:41:11,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:41:11,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:41:11,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:41:11,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:41:11,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:41:11,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:11,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152b0a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11, skipping insertion in model container [2025-03-17 13:41:11,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:11,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:41:11,636 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,663 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,669 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,672 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,677 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,704 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,704 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,706 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,707 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,709 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,710 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,711 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,711 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:41:11,731 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:41:11,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:41:11,771 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,790 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,833 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,834 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,835 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,835 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,841 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,841 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,842 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:41:11,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:41:11,852 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:41:11,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:41:11,953 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:41:11,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11 WrapperNode [2025-03-17 13:41:11,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:41:11,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:41:11,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:41:11,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:41:11,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:11,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,038 INFO L138 Inliner]: procedures = 180, calls = 291, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 995 [2025-03-17 13:41:12,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:41:12,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:41:12,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:41:12,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:41:12,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,113 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-17 13:41:12,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,159 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:41:12,172 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:41:12,172 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:41:12,172 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:41:12,173 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (1/1) ... [2025-03-17 13:41:12,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:41:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:12,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:41:12,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:41:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:41:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:41:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:41:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:41:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:41:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:41:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:41:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:41:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:41:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-03-17 13:41:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-03-17 13:41:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:41:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:41:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:41:12,410 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:41:12,412 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:41:15,506 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:41:15,597 INFO L? ?]: Removed 1099 outVars from TransFormulas that were not future-live. [2025-03-17 13:41:15,597 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:41:15,627 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:41:15,629 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:41:15,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:41:15 BoogieIcfgContainer [2025-03-17 13:41:15,630 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:41:15,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:41:15,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:41:15,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:41:15,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:41:11" (1/3) ... [2025-03-17 13:41:15,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d930e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:41:15, skipping insertion in model container [2025-03-17 13:41:15,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:41:11" (2/3) ... [2025-03-17 13:41:15,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d930e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:41:15, skipping insertion in model container [2025-03-17 13:41:15,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:41:15" (3/3) ... [2025-03-17 13:41:15,639 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2025-03-17 13:41:15,653 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:41:15,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test8-1.i that has 7 procedures, 1103 locations, 1 initial locations, 35 loop locations, and 529 error locations. [2025-03-17 13:41:15,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:41:15,714 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;@3597ecda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:41:15,714 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-03-17 13:41:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 1093 states, 540 states have (on average 2.2203703703703703) internal successors, (1199), 1083 states have internal predecessors, (1199), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:41:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:41:15,723 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:15,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:41:15,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:15,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 41631, now seen corresponding path program 1 times [2025-03-17 13:41:15,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:15,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536338841] [2025-03-17 13:41:15,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:15,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:15,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:41:15,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:41:15,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:41:15,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:15,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:15,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:15,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:41:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:15,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:15,913 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536338841] [2025-03-17 13:41:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536338841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:41:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138664041] [2025-03-17 13:41:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:15,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:41:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:15,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:41:15,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:15,938 INFO L87 Difference]: Start difference. First operand has 1093 states, 540 states have (on average 2.2203703703703703) internal successors, (1199), 1083 states have internal predecessors, (1199), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:17,415 INFO L93 Difference]: Finished difference Result 1096 states and 1183 transitions. [2025-03-17 13:41:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:41:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:41:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:17,430 INFO L225 Difference]: With dead ends: 1096 [2025-03-17 13:41:17,431 INFO L226 Difference]: Without dead ends: 1094 [2025-03-17 13:41:17,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:17,434 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 955 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:17,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 828 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:41:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2025-03-17 13:41:17,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1082. [2025-03-17 13:41:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 545 states have (on average 2.071559633027523) internal successors, (1129), 1071 states have internal