./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:44:24,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:44:24,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:44:24,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:44:24,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:44:24,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:44:24,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:44:24,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:44:24,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:44:24,461 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:44:24,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:44:24,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:44:24,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:44:24,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:44:24,462 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:44:24,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:44:24,462 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:44:24,463 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:44:24,464 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:44:24,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:44:24,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:44:24,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:44:24,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:24,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:44:24,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:44:24,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:44:24,465 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 -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2025-03-17 13:44:24,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:44:24,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:44:24,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:44:24,706 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:44:24,706 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:44:24,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2025-03-17 13:44:25,847 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188237899/ab556500bb8f4abf92993d18d7a56729/FLAG7b9c02dfd [2025-03-17 13:44:26,177 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:44:26,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2025-03-17 13:44:26,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188237899/ab556500bb8f4abf92993d18d7a56729/FLAG7b9c02dfd [2025-03-17 13:44:26,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188237899/ab556500bb8f4abf92993d18d7a56729 [2025-03-17 13:44:26,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:44:26,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:44:26,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:26,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:44:26,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:44:26,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:26" (1/1) ... [2025-03-17 13:44:26,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6af1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:26, skipping insertion in model container [2025-03-17 13:44:26,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:26" (1/1) ... [2025-03-17 13:44:26,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:26,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,803 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,805 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,807 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,811 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,835 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 13:44:26,840 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 13:44:26,843 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,846 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,876 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,878 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,881 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,882 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,883 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,886 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,886 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,889 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,891 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,891 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,892 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:26,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:26,920 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-17 13:44:26,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6784b424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:26, skipping insertion in model container [2025-03-17 13:44:26,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:26,921 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:44:26,922 INFO L158 Benchmark]: Toolchain (without parser) took 493.78ms. Allocated memory is still 142.6MB. Free memory was 109.9MB in the beginning and 86.2MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:44:26,923 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:44:26,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.19ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 86.2MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:44:26,924 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.19ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 86.2MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:44:28,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:44:28,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:44:28,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:44:28,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:44:28,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:44:28,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:44:28,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:44:28,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:44:28,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:44:28,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:44:28,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:44:28,633 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:44:28,634 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:28,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:44:28,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:44:28,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:44:28,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:44:28,635 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 -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2025-03-17 13:44:28,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:44:28,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:44:28,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:44:28,880 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:44:28,880 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:44:28,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2025-03-17 13:44:30,063 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6261fa7/8f51eb19645a4e0382461b4709bffaa2/FLAGfdb843894 [2025-03-17 13:44:30,322 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:44:30,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2025-03-17 13:44:30,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6261fa7/8f51eb19645a4e0382461b4709bffaa2/FLAGfdb843894 [2025-03-17 13:44:30,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6261fa7/8f51eb19645a4e0382461b4709bffaa2 [2025-03-17 13:44:30,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:44:30,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:44:30,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:30,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:44:30,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:44:30,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:30" (1/1) ... [2025-03-17 13:44:30,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1737498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:30, skipping insertion in model container [2025-03-17 13:44:30,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:44:30" (1/1) ... [2025-03-17 13:44:30,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:30,659 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,688 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,693 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,696 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,701 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,722 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,724 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,730 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,757 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,757 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,759 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,759 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,761 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,765 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,768 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,769 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,770 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,775 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,778 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,780 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:30,802 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:44:30,814 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:44:30,852 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,862 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,871 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,889 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,893 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,895 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,897 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,914 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,917 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,918 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,920 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,922 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,923 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,930 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,930 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,932 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:44:30,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:30,938 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:44:30,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:44:31,027 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:44:31,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31 WrapperNode [2025-03-17 13:44:31,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:44:31,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:44:31,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:44:31,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:44:31,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,128 