predecessors, (1129), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-17 13:41:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1173 transitions. [2025-03-17 13:41:17,511 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1173 transitions. Word has length 2 [2025-03-17 13:41:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:17,511 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1173 transitions. [2025-03-17 13:41:17,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1173 transitions. [2025-03-17 13:41:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:41:17,512 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:17,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:41:17,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:41:17,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:17,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:17,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash 41632, now seen corresponding path program 1 times [2025-03-17 13:41:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:17,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690816296] [2025-03-17 13:41:17,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:17,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:17,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:41:17,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:41:17,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:41:17,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:17,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:17,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:41:17,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:17,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:17,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:17,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690816296] [2025-03-17 13:41:17,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690816296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:17,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:17,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:41:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195553754] [2025-03-17 13:41:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:17,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:41:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:17,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:41:17,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:17,826 INFO L87 Difference]: Start difference. First operand 1082 states and 1173 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:19,589 INFO L93 Difference]: Finished difference Result 1481 states and 1604 transitions. [2025-03-17 13:41:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:41:19,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:41:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:19,594 INFO L225 Difference]: With dead ends: 1481 [2025-03-17 13:41:19,594 INFO L226 Difference]: Without dead ends: 1481 [2025-03-17 13:41:19,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:19,595 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 427 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:19,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1599 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:41:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-17 13:41:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1292. [2025-03-17 13:41:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 755 states have (on average 2.060927152317881) internal successors, (1556), 1280 states have internal predecessors, (1556), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:41:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1602 transitions. [2025-03-17 13:41:19,635 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1602 transitions. Word has length 2 [2025-03-17 13:41:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:19,636 INFO L471 AbstractCegarLoop]: Abstraction has 1292 states and 1602 transitions. [2025-03-17 13:41:19,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1602 transitions. [2025-03-17 13:41:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:41:19,636 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:19,636 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:41:19,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 13:41:19,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:19,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:19,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash -169616581, now seen corresponding path program 1 times [2025-03-17 13:41:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:19,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157671512] [2025-03-17 13:41:19,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:19,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:19,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:41:19,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:41:19,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:41:19,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:19,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:19,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:41:19,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:19,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:20,001 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 13:41:20,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-03-17 13:41:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:20,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:20,068 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157671512] [2025-03-17 13:41:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157671512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:20,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:41:20,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778636305] [2025-03-17 13:41:20,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:20,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:20,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:20,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:20,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:20,070 INFO L87 Difference]: Start difference. First operand 1292 states and 1602 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:23,397 INFO L93 Difference]: Finished difference Result 2172 states and 2344 transitions. [2025-03-17 13:41:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:41:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:23,403 INFO L225 Difference]: With dead ends: 2172 [2025-03-17 13:41:23,403 INFO L226 Difference]: Without dead ends: 2172 [2025-03-17 13:41:23,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:23,403 INFO L435 NwaCegarLoop]: 1066 mSDtfsCounter, 1154 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:23,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 2331 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-17 13:41:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2025-03-17 13:41:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1442. [2025-03-17 13:41:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 904 states have (on average 2.043141592920354) internal successors, (1847), 1429 states have internal predecessors, (1847), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 13:41:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1895 transitions. [2025-03-17 13:41:23,431 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1895 transitions. Word has length 6 [2025-03-17 13:41:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:23,432 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 1895 transitions. [2025-03-17 13:41:23,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1895 transitions. [2025-03-17 13:41:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:41:23,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:23,432 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:23,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 13:41:23,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:23,636 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:23,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -963145524, now seen corresponding path program 1 times [2025-03-17 13:41:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:23,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951588276] [2025-03-17 13:41:23,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:23,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:23,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:23,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:23,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:41:23,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:41:23,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:41:23,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:23,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:23,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:23,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:23,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:41:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:23,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:23,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951588276] [2025-03-17 13:41:23,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951588276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:23,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:23,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:41:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224389709] [2025-03-17 13:41:23,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:41:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:23,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:41:23,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:23,764 INFO L87 Difference]: Start difference. First operand 1442 states and 1895 