INFO L138 Inliner]: procedures = 180, calls = 474, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1686 [2025-03-17 13:44:31,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:44:31,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:44:31,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:44:31,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:44:31,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,260 INFO L175 MemorySlicer]: Split 443 memory accesses to 3 slices as follows [2, 24, 417]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 99 writes are split as follows [0, 1, 98]. [2025-03-17 13:44:31,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,309 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:44:31,328 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:44:31,328 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:44:31,328 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:44:31,329 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (1/1) ... [2025-03-17 13:44:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:44:31,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:31,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:44:31,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:44:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:44:31,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:44:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:44:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:44:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:44:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:44:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:44:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:44:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:44:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:44:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:44:31,566 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:44:31,567 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:44:35,445 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#j~0#1.base, main_~#j~0#1.offset);havoc main_~#j~0#1.base, main_~#j~0#1.offset; [2025-03-17 13:44:35,542 INFO L? ?]: Removed 1905 outVars from TransFormulas that were not future-live. [2025-03-17 13:44:35,543 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:44:35,575 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:44:35,578 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:44:35,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:44:35 BoogieIcfgContainer [2025-03-17 13:44:35,579 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:44:35,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:44:35,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:44:35,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:44:35,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:44:30" (1/3) ... [2025-03-17 13:44:35,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00a56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:44:35, skipping insertion in model container [2025-03-17 13:44:35,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:44:31" (2/3) ... [2025-03-17 13:44:35,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00a56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:44:35, skipping insertion in model container [2025-03-17 13:44:35,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:44:35" (3/3) ... [2025-03-17 13:44:35,587 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-3.i [2025-03-17 13:44:35,596 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:44:35,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test5-3.i that has 6 procedures, 1820 locations, 1 initial locations, 55 loop locations, and 915 error locations. [2025-03-17 13:44:35,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:44:35,658 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;@10834592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:44:35,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 915 error locations. [2025-03-17 13:44:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 1810 states, 884 states have (on average 2.246606334841629) internal successors, (1986), 1800 states have internal predecessors, (1986), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:44:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:44:35,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:35,667 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:44:35,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr912REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:35,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash 63013790, now seen corresponding path program 1 times [2025-03-17 13:44:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:35,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813700582] [2025-03-17 13:44:35,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:35,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:35,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:44:35,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:44:35,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:44:35,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:35,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:35,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 13:44:35,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:35,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:35,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813700582] [2025-03-17 13:44:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813700582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085074108] [2025-03-17 13:44:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:35,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 13:44:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:35,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 13:44:35,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:44:35,870 INFO L87 Difference]: Start difference. First operand has 1810 states, 884 states have (on average 2.246606334841629) internal successors, (1986), 1800 states have internal predecessors, (1986), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:35,937 INFO L93 Difference]: Finished difference Result 1790 states and 1891 transitions. [2025-03-17 13:44:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 13:44:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:44:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:35,958 INFO L225 Difference]: With dead ends: 1790 [2025-03-17 13:44:35,958 INFO L226 Difference]: Without dead ends: 1788 [2025-03-17 13:44:35,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:44:35,964 INFO L435 NwaCegarLoop]: 1891 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:35,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:44:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2025-03-17 13:44:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1788. [2025-03-17 13:44:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 874 states have (on average 2.1338672768878717) internal successors, (1865), 1778 states have internal predecessors, (1865), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:44:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 1889 transitions. [2025-03-17 13:44:36,045 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 1889 transitions. Word has length 4 [2025-03-17 13:44:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:36,045 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 1889 transitions. [2025-03-17 13:44:36,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 1889 transitions. [2025-03-17 13:44:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:44:36,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:36,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:44:36,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 13:44:36,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:36,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr912REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:36,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 63013821, now seen corresponding path program 1 times [2025-03-17 13:44:36,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:36,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677860827] [2025-03-17 13:44:36,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:36,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:36,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:36,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:36,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:44:36,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:44:36,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:44:36,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:36,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:36,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:36,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:36,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:44:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:36,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:36,426 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677860827] [2025-03-17 13:44:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677860827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389750865] [2025-03-17 13:44:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:36,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:36,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:36,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:36,428 INFO L87 Difference]: Start difference. First operand 1788 states and 1889 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:38,324 INFO L93 Difference]: Finished difference Result 1919 states and 2052 transitions. [2025-03-17 13:44:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:44:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:38,332 INFO L225 Difference]: With dead ends: 1919 [2025-03-17 13:44:38,332 INFO L226 Difference]: Without dead ends: 1919 [2025-03-17 13:44:38,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:38,333 INFO L435 NwaCegarLoop]: 1351 mSDtfsCounter, 1253 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:38,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1720 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:44:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2025-03-17 13:44:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1696. [2025-03-17 13:44:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 874 states have (on average 2.028604118993135) internal successors, (1773), 1686 states have internal predecessors, (1773), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:44:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 1797 transitions. [2025-03-17 13:44:38,387 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 1797 transitions. Word has length 4 [2025-03-17 13:44:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:38,387 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 1797 transitions. [2025-03-17 13:44:38,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 1797 transitions. [2025-03-17 13:44:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:44:38,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:38,388 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:44:38,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 13:44:38,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:38,589 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr913REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:38,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash 63013822, now seen corresponding path program 1 times [2025-03-17 13:44:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:38,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102506487] [2025-03-17 13:44:38,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:38,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:38,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:44:38,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:44:38,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:44:38,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:38,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:38,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:44:38,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:38,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:38,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:38,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:38,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102506487] [2025-03-17 13:44:38,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102506487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:38,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:38,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:38,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832162852] [2025-03-17 13:44:38,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:38,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:38,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:38,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:38,731 INFO L87 Difference]: Start difference. First operand 1696 states and 1797 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:41,108 INFO L93 Difference]: Finished difference Result 2235 states and 2387 transitions. [2025-03-17 13:44:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:44:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:41,115 INFO L225 Difference]: With dead ends: 2235 [2025-03-17 13:44:41,115 INFO L226 Difference]: Without dead ends: 2235 [2025-03-17 13:44:41,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:41,118 INFO L435 NwaCegarLoop]: 1714 mSDtfsCounter, 759 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:41,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2511 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:44:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2025-03-17 13:44:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1861. [2025-03-17 13:44:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1049 states have (on average 1.9933269780743565) internal successors, (2091), 1851 states have internal predecessors, (2091), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:44:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2115 transitions. [2025-03-17 13:44:41,144 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2115 transitions. Word has length 4 [2025-03-17 13:44:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:41,144 INFO L471 AbstractCegarLoop]: Abstraction has 1861 states and 2115 transitions. [2025-03-17 13:44:41,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2115 transitions. [2025-03-17 13:44:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:44:41,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:41,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:44:41,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 13:44:41,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:41,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr292REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:41,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 61726894, now seen corresponding path program 1 times [2025-03-17 13:44:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:41,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088383680] [2025-03-17 13:44:41,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:41,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:41,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:44:41,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:44:41,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:44:41,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:41,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:41,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:41,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:41,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:44:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:41,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:41,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:41,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088383680] [2025-03-17 13:44:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088383680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:44:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350391628] [2025-03-17 13:44:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:41,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:41,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:41,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:41,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:41,470 INFO L87 Difference]: Start difference. First operand 1861 states and 2115 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:43,714 INFO L93 Difference]: Finished difference Result 3335 states and 3811 transitions. [2025-03-17 13:44:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:44:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:43,722 INFO L225 Difference]: With dead ends: 3335 [2025-03-17 13:44:43,722 INFO L226 Difference]: Without dead ends: 3335 [2025-03-17 13:44:43,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:43,723 INFO L435 NwaCegarLoop]: 1239 mSDtfsCounter, 1576 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:43,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 2050 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 13:44:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2025-03-17 13:44:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2382. [2025-03-17 13:44:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1571 states have (on average 1.9554423933800127) internal successors, (3072), 2368 states have internal predecessors, (3072), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3104 transitions. [2025-03-17 13:44:43,755 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3104 transitions. Word has length 4 [2025-03-17 13:44:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:43,755 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 3104 transitions. [2025-03-17 13:44:43,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3104 transitions. [2025-03-17 13:44:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:44:43,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:43,756 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:44:43,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 13:44:43,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:43,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr293REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:43,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 61726895, now seen corresponding path program 1 times [2025-03-17 13:44:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084178011] [2025-03-17 13:44:43,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:43,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:43,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:44:44,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:44:44,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:44:44,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:44,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:44,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 13:44:44,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:44,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:44,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:44,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084178011] [2025-03-17 13:44:44,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084178011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:44,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:44,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328313767] [2025-03-17 13:44:44,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:44,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:44,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:44,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:44,077 INFO L87 Difference]: Start difference. First operand 2382 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:44,182 INFO L93 Difference]: Finished difference Result 4026 states and 5142 transitions. [2025-03-17 13:44:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:44:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:44,198 INFO L225 Difference]: With dead ends: 4026 [2025-03-17 13:44:44,199 INFO L226 Difference]: Without dead ends: 4026 [2025-03-17 13:44:44,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:44,200 INFO L435 NwaCegarLoop]: 1781 mSDtfsCounter, 1347 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:44,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3556 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:44:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2025-03-17 13:44:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2384. [2025-03-17 13:44:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 1573 states have (on average 1.9535918626827717) internal successors, (3073), 2370 states have internal predecessors, (3073), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3105 transitions. [2025-03-17 13:44:44,256 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3105 transitions. Word has length 4 [2025-03-17 13:44:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:44,256 INFO L471 AbstractCegarLoop]: Abstraction has 2384 states and 3105 transitions. [2025-03-17 13:44:44,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3105 transitions. [2025-03-17 13:44:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:44:44,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:44,257 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:44,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:44:44,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:44,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr908REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:44,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1790838615, now seen corresponding path program 1 