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:25,076 INFO L93 Difference]: Finished difference Result 1779 states and 2252 transitions. [2025-03-17 13:41:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:41:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:41:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:25,083 INFO L225 Difference]: With dead ends: 1779 [2025-03-17 13:41:25,083 INFO L226 Difference]: Without dead ends: 1779 [2025-03-17 13:41:25,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:25,085 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 944 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:25,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1319 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:41:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2025-03-17 13:41:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1394. [2025-03-17 13:41:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 904 states have (on average 1.9756637168141593) internal successors, (1786), 1381 states have internal predecessors, (1786), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 13:41:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1834 transitions. [2025-03-17 13:41:25,110 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1834 transitions. Word has length 7 [2025-03-17 13:41:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:25,110 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1834 transitions. [2025-03-17 13:41:25,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1834 transitions. [2025-03-17 13:41:25,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:41:25,111 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:25,111 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:25,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:41:25,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:25,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:25,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash -963145523, now seen corresponding path program 1 times [2025-03-17 13:41:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944573684] [2025-03-17 13:41:25,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:25,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:25,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:41:25,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:41:25,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:41:25,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:25,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:25,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:41:25,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:25,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:25,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:25,430 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944573684] [2025-03-17 13:41:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944573684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:41:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215011851] [2025-03-17 13:41:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:25,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:41:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:25,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:41:25,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:25,431 INFO L87 Difference]: Start difference. First operand 1394 states and 1834 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:27,013 INFO L93 Difference]: Finished difference Result 2096 states and 2777 transitions. [2025-03-17 13:41:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:41:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:41:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:27,018 INFO L225 Difference]: With dead ends: 2096 [2025-03-17 13:41:27,018 INFO L226 Difference]: Without dead ends: 2096 [2025-03-17 13:41:27,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:27,019 INFO L435 NwaCegarLoop]: 1212 mSDtfsCounter, 710 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:27,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1700 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:41:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2025-03-17 13:41:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1858. [2025-03-17 13:41:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1375 states have (on average 1.9752727272727273) internal successors, (2716), 1842 states have internal predecessors, (2716), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-17 13:41:27,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2770 transitions. [2025-03-17 13:41:27,056 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2770 transitions. Word has length 7 [2025-03-17 13:41:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:27,056 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2770 transitions. [2025-03-17 13:41:27,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2770 transitions. [2025-03-17 13:41:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:41:27,057 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:27,057 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:27,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:41:27,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:27,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:27,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:27,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1452557219, now seen corresponding path program 1 times [2025-03-17 13:41:27,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:27,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386351879] [2025-03-17 13:41:27,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:27,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:27,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:27,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:41:27,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:41:27,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:41:27,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:27,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:27,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:41:27,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:27,361 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:41:27,362 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:41:27,363 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:41:27,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-17 13:41:27,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:41:27,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-17 13:41:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:27,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:27,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386351879] [2025-03-17 13:41:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386351879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:27,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:27,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758400894] [2025-03-17 13:41:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:27,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:27,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:27,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:27,423 INFO L87 Difference]: Start difference. First operand 1858 states and 2770 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:27,755 INFO L93 Difference]: Finished difference Result 3068 states and 4309 transitions. [2025-03-17 13:41:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:41:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:27,764 INFO L225 Difference]: With dead ends: 3068 [2025-03-17 13:41:27,764 INFO L226 Difference]: Without dead ends: 3068 [2025-03-17 13:41:27,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:27,765 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 987 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:27,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 3138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 13:41:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2025-03-17 13:41:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1649. [2025-03-17 13:41:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1167 states have (on average 1.9622964867180805) internal successors, (2290), 1634 states have internal predecessors, (2290), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2342 transitions. [2025-03-17 13:41:27,806 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2342 transitions. Word has length 9 [2025-03-17 13:41:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:27,806 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2342 transitions. [2025-03-17 13:41:27,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2342 transitions. [2025-03-17 13:41:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:41:27,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:27,807 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:27,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:41:28,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:28,011 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:28,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2129876335, now seen corresponding path program 1 times [2025-03-17 13:41:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964954656] [2025-03-17 13:41:28,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:28,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:28,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:28,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:41:28,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:41:28,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:41:28,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:28,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:28,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:41:28,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:28,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:41:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:28,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:28,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964954656] [2025-03-17 13:41:28,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964954656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:28,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:28,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:41:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329789370] [2025-03-17 13:41:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:28,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:28,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:28,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:28,157 INFO L87 Difference]: Start difference. First operand 1649 states and 2342 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:29,596 INFO L93 Difference]: Finished difference Result 1652 states and 2328 transitions. [2025-03-17 13:41:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-17 13:41:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:29,600 INFO L225 Difference]: With dead ends: 1652 [2025-03-17 13:41:29,600 INFO L226 Difference]: Without dead ends: 1652 [2025-03-17 13:41:29,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:29,601 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 991 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:29,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1184 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:41:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2025-03-17 13:41:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1626. [2025-03-17 13:41:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1167 states have (on average 1.922879177377892) internal successors, (2244), 1611 states have internal predecessors, (2244), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2296 transitions. [2025-03-17 13:41:29,622 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2296 transitions. Word has length 16 [2025-03-17 13:41:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:29,622 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2296 transitions. [2025-03-17 13:41:29,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2296 transitions. [2025-03-17 13:41:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:41:29,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:29,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:29,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 13:41:29,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:29,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:29,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2129876336, now seen corresponding path program 1 times [2025-03-17 13:41:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228329265] [2025-03-17 13:41:29,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:29,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:29,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:29,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:41:29,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:41:29,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:41:29,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:29,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:29,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:41:29,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:29,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:30,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:30,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:30,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228329265] [2025-03-17 13:41:30,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228329265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:41:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259153145] [2025-03-17 13:41:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:30,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:30,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:30,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:30,044 INFO L87 Difference]: Start difference. First operand 1626 states and 2296 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:32,016 INFO L93 Difference]: Finished difference Result 1994 states and 2457 transitions. [2025-03-17 13:41:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:32,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-17 13:41:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:32,021 INFO L225 Difference]: With dead ends: 1994 [2025-03-17 13:41:32,021 INFO L226 Difference]: Without dead ends: 1994 [2025-03-17 13:41:32,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:32,021 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 830 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:32,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1805 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 13:41:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2025-03-17 13:41:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1740. [2025-03-17 13:41:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1281 states have (on average 1.8594847775175645) internal successors, (2382), 1725 states have internal predecessors, (2382), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2434 transitions. [2025-03-17 13:41:32,046 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2434 transitions. Word has length 16 [2025-03-17 13:41:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:32,046 INFO L471 AbstractCegarLoop]: Abstraction has 1740 states and 2434 transitions. [2025-03-17 13:41:32,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2434 transitions. [2025-03-17 13:41:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 13:41:32,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:32,048 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:32,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:41:32,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:32,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:32,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash -678966774, now seen corresponding path program 1 times [2025-03-17 13:41:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:32,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289354750] [2025-03-17 13:41:32,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:32,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:32,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:32,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:32,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:41:32,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 13:41:32,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 13:41:32,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:32,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:32,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:41:32,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:32,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:32,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:32,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289354750] [2025-03-17 13:41:32,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289354750] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:32,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:41:32,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:41:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642682607] [2025-03-17 13:41:32,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:32,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:41:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:32,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:41:32,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:41:32,905 INFO L87 Difference]: Start difference. First operand 1740 states and 2434 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:38,928 INFO L93 Difference]: Finished difference Result 2350 states and 2947 transitions. [2025-03-17 13:41:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:41:38,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-03-17 13:41:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:38,933 INFO L225 Difference]: With dead ends: 2350 [2025-03-17 13:41:38,933 INFO L226 Difference]: Without dead ends: 2350 [2025-03-17 13:41:38,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:41:38,934 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 1350 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:38,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3978 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-03-17 13:41:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2025-03-17 13:41:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1904. [2025-03-17 13:41:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1445 states have (on average 1.8089965397923875) internal successors, (2614), 1889 states have internal predecessors, (2614), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2666 transitions. [2025-03-17 13:41:38,960 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2666 transitions. Word has length 35 [2025-03-17 13:41:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:38,960 INFO L471 AbstractCegarLoop]: Abstraction has 1904 states and 2666 transitions. [2025-03-17 13:41:38,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2666 transitions. [2025-03-17 13:41:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-17 13:41:38,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:38,961 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:38,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:41:39,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:39,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr460REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:39,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1828279590, now