times [2025-03-17 13:44:44,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:44,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172273509] [2025-03-17 13:44:44,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:44,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:44,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:44,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:44:44,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:44:44,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:44:44,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:44,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:44,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:44,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:44,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:44,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:44,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172273509] [2025-03-17 13:44:44,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172273509] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:44,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:44,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:44:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503587753] [2025-03-17 13:44:44,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:44,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:44,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:44,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:44,598 INFO L87 Difference]: Start difference. First operand 2384 states and 3105 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:46,708 INFO L93 Difference]: Finished difference Result 2369 states and 3067 transitions. [2025-03-17 13:44:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:44:46,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:44:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:46,713 INFO L225 Difference]: With dead ends: 2369 [2025-03-17 13:44:46,713 INFO L226 Difference]: Without dead ends: 2369 [2025-03-17 13:44:46,713 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 13:44:46,714 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1304 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:46,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2074 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:44:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-03-17 13:44:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2361. [2025-03-17 13:44:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1573 states have (on average 1.9243483788938334) internal successors, (3027), 2347 states have internal predecessors, (3027), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3059 transitions. [2025-03-17 13:44:46,744 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3059 transitions. Word has length 9 [2025-03-17 13:44:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:46,744 INFO L471 AbstractCegarLoop]: Abstraction has 2361 states and 3059 transitions. [2025-03-17 13:44:46,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3059 transitions. [2025-03-17 13:44:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:44:46,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:46,745 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:44:46,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:44:46,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:46,946 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr909REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:46,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1790838616, now seen corresponding path program 1 times [2025-03-17 13:44:46,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:46,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926223316] [2025-03-17 13:44:46,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:46,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:46,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:46,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:44:46,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:44:47,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:44:47,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:44:47,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:47,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:47,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:44:47,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:47,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:47,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:47,140 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926223316] [2025-03-17 13:44:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926223316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:47,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:44:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025958337] [2025-03-17 13:44:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:47,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:44:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:47,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:44:47,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:44:47,141 INFO L87 Difference]: Start difference. First operand 2361 states and 3059 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:50,224 INFO L93 Difference]: Finished difference Result 2877 states and 3499 transitions. [2025-03-17 13:44:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:44:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:44:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:50,230 INFO L225 Difference]: With dead ends: 2877 [2025-03-17 13:44:50,230 INFO L226 Difference]: Without dead ends: 2877 [2025-03-17 13:44:50,231 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 13:44:50,231 INFO L435 NwaCegarLoop]: 1436 mSDtfsCounter, 882 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:50,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3099 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-17 13:44:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2025-03-17 13:44:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2475. [2025-03-17 13:44:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 1687 states have (on average 1.8761114404267931) internal successors, (3165), 2461 states have internal predecessors, (3165), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3197 transitions. [2025-03-17 13:44:50,265 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3197 transitions. Word has length 9 [2025-03-17 13:44:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:50,265 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 3197 transitions. [2025-03-17 13:44:50,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3197 transitions. [2025-03-17 13:44:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 13:44:50,267 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:50,267 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] [2025-03-17 13:44:50,278 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 13:44:50,471 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 13:44:50,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr909REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:50,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2059738945, now seen corresponding path program 1 times [2025-03-17 13:44:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:50,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098590224] [2025-03-17 13:44:50,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:50,473 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 13:44:50,475 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 13:44:50,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 13:44:50,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 13:44:50,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:50,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:50,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:44:50,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:50,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:44:50,783 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 13:44:50,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:44:51,091 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 13:44:51,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098590224] [2025-03-17 13:44:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098590224] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:44:51,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:44:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:44:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724891013] [2025-03-17 13:44:51,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:44:51,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:44:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:51,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:44:51,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:44:51,093 INFO L87 Difference]: Start difference. First operand 2475 states and 3197 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:59,121 INFO L93 Difference]: Finished difference Result 3285 states and 4069 transitions. [2025-03-17 13:44:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:44:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 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 28 [2025-03-17 13:44:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:59,129 INFO L225 Difference]: With dead ends: 3285 [2025-03-17 13:44:59,129 INFO L226 Difference]: Without dead ends: 3285 [2025-03-17 13:44:59,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 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 13:44:59,131 INFO L435 NwaCegarLoop]: 1437 mSDtfsCounter, 1616 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:59,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 4838 Invalid, 3889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2025-03-17 13:44:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2025-03-17 13:44:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 2639. [2025-03-17 13:44:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1851 states have (on average 1.8352242031334414) internal successors, (3397), 2625 states have internal predecessors, (3397), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3429 transitions. [2025-03-17 13:44:59,183 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3429 transitions. Word has length 28 [2025-03-17 13:44:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:59,183 INFO L471 AbstractCegarLoop]: Abstraction has 2639 states and 3429 transitions. [2025-03-17 13:44:59,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3429 transitions. [2025-03-17 13:44:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-17 13:44:59,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:59,184 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] [2025-03-17 13:44:59,194 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 13:44:59,385 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 13:44:59,385 