seen corresponding path program 1 times [2025-03-17 13:41:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:39,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794295366] [2025-03-17 13:41:39,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:39,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:39,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:39,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:39,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:41:39,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 13:41:39,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 13:41:39,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:39,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:39,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:39,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:39,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:39,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794295366] [2025-03-17 13:41:39,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794295366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:39,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:39,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:41:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248826088] [2025-03-17 13:41:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:39,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:41:39,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:39,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:41:39,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:39,478 INFO L87 Difference]: Start difference. First operand 1904 states and 2666 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:39,614 INFO L93 Difference]: Finished difference Result 2116 states and 2792 transitions. [2025-03-17 13:41:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:41:39,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 47 [2025-03-17 13:41:39,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:39,619 INFO L225 Difference]: With dead ends: 2116 [2025-03-17 13:41:39,619 INFO L226 Difference]: Without dead ends: 2116 [2025-03-17 13:41:39,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:41:39,619 INFO L435 NwaCegarLoop]: 1279 mSDtfsCounter, 393 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:39,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2274 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:41:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2025-03-17 13:41:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1941. [2025-03-17 13:41:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1482 states have (on average 1.821187584345479) internal successors, (2699), 1926 states have internal predecessors, (2699), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2751 transitions. [2025-03-17 13:41:39,640 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2751 transitions. Word has length 47 [2025-03-17 13:41:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:39,640 INFO L471 AbstractCegarLoop]: Abstraction has 1941 states and 2751 transitions. [2025-03-17 13:41:39,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2751 transitions. [2025-03-17 13:41:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-17 13:41:39,642 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:39,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:39,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 13:41:39,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:39,843 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:39,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1795694071, now seen corresponding path program 1 times [2025-03-17 13:41:39,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:39,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858062946] [2025-03-17 13:41:39,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:39,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:39,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:39,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:39,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:41:39,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 13:41:40,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 13:41:40,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:40,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:40,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:40,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:40,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:40,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858062946] [2025-03-17 13:41:40,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858062946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:40,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:40,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144536583] [2025-03-17 13:41:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:40,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:40,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:40,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:40,047 INFO L87 Difference]: Start difference. First operand 1941 states and 2751 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:40,101 INFO L93 Difference]: Finished difference Result 1630 states and 2315 transitions. [2025-03-17 13:41:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:41:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-17 13:41:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:40,107 INFO L225 Difference]: With dead ends: 1630 [2025-03-17 13:41:40,108 INFO L226 Difference]: Without dead ends: 1630 [2025-03-17 13:41:40,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:40,108 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 56 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:40,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2963 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:41:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2025-03-17 13:41:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1628. [2025-03-17 13:41:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1192 states have (on average 1.8968120805369129) internal successors, (2261), 1613 states have internal predecessors, (2261), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:41:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2313 transitions. [2025-03-17 13:41:40,125 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2313 transitions. Word has length 50 [2025-03-17 13:41:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:40,126 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2313 transitions. [2025-03-17 13:41:40,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2313 transitions. [2025-03-17 13:41:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:41:40,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:40,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:40,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:41:40,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:40,327 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:40,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -353749457, now seen corresponding path program 1 times [2025-03-17 13:41:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645942091] [2025-03-17 13:41:40,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:40,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:40,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:41:40,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:41:40,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:41:40,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:40,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:40,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:41:40,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:40,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:40,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:41:40,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:41:40,862 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:41:40,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:41:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:40,867 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:40,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645942091] [2025-03-17 13:41:40,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645942091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:40,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:40,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423996431] [2025-03-17 13:41:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:40,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:41:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:40,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:41:40,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:40,868 INFO L87 Difference]: Start difference. First operand 1628 states and 2313 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:42,391 INFO L93 Difference]: Finished difference Result 1601 states and 2287 transitions. [2025-03-17 13:41:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:41:42,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-17 13:41:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:42,394 INFO L225 Difference]: With dead ends: 1601 [2025-03-17 13:41:42,394 INFO L226 Difference]: Without dead ends: 1601 [2025-03-17 13:41:42,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:41:42,395 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 1704 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:42,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 804 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:41:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2025-03-17 13:41:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1167. [2025-03-17 13:41:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 774 states have (on average 1.776485788113695) internal successors, (1375), 1155 states have internal predecessors, (1375), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:41:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1421 transitions. [2025-03-17 13:41:42,408 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1421 transitions. Word has length 58 [2025-03-17 13:41:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:42,409 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1421 transitions. [2025-03-17 13:41:42,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1421 transitions. [2025-03-17 13:41:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:41:42,411 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:42,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:42,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:41:42,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:42,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:42,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash 77648506, now seen corresponding path program 1 times [2025-03-17 13:41:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644978598] [2025-03-17 13:41:42,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:42,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:42,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:42,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:41:42,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:41:42,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:41:42,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:42,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:42,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:41:42,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:42,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:41:42,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:42,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:41:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:42,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:42,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644978598] [2025-03-17 13:41:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644978598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042166629] [2025-03-17 13:41:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:42,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:41:42,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:42,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:41:42,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:42,830 INFO L87 Difference]: Start difference. First operand 1167 states and 1421 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:44,133 INFO L93 Difference]: Finished difference Result 1166 states and 1420 transitions. [2025-03-17 13:41:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:41:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:41:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:44,135 INFO L225 Difference]: With dead ends: 1166 [2025-03-17 13:41:44,136 INFO L226 Difference]: Without dead ends: 1166 [2025-03-17 13:41:44,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:41:44,136 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 2 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:44,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2636 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:41:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2025-03-17 13:41:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2025-03-17 13:41:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 774 states have (on average 1.7751937984496124) internal successors, (1374), 1154 states have internal predecessors, (1374), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:41:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1420 transitions. [2025-03-17 13:41:44,147 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1420 transitions. Word has length 63 [2025-03-17 13:41:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:44,148 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1420 transitions. [2025-03-17 13:41:44,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1420 transitions. [2025-03-17 13:41:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:41:44,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:44,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:44,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 13:41:44,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:44,350 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 77648507, now seen corresponding path program 1 times [2025-03-17 13:41:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762209444] [2025-03-17 13:41:44,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:44,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:44,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:44,353 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:44,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:41:44,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:41:44,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:41:44,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:44,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:44,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:41:44,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:44,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:44,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:41:44,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:44,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:41:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:44,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:44,600 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762209444] [2025-03-17 13:41:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762209444] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251752629] [2025-03-17 13:41:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:41:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:44,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:41:44,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:44,601 INFO L87 Difference]: Start difference. First operand 1166 states and 1420 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:46,289 INFO L93 Difference]: Finished difference Result 1165 states and 1419 transitions. [2025-03-17 13:41:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:41:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:41:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:46,292 INFO L225 Difference]: With dead ends: 1165 [2025-03-17 13:41:46,292 INFO L226 Difference]: Without dead ends: 1165 [2025-03-17 13:41:46,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:41:46,293 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 1 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:46,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2643 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:41:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2025-03-17 13:41:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2025-03-17 13:41:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 773 states have (on average 1.7761966364812418) internal successors, (1373), 1153 states have internal predecessors, (1373), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:41:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1419 transitions. [2025-03-17 13:41:46,303 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1419 transitions. Word has length 63 [2025-03-17 13:41:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:46,303 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1419 transitions. [2025-03-17 13:41:46,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1419 transitions. [2025-03-17 13:41:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:41:46,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:46,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:46,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 13:41:46,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:46,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:46,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash -763479721, now seen corresponding path program 1 times [2025-03-17 13:41:46,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:46,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122245067] [2025-03-17 13:41:46,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:46,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:46,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:46,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:46,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:41:46,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:41:46,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:41:46,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:46,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:46,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:41:46,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:46,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:46,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:41:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:46,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:46,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122245067] [2025-03-17 13:41:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122245067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:46,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:41:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808182836] [2025-03-17 13:41:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:46,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:41:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:46,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:41:46,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:41:46,777 