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr856REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:44:59,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:44:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 628147997, now seen corresponding path program 1 times [2025-03-17 13:44:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:44:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176862677] [2025-03-17 13:44:59,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:44:59,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:44:59,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:44:59,387 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 13:44:59,388 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 13:44:59,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 13:44:59,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 13:44:59,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:44:59,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:44:59,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:44:59,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:44:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:44:59,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:44:59,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:44:59,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176862677] [2025-03-17 13:44:59,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176862677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:44:59,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:44:59,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:44:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395303203] [2025-03-17 13:44:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:44:59,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:44:59,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:44:59,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:44:59,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:59,656 INFO L87 Difference]: Start difference. First operand 2639 states and 3429 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:44:59,794 INFO L93 Difference]: Finished difference Result 3227 states and 4112 transitions. [2025-03-17 13:44:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:44:59,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2025-03-17 13:44:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:44:59,801 INFO L225 Difference]: With dead ends: 3227 [2025-03-17 13:44:59,801 INFO L226 Difference]: Without dead ends: 3227 [2025-03-17 13:44:59,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:44:59,801 INFO L435 NwaCegarLoop]: 1833 mSDtfsCounter, 439 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:44:59,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 3529 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:44:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2025-03-17 13:44:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2855. [2025-03-17 13:44:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2067 states have (on average 1.787131107885825) internal successors, (3694), 2841 states have internal predecessors, (3694), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:44:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3726 transitions. [2025-03-17 13:44:59,828 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3726 transitions. Word has length 40 [2025-03-17 13:44:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:44:59,828 INFO L471 AbstractCegarLoop]: Abstraction has 2855 states and 3726 transitions. [2025-03-17 13:44:59,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:44:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3726 transitions. [2025-03-17 13:44:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-17 13:44:59,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:44:59,829 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] [2025-03-17 13:44:59,838 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 13:45:00,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:00,029 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr827REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:00,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash -16059457, now seen corresponding path program 1 times [2025-03-17 13:45:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:00,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205649967] [2025-03-17 13:45:00,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:00,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:00,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:45:00,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 13:45:00,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 13:45:00,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:00,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:00,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:00,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:00,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:00,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205649967] [2025-03-17 13:45:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205649967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:00,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78334212] [2025-03-17 13:45:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:00,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:00,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:00,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:00,229 INFO L87 Difference]: Start difference. First operand 2855 states and 3726 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:00,301 INFO L93 Difference]: Finished difference Result 2400 states and 3072 transitions. [2025-03-17 13:45:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2025-03-17 13:45:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:00,309 INFO L225 Difference]: With dead ends: 2400 [2025-03-17 13:45:00,309 INFO L226 Difference]: Without dead ends: 2400 [2025-03-17 13:45:00,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:00,310 INFO L435 NwaCegarLoop]: 1702 mSDtfsCounter, 56 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:00,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 5033 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:45:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2025-03-17 13:45:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2397. [2025-03-17 13:45:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1632 states have (on average 1.860906862745098) internal successors, (3037), 2383 states have internal predecessors, (3037), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:45:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3069 transitions. [2025-03-17 13:45:00,351 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3069 transitions. Word has length 43 [2025-03-17 13:45:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:00,352 INFO L471 AbstractCegarLoop]: Abstraction has 2397 states and 3069 transitions. [2025-03-17 13:45:00,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3069 transitions. [2025-03-17 13:45:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-17 13:45:00,354 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:00,354 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] [2025-03-17 13:45:00,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 13:45:00,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:00,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr827REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:00,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 614822775, now seen corresponding path program 1 times [2025-03-17 13:45:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575603934] [2025-03-17 13:45:00,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:00,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:00,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:45:00,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-17 13:45:00,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-17 13:45:00,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:00,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:00,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:45:00,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:00,749 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 5 [2025-03-17 13:45:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:45:01,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:45:01,049 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:45:01,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:45:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:01,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:01,054 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575603934] [2025-03-17 13:45:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575603934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:01,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114808358] [2025-03-17 13:45:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:01,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:01,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:01,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:01,055 INFO L87 Difference]: Start difference. First operand 2397 states and 3069 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:02,934 INFO L93 Difference]: Finished difference Result 2313 states and 2949 transitions. [2025-03-17 13:45:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2025-03-17 13:45:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:02,938 INFO L225 Difference]: With dead ends: 2313 [2025-03-17 13:45:02,938 INFO L226 Difference]: Without dead ends: 2313 [2025-03-17 13:45:02,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:02,939 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 2279 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:02,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 1039 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:45:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2025-03-17 13:45:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1967. [2025-03-17 13:45:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1286 states have (on average 1.7612752721617417) internal successors, (2265), 1953 states have internal predecessors, (2265), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:45:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2297 transitions. [2025-03-17 13:45:02,957 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2297 transitions. Word has length 51 [2025-03-17 13:45:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:02,957 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 2297 transitions. [2025-03-17 13:45:02,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2297 transitions. [2025-03-17 13:45:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:45:02,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:02,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:02,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:45:03,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:03,160 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr820REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:03,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1709266289, now seen corresponding path program 1 times [2025-03-17 13:45:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373915136] [2025-03-17 13:45:03,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:03,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:03,164 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:03,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:45:03,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:45:03,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:45:03,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:03,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:03,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:45:03,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:03,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:45:03,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:45:03,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:45:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:03,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:03,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:03,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373915136] [2025-03-17 13:45:03,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373915136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:03,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:03,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:03,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968202999] [2025-03-17 13:45:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:03,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:03,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:03,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:03,406 INFO L87 Difference]: Start difference. First operand 1967 states and 2297 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:05,554 INFO L93 Difference]: Finished difference Result 1966 states and 2295 transitions. [2025-03-17 13:45:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:45:05,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-17 13:45:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:05,557 INFO L225 Difference]: With dead ends: 1966 [2025-03-17 13:45:05,557 INFO L226 Difference]: Without dead ends: 1966 [2025-03-17 13:45:05,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:45:05,558 INFO L435 NwaCegarLoop]: 1628 mSDtfsCounter, 2 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:05,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4182 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:45:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2025-03-17 13:45:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1966. [2025-03-17 13:45:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1286 states have (on average 1.7597200622083982) internal successors, (2263), 1952 states have internal predecessors, (2263), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:45:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2295 transitions. [2025-03-17 13:45:05,571 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2295 transitions. Word has length 56 [2025-03-17 13:45:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:05,572 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2295 transitions. [2025-03-17 13:45:05,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2295 transitions. [2025-03-17 13:45:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:45:05,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:05,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:05,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:45:05,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:05,773 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr821REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:05,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1709266290, now seen corresponding path program 1 times [2025-03-17 13:45:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081715778] [2025-03-17 13:45:05,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:05,776 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:05,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:45:05,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:45:05,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:45:05,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:05,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:05,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 13:45:05,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:05,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:45:05,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:45:05,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:45:06,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:45:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:06,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:06,034 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081715778] [2025-03-17 13:45:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081715778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445250150] [2025-03-17 13:45:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:06,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:45:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:06,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:45:06,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:06,035 INFO L87 Difference]: Start difference. First operand 1966 states and 2295 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:08,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:08,883 INFO L93 Difference]: Finished difference Result 1965 states and 2293 transitions. [2025-03-17 13:45:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:45:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-17 13:45:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:08,886 INFO L225 Difference]: With dead ends: 1965 [2025-03-17 13:45:08,886 INFO L226 Difference]: Without dead ends: 1965 [2025-03-17 13:45:08,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:45:08,887 INFO L435 NwaCegarLoop]: 1628 mSDtfsCounter, 1 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:08,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4228 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-17 13:45:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2025-03-17 13:45:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2025-03-17 13:45:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1284 states have (on average 1.7609034267912773) internal successors, (2261), 1951 states have internal predecessors, (2261), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:45:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2293 transitions. [2025-03-17 13:45:08,900 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2293 transitions. Word has length 56 [2025-03-17 13:45:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:08,900 INFO L471 AbstractCegarLoop]: Abstraction has 1965 states and 2293 transitions. [2025-03-17 13:45:08,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2293 transitions. [2025-03-17 13:45:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:45:08,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:08,901 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] [2025-03-17 13:45:08,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:09,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:09,101 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:09,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash 755857774, now seen corresponding path program 1 times [2025-03-17 13:45:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015322305] [2025-03-17 13:45:09,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:09,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:09,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:09,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:09,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:45:09,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:45:09,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:45:09,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:09,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:09,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:45:09,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:09,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:45:09,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:45:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:09,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:09,361 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015322305] [2025-03-17 13:45:09,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015322305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:09,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:09,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:45:09,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144631981] [2025-03-17 13:45:09,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:09,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:45:09,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:09,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:45:09,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:45:09,362 INFO L87 Difference]: Start difference. First operand 1965 states and 2293 transitions. Second operand has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 13:45:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:11,952 INFO L93 Difference]: Finished difference Result 1983 states and 2324 transitions. [2025-03-17 13:45:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:45:11,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2025-03-17 13:45:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:11,955 INFO L225 Difference]: With dead ends: 1983 [2025-03-17 13:45:11,956 INFO L226 Difference]: Without dead ends: 1983 [2025-03-17 13:45:11,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 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 13:45:11,956 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 13 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:11,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5889 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 13:45:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2025-03-17 13:45:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1974. [2025-03-17 13:45:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1292 states have (on average 1.758513931888545) internal successors, (2272), 1958 states have internal predecessors, (2272), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2025-03-17 13:45:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2314 transitions. [2025-03-17 13:45:11,972 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2314 transitions. Word has length 64 [2025-03-17 13:45:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:11,973 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2314 transitions. [2025-03-17 13:45:11,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 13:45:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2314 transitions. [2025-03-17 13:45:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:45:11,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:11,973 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] [2025-03-17 13:45:11,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:45:12,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:12,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:12,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash 755857775, now seen corresponding path program 1 times [2025-03-17 13:45:12,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:12,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377688335] [2025-03-17 13:45:12,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:12,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:12,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:12,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:45:12,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:45:12,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:45:12,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:12,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:12,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:12,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:12,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:12,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377688335] [2025-03-17 13:45:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377688335] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:12,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798810881] [2025-03-17 13:45:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:12,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:12,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:12,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:12,387 INFO L87 Difference]: Start difference. First operand 1974 states and 2314 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:45:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:12,432 INFO L93 Difference]: Finished difference Result 1968 states and 2298 transitions. [2025-03-17 13:45:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2025-03-17 13:45:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:12,436 INFO L225 Difference]: With dead ends: 1968 [2025-03-17 13:45:12,437 INFO L226 Difference]: Without dead ends: 1968 [2025-03-17 13:45:12,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 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 13:45:12,438 INFO L435 NwaCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:12,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4873 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2025-03-17 13:45:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1968. [2025-03-17 13:45:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1286 states have (on average 1.76049766718507) internal successors, (2264), 1954 states have internal predecessors, (2264), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:45:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2298 transitions. [2025-03-17 13:45:12,456 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2298 transitions. Word has length 64 [2025-03-17 13:45:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:12,457 INFO L471 AbstractCegarLoop]: Abstraction has 1968 states and 2298 transitions. [2025-03-17 13:45:12,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 13:45:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2298 transitions. [2025-03-17 13:45:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 13:45:12,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:12,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:12,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:45:12,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:12,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:12,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -881876191, now seen corresponding path program 1 times [2025-03-17 13:45:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207766727] [2025-03-17 13:45:12,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:12,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:12,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:12,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:45:12,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 13:45:12,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 13:45:12,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:12,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:12,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:45:12,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:12,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:12,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207766727] [2025-03-17 13:45:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207766727] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:12,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:45:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:45:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435550222] [2025-03-17 13:45:12,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:12,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:45:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:12,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:45:12,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:45:12,939 INFO L87 Difference]: Start difference. First operand 1968 states and 2298 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 13:45:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:13,034 INFO L93 Difference]: Finished difference Result 1980 states and 2316 transitions. [2025-03-17 13:45:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:45:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 65 [2025-03-17 13:45:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:13,037 INFO L225 Difference]: With dead ends: 1980 [2025-03-17 13:45:13,037 INFO L226 Difference]: Without dead ends: 1980 [2025-03-17 13:45:13,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:45:13,038 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 5 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:13,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6490 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:45:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2025-03-17 13:45:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1978. [2025-03-17 13:45:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1295 states have (on average 1.7598455598455598) internal successors, (2279), 1963 states have internal predecessors, (2279), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:45:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2313 transitions. [2025-03-17 13:45:13,071 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2313 transitions. Word has length 65 [2025-03-17 13:45:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:13,071 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2313 transitions. [2025-03-17 13:45:13,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 13:45:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2313 transitions. [2025-03-17 13:45:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:45:13,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:13,072 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] [2025-03-17 13:45:13,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:45:13,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:13,272 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:13,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash -920400338, now seen corresponding path program 2 times [2025-03-17 13:45:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:13,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083625905] [2025-03-17 13:45:13,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:45:13,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:13,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:13,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:13,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:45:13,414 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:45:22,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:45:22,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:45:22,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:22,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 13:45:22,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:22,784 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:45:22,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:45:22,793 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 13:45:22,916 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:45:22,916 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 13:45:22,939 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 13:45:22,950 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 13:45:22,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:23,004 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:45:23,004 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 13:45:23,014 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_955 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_955) |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 13:45:23,016 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083625905] [2025-03-17 13:45:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083625905] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:45:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417800177] [2025-03-17 13:45:23,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:45:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:45:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:45:23,020 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:45:23,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-03-17 13:45:23,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:45:23,895 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:45:23,895 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:45:23,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:23,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:45:23,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:24,016 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 13:45:24,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:24,164 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 13:45:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [417800177] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:24,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:45:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-17 13:45:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104104847] [2025-03-17 13:45:24,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:24,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 13:45:24,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:24,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 13:45:24,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-03-17 13:45:24,165 INFO L87 Difference]: Start difference. First operand 1978 states and 2313 transitions. Second operand has 23 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 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 13:45:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:32,521 INFO L93 Difference]: Finished difference Result 1994 states and 2337 transitions. [2025-03-17 13:45:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 13:45:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 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 68 [2025-03-17 13:45:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:32,524 INFO L225 Difference]: With dead ends: 1994 [2025-03-17 13:45:32,524 INFO L226 Difference]: Without dead ends: 1990 [2025-03-17 13:45:32,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=407, Invalid=2046, Unknown=1, NotChecked=96, Total=2550 [2025-03-17 13:45:32,525 INFO L435 NwaCegarLoop]: 1045 mSDtfsCounter, 1157 mSDsluCounter, 12710 mSDsCounter, 0 mSdLazyCounter, 9757 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 13755 SdHoareTripleChecker+Invalid, 9797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 9757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:32,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 13755 Invalid, 9797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 9757 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2025-03-17 13:45:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2025-03-17 13:45:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1986. [2025-03-17 13:45:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1304 states have (on average 1.7553680981595092) internal successors, (2289), 1971 states have internal predecessors, (2289), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:45:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2323 transitions. [2025-03-17 13:45:32,550 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2323 transitions. Word has length 68 [2025-03-17 13:45:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:32,550 INFO L471 AbstractCegarLoop]: Abstraction has 1986 states and 2323 transitions. [2025-03-17 13:45:32,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 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 13:45:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2323 transitions. [2025-03-17 13:45:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 13:45:32,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:32,552 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] [2025-03-17 13:45:32,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-03-17 13:45:32,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:32,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:32,953 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:32,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -723871409, now seen corresponding path program 1 times [2025-03-17 13:45:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481175775] [2025-03-17 13:45:32,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:32,955 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 13:45:33,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 13:45:33,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 13:45:33,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:33,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:33,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:45:33,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:33,273 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 13:45:33,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:33,614 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 13:45:33,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481175775] [2025-03-17 13:45:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481175775] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:33,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:45:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:45:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264483926] [2025-03-17 13:45:33,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:33,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:45:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:33,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:45:33,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:45:33,616 INFO L87 Difference]: Start difference. First operand 1986 states and 2323 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 13:45:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:34,723 INFO L93 Difference]: Finished difference Result 2010 states and 2362 transitions. [2025-03-17 13:45:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:45:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2025-03-17 13:45:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:34,726 INFO L225 Difference]: With dead ends: 2010 [2025-03-17 13:45:34,726 INFO L226 Difference]: Without dead ends: 2004 [2025-03-17 13:45:34,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:45:34,726 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 21 mSDsluCounter, 22690 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24316 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:34,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 24316 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:45:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2025-03-17 13:45:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 2004. [2025-03-17 13:45:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1322 states have (on average 1.7488653555219364) internal successors, (2312), 1989 states have internal predecessors, (2312), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:45:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2346 transitions. [2025-03-17 13:45:34,741 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2346 transitions. Word has length 74 [2025-03-17 13:45:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:34,741 INFO L471 AbstractCegarLoop]: Abstraction has 2004 states and 2346 transitions. [2025-03-17 13:45:34,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 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 13:45:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2346 transitions. [2025-03-17 13:45:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:45:34,741 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:34,741 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] [2025-03-17 13:45:34,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:45:34,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:34,942 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:45:34,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -820795505, now seen corresponding path program 2 times [2025-03-17 13:45:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944447471] [2025-03-17 13:45:34,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:45:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:34,945 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:45:34,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:45:35,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:45:54,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:45:54,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:45:54,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:54,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 13:45:54,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:54,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:45:54,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:45:54,338 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:45:54,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:45:54,351 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 13:45:54,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:45:54,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:45:54,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:45:54,684 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:45:54,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:45:54,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:45:54,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:45:54,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:45:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-17 13:45:54,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:55,039 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1539 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1538 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1539) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1538) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1539 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1539) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-03-17 13:45:55,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944447471] [2025-03-17 13:45:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944447471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:45:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [989101882] [2025-03-17 13:45:55,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:45:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:45:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:45:55,045 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:45:55,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-03-17 13:45:55,298 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:45:56,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:45:56,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:45:56,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:56,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 13:45:56,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:56,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:58,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [989101882] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:58,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:45:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26, 26] total 57 [2025-03-17 13:45:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044430259] [2025-03-17 13:45:58,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:58,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-17 13:45:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:58,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-17 13:45:58,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2728, Unknown=1, NotChecked=114, Total=3540 [2025-03-17 13:45:58,261 INFO L87 Difference]: Start difference. First operand 2004 states and 2346 transitions. Second operand has 57 states, 56 states have (on average 3.0714285714285716) internal successors, (172), 57 states have internal predecessors, (172), 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)