INFO L87 Difference]: Start difference. First operand 1165 states and 1419 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:48,911 INFO L93 Difference]: Finished difference Result 1177 states and 1434 transitions. [2025-03-17 13:41:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:41:48,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2025-03-17 13:41:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:48,914 INFO L225 Difference]: With dead ends: 1177 [2025-03-17 13:41:48,915 INFO L226 Difference]: Without dead ends: 1177 [2025-03-17 13:41:48,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:41:48,915 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 61 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3823 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:48,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 3823 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:41:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2025-03-17 13:41:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1171. [2025-03-17 13:41:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 778 states have (on average 1.7737789203084833) internal successors, (1380), 1158 states have internal predecessors, (1380), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (25), 9 states have call predecessors, (25), 22 states have call successors, (25) [2025-03-17 13:41:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1429 transitions. [2025-03-17 13:41:48,927 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1429 transitions. Word has length 71 [2025-03-17 13:41:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:48,927 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1429 transitions. [2025-03-17 13:41:48,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1429 transitions. [2025-03-17 13:41:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:41:48,927 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:48,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:48,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:41:49,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:49,128 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:49,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash -763479720, now seen corresponding path program 1 times [2025-03-17 13:41:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:49,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933887104] [2025-03-17 13:41:49,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:49,130 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:49,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:41:49,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:41:49,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:41:49,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:49,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:49,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:49,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:49,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:49,360 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933887104] [2025-03-17 13:41:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933887104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242800678] [2025-03-17 13:41:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:49,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:49,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:49,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:49,361 INFO L87 Difference]: Start difference. First operand 1171 states and 1429 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:49,395 INFO L93 Difference]: Finished difference Result 1168 states and 1423 transitions. [2025-03-17 13:41:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:49,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2025-03-17 13:41:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:49,401 INFO L225 Difference]: With dead ends: 1168 [2025-03-17 13:41:49,402 INFO L226 Difference]: Without dead ends: 1168 [2025-03-17 13:41:49,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:49,403 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 0 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:49,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2941 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:41:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2025-03-17 13:41:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2025-03-17 13:41:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 775 states have (on average 1.7754838709677419) internal successors, (1376), 1156 states have internal predecessors, (1376), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:41:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1423 transitions. [2025-03-17 13:41:49,421 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1423 transitions. Word has length 71 [2025-03-17 13:41:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:49,421 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1423 transitions. [2025-03-17 13:41:49,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1423 transitions. [2025-03-17 13:41:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:41:49,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:49,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:49,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-17 13:41:49,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:49,622 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:49,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -63213910, now seen corresponding path program 1 times [2025-03-17 13:41:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505167148] [2025-03-17 13:41:49,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:49,625 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:49,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:41:49,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 13:41:49,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:41:49,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:49,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:49,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:41:49,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:49,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:49,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505167148] [2025-03-17 13:41:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505167148] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:49,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:41:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:41:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478947245] [2025-03-17 13:41:49,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:49,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:41:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:49,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:41:49,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:41:49,908 INFO L87 Difference]: Start difference. First operand 1168 states and 1423 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:50,022 INFO L93 Difference]: Finished difference Result 1180 states and 1440 transitions. [2025-03-17 13:41:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:41:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2025-03-17 13:41:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:50,028 INFO L225 Difference]: With dead ends: 1180 [2025-03-17 13:41:50,028 INFO L226 Difference]: Without dead ends: 1180 [2025-03-17 13:41:50,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:41:50,028 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 7 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:50,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5873 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:41:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2025-03-17 13:41:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2025-03-17 13:41:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 784 states have (on average 1.774234693877551) internal successors, (1391), 1165 states have internal predecessors, (1391), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:41:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1438 transitions. [2025-03-17 13:41:50,044 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1438 transitions. Word has length 72 [2025-03-17 13:41:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:50,044 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1438 transitions. [2025-03-17 13:41:50,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1438 transitions. [2025-03-17 13:41:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:41:50,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:50,045 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:50,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 13:41:50,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:50,246 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:41:50,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash -221612521, now seen corresponding path program 2 times [2025-03-17 13:41:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123952027] [2025-03-17 13:41:50,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:41:50,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:50,249 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:50,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:41:50,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:42:14,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:42:14,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:42:14,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:42:14,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 13:42:14,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:42:14,112 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:42:14,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:42:14,126 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 [2025-03-17 13:42:14,240 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:42:14,240 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 [2025-03-17 13:42:14,266 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 [2025-03-17 13:42:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:42:14,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:42:14,351 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:42:14,351 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 [2025-03-17 13:42:14,360 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1216 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1216) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-03-17 13:42:14,361 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:42:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123952027] [2025-03-17 13:42:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123952027] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:42:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1909832421] [2025-03-17 13:42:14,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:42:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:42:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:42:14,364 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:42:14,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-17 13:42:14,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:42:15,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:42:15,371 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:42:15,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:42:15,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:42:15,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:42:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:15,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:42:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1909832421] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:42:15,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:42:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:42:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727784533] [2025-03-17 13:42:15,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:42:15,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:42:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:42:15,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:42:15,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-17 13:42:15,645 INFO L87 Difference]: Start difference. First operand 1178 states and 1438 transitions. Second operand has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2025-03-17 13:42:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:42:21,877 INFO L93 Difference]: Finished difference Result 1202 states and 1469 transitions. [2025-03-17 13:42:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 13:42:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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 75 [2025-03-17 13:42:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:42:21,880 INFO L225 Difference]: With dead ends: 1202 [2025-03-17 13:42:21,880 INFO L226 Difference]: Without dead ends: 1198 [2025-03-17 13:42:21,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-17 13:42:21,881 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 953 mSDsluCounter, 5816 mSDsCounter, 0 mSdLazyCounter, 6935 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 6963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:42:21,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 6315 Invalid, 6963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6935 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2025-03-17 13:42:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2025-03-17 13:42:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1186. [2025-03-17 13:42:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 793 states have (on average 1.7679697351828498) internal successors, (1402), 1173 states have internal predecessors, (1402), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:42:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1449 transitions. [2025-03-17 13:42:21,901 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1449 transitions. Word has length 75 [2025-03-17 13:42:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:42:21,901 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1449 transitions. [2025-03-17 13:42:21,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2025-03-17 13:42:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1449 transitions. [2025-03-17 13:42:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 13:42:21,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:42:21,901 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] [2025-03-17 13:42:21,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-03-17 13:42:22,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:42:22,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:22,305 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:42:22,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:42:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1573872328, now seen corresponding path program 1 times [2025-03-17 13:42:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:42:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353816400] [2025-03-17 13:42:22,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:42:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:42:22,308 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:42:22,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:42:22,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 13:42:22,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 13:42:22,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:42:22,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:42:22,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:42:22,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:42:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:22,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:42:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:42:23,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:42:23,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353816400] [2025-03-17 13:42:23,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353816400] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:42:23,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:42:23,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:42:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377167124] [2025-03-17 13:42:23,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:42:23,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:42:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:42:23,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:42:23,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:42:23,093 INFO L87 Difference]: Start difference. First operand 1186 states and 1449 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:42:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:42:24,229 INFO L93 Difference]: Finished difference Result 1210 states and 1488 transitions. [2025-03-17 13:42:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:42:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 81 [2025-03-17 13:42:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:42:24,232 INFO L225 Difference]: With dead ends: 1210 [2025-03-17 13:42:24,232 INFO L226 Difference]: Without dead ends: 1204 [2025-03-17 13:42:24,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:42:24,233 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 25 mSDsluCounter, 16623 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17605 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:42:24,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17605 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:42:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2025-03-17 13:42:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2025-03-17 13:42:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 811 states have (on average 1.7570900123304563) internal successors, (1425), 1191 states have internal predecessors, (1425), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:42:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1472 transitions. [2025-03-17 13:42:24,256 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1472 transitions. Word has length 81 [2025-03-17 13:42:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:42:24,256 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 1472 transitions. [2025-03-17 13:42:24,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:42:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1472 transitions. [2025-03-17 13:42:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-17 13:42:24,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:42:24,257 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] [2025-03-17 13:42:24,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 13:42:24,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:24,457 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:42:24,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:42:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash -374774920, now seen corresponding path program 2 times [2025-03-17 13:42:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:42:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144255331] [2025-03-17 13:42:24,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:42:24,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:42:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:42:24,460 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:42:24,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 13:42:24,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes.