./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.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 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:18:57,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:18:57,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:18:57,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:18:57,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:18:57,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:18:57,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:18:57,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:18:57,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:18:57,399 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:18:57,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:18:57,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:18:57,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:18:57,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:18:57,399 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:18:57,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:18:57,401 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:18:57,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:18:57,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:18:57,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:18:57,402 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:18:57,402 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:18:57,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:18:57,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:18:57,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:18:57,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:18:57,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:18:57,404 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 -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2025-03-04 09:18:57,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:18:57,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:18:57,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:18:57,632 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:18:57,632 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:18:57,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2025-03-04 09:18:58,802 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5853e8986/ef0ea3b9f4a643f8a0bc07377ab1c6a3/FLAG48e2f0fdc [2025-03-04 09:18:59,108 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:18:59,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2025-03-04 09:18:59,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5853e8986/ef0ea3b9f4a643f8a0bc07377ab1c6a3/FLAG48e2f0fdc [2025-03-04 09:18:59,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5853e8986/ef0ea3b9f4a643f8a0bc07377ab1c6a3 [2025-03-04 09:18:59,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:18:59,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:18:59,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:18:59,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:18:59,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:18:59,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:18:59" (1/1) ... [2025-03-04 09:18:59,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5280c718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:59, skipping insertion in model container [2025-03-04 09:18:59,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:18:59" (1/1) ... [2025-03-04 09:18:59,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:18:59,684 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,712 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,715 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,720 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,725 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,752 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,770 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,770 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,773 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,774 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,782 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,802 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,803 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,805 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,817 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,818 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,819 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,820 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,822 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,823 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,823 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,825 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,827 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:59,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:18:59,850 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) [2025-03-04 09:18:59,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e0687db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:59, skipping insertion in model container [2025-03-04 09:18:59,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:18:59,851 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:18:59,854 INFO L158 Benchmark]: Toolchain (without parser) took 493.22ms. Allocated memory is still 201.3MB. Free memory was 151.4MB in the beginning and 121.6MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:18:59,856 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:18:59,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.64ms. Allocated memory is still 201.3MB. Free memory was 151.4MB in the beginning and 121.6MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:18:59,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.64ms. Allocated memory is still 201.3MB. Free memory was 151.4MB in the beginning and 121.6MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. 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_BER_test10-3.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 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:19:01,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:19:01,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:19:01,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:19:01,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:19:01,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:19:01,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:19:01,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:19:01,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:19:01,634 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:19:01,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:19:01,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:19:01,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:19:01,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:19:01,635 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:19:01,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:19:01,635 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:19:01,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:19:01,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:19:01,637 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:19:01,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:19:01,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:19:01,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:19:01,638 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 -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2025-03-04 09:19:01,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:19:01,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:19:01,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:19:01,902 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:19:01,902 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:19:01,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2025-03-04 09:19:03,079 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000972ee2/0ef44895825f4bc29afebbb414b08a81/FLAG9c4c7ae15 [2025-03-04 09:19:03,329 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:19:03,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2025-03-04 09:19:03,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000972ee2/0ef44895825f4bc29afebbb414b08a81/FLAG9c4c7ae15 [2025-03-04 09:19:03,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000972ee2/0ef44895825f4bc29afebbb414b08a81 [2025-03-04 09:19:03,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:19:03,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:19:03,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:19:03,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:19:03,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:19:03,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:19:03" (1/1) ... [2025-03-04 09:19:03,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122dd89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:03, skipping insertion in model container [2025-03-04 09:19:03,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:19:03" (1/1) ... [2025-03-04 09:19:03,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:19:03,954 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:03,981 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:03,987 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:03,990 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:03,994 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,015 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,017 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,021 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,025 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,042 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,042 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,044 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,044 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,054 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,054 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,056 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,056 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,067 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,069 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,071 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,071 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,084 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,086 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,088 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,088 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,090 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,092 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,098 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,104 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,107 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:19:04,126 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:19:04,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:19:04,158 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,169 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,176 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,177 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,179 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,195 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,196 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,199 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,211 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,211 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,212 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,212 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,223 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,223 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,243 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,247 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,248 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,248 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,255 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,255 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,256 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,257 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,258 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,259 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,260 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,263 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,264 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,265 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:19:04,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:19:04,273 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:19:04,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:19:04,386 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:19:04,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04 WrapperNode [2025-03-04 09:19:04,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:19:04,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:19:04,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:19:04,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:19:04,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,497 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-03-04 09:19:04,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:19:04,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:19:04,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:19:04,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:19:04,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,652 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [466, 2, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 102 writes are split as follows [98, 0, 4]. [2025-03-04 09:19:04,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,719 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:19:04,752 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:19:04,752 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:19:04,753 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:19:04,754 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (1/1) ... [2025-03-04 09:19:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:19:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:04,785 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) [2025-03-04 09:19:04,788 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 [2025-03-04 09:19:04,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:19:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:19:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-04 09:19:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:19:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:19:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:19:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:19:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:19:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:19:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:19:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:19:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:19:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:19:05,061 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:19:05,062 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:19:10,522 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:19:10,680 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2025-03-04 09:19:10,681 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:19:10,718 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:19:10,718 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:19:10,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:19:10 BoogieIcfgContainer [2025-03-04 09:19:10,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:19:10,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:19:10,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:19:10,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:19:10,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:19:03" (1/3) ... [2025-03-04 09:19:10,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d54235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:19:10, skipping insertion in model container [2025-03-04 09:19:10,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:19:04" (2/3) ... [2025-03-04 09:19:10,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d54235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:19:10, skipping insertion in model container [2025-03-04 09:19:10,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:19:10" (3/3) ... [2025-03-04 09:19:10,731 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2025-03-04 09:19:10,742 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:19:10,743 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-3.i that has 6 procedures, 2451 locations, 1 initial locations, 87 loop locations, and 1189 error locations. [2025-03-04 09:19:10,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:19:10,812 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;@84d85b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:19:10,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-03-04 09:19:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-04 09:19:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:19:10,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:10,827 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:19:10,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:10,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2772423, now seen corresponding path program 1 times [2025-03-04 09:19:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993366696] [2025-03-04 09:19:10,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:10,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:10,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:10,840 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) [2025-03-04 09:19:10,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:19:11,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:19:11,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:19:11,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:11,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:11,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:19:11,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:11,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:19:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:11,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:11,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993366696] [2025-03-04 09:19:11,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993366696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:11,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:11,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:19:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047646862] [2025-03-04 09:19:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:11,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:19:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:11,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:19:11,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:11,081 INFO L87 Difference]: Start difference. First operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-03-04 09:19:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:13,910 INFO L93 Difference]: Finished difference Result 3272 states and 3472 transitions. [2025-03-04 09:19:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:19:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-04 09:19:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:13,939 INFO L225 Difference]: With dead ends: 3272 [2025-03-04 09:19:13,939 INFO L226 Difference]: Without dead ends: 3270 [2025-03-04 09:19:13,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:13,942 INFO L435 NwaCegarLoop]: 1660 mSDtfsCounter, 2305 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:13,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 2226 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:19:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2025-03-04 09:19:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2583. [2025-03-04 09:19:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1410 states have (on average 2.051063829787234) internal successors, (2892), 2567 states have internal predecessors, (2892), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-04 09:19:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2924 transitions. [2025-03-04 09:19:14,070 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2924 transitions. Word has length 3 [2025-03-04 09:19:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:14,070 INFO L471 AbstractCegarLoop]: Abstraction has 2583 states and 2924 transitions. [2025-03-04 09:19:14,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-03-04 09:19:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2924 transitions. [2025-03-04 09:19:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:19:14,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:14,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:19:14,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:19:14,271 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 [2025-03-04 09:19:14,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2772424, now seen corresponding path program 1 times [2025-03-04 09:19:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:14,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764033694] [2025-03-04 09:19:14,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:14,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:14,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:14,274 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) [2025-03-04 09:19:14,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:19:14,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:19:14,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:19:14,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:14,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:14,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:19:14,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:14,429 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 [2025-03-04 09:19:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:14,438 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:14,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764033694] [2025-03-04 09:19:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764033694] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:14,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:19:14,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044300157] [2025-03-04 09:19:14,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:14,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:19:14,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:14,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:19:14,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:14,439 INFO L87 Difference]: Start difference. First operand 2583 states and 2924 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-03-04 09:19:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:17,827 INFO L93 Difference]: Finished difference Result 3376 states and 3797 transitions. [2025-03-04 09:19:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:19:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-04 09:19:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:17,835 INFO L225 Difference]: With dead ends: 3376 [2025-03-04 09:19:17,836 INFO L226 Difference]: Without dead ends: 3376 [2025-03-04 09:19:17,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:17,836 INFO L435 NwaCegarLoop]: 2211 mSDtfsCounter, 867 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:17,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3599 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-04 09:19:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2025-03-04 09:19:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3048. [2025-03-04 09:19:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1873 states have (on average 2.006940736785905) internal successors, (3759), 3029 states have internal predecessors, (3759), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-04 09:19:17,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3797 transitions. [2025-03-04 09:19:17,883 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3797 transitions. Word has length 3 [2025-03-04 09:19:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:17,883 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 3797 transitions. [2025-03-04 09:19:17,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-03-04 09:19:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3797 transitions. [2025-03-04 09:19:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:19:17,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:17,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:17,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:19:18,084 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 [2025-03-04 09:19:18,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:18,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 674207459, now seen corresponding path program 1 times [2025-03-04 09:19:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:18,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902781116] [2025-03-04 09:19:18,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:18,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:18,087 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) [2025-03-04 09:19:18,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:19:18,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:19:18,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:19:18,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:18,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:18,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:19:18,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:18,251 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 [2025-03-04 09:19:18,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:19:18,308 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 [2025-03-04 09:19:18,320 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:19:18,320 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 [2025-03-04 09:19:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:18,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:18,328 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902781116] [2025-03-04 09:19:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902781116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662231028] [2025-03-04 09:19:18,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:18,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:18,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:18,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:18,329 INFO L87 Difference]: Start difference. First operand 3048 states and 3797 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:24,575 INFO L93 Difference]: Finished difference Result 5297 states and 6196 transitions. [2025-03-04 09:19:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-04 09:19:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:24,587 INFO L225 Difference]: With dead ends: 5297 [2025-03-04 09:19:24,587 INFO L226 Difference]: Without dead ends: 5297 [2025-03-04 09:19:24,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:24,588 INFO L435 NwaCegarLoop]: 1166 mSDtfsCounter, 2368 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:24,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 3351 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2025-03-04 09:19:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2025-03-04 09:19:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 3760. [2025-03-04 09:19:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2585 states have (on average 2.0336557059961313) internal successors, (5257), 3735 states have internal predecessors, (5257), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5307 transitions. [2025-03-04 09:19:24,640 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5307 transitions. Word has length 7 [2025-03-04 09:19:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:24,641 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 5307 transitions. [2025-03-04 09:19:24,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5307 transitions. [2025-03-04 09:19:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:19:24,641 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:24,641 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:24,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:19:24,841 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 [2025-03-04 09:19:24,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:24,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -574402570, now seen corresponding path program 1 times [2025-03-04 09:19:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530028649] [2025-03-04 09:19:24,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:24,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:24,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:24,845 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) [2025-03-04 09:19:24,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:19:24,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:19:24,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:19:24,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:24,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:24,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:19:24,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:24,991 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 [2025-03-04 09:19:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:24,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:24,998 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530028649] [2025-03-04 09:19:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530028649] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:24,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:19:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315114416] [2025-03-04 09:19:24,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:24,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:19:24,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:24,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:19:24,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:24,999 INFO L87 Difference]: Start difference. First operand 3760 states and 5307 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:27,102 INFO L93 Difference]: Finished difference Result 4464 states and 5969 transitions. [2025-03-04 09:19:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:19:27,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:19:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:27,113 INFO L225 Difference]: With dead ends: 4464 [2025-03-04 09:19:27,113 INFO L226 Difference]: Without dead ends: 4464 [2025-03-04 09:19:27,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:27,114 INFO L435 NwaCegarLoop]: 2389 mSDtfsCounter, 1906 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:27,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3149 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:19:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2025-03-04 09:19:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3668. [2025-03-04 09:19:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2585 states have (on average 1.9504835589941973) internal successors, (5042), 3643 states have internal predecessors, (5042), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5092 transitions. [2025-03-04 09:19:27,171 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5092 transitions. Word has length 8 [2025-03-04 09:19:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:27,171 INFO L471 AbstractCegarLoop]: Abstraction has 3668 states and 5092 transitions. [2025-03-04 09:19:27,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5092 transitions. [2025-03-04 09:19:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:19:27,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:27,172 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:27,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:19:27,372 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 [2025-03-04 09:19:27,372 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:27,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -574402569, now seen corresponding path program 1 times [2025-03-04 09:19:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283869952] [2025-03-04 09:19:27,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:27,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:27,375 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) [2025-03-04 09:19:27,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:19:27,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:19:27,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:19:27,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:27,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:27,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:19:27,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:27,512 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 [2025-03-04 09:19:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:27,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:27,531 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:27,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283869952] [2025-03-04 09:19:27,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283869952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:27,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:27,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:19:27,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037717327] [2025-03-04 09:19:27,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:27,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:19:27,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:27,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:19:27,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:27,532 INFO L87 Difference]: Start difference. First operand 3668 states and 5092 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:30,759 INFO L93 Difference]: Finished difference Result 5453 states and 7532 transitions. [2025-03-04 09:19:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:19:30,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:19:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:30,773 INFO L225 Difference]: With dead ends: 5453 [2025-03-04 09:19:30,774 INFO L226 Difference]: Without dead ends: 5453 [2025-03-04 09:19:30,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:19:30,775 INFO L435 NwaCegarLoop]: 2748 mSDtfsCounter, 1411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:30,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3938 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-04 09:19:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2025-03-04 09:19:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4008. [2025-03-04 09:19:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2935 states have (on average 1.9345826235093697) internal successors, (5678), 3983 states have internal predecessors, (5678), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5728 transitions. [2025-03-04 09:19:30,868 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5728 transitions. Word has length 8 [2025-03-04 09:19:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:30,870 INFO L471 AbstractCegarLoop]: Abstraction has 4008 states and 5728 transitions. [2025-03-04 09:19:30,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5728 transitions. [2025-03-04 09:19:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:19:30,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:30,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:30,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:31,071 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 [2025-03-04 09:19:31,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:31,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash 761747980, now seen corresponding path program 1 times [2025-03-04 09:19:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:31,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633753991] [2025-03-04 09:19:31,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:31,074 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) [2025-03-04 09:19:31,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:19:31,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:19:31,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:19:31,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:31,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:31,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:19:31,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:31,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:31,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633753991] [2025-03-04 09:19:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633753991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:31,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773186624] [2025-03-04 09:19:31,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:31,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:31,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:31,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:31,246 INFO L87 Difference]: Start difference. First operand 4008 states and 5728 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:34,140 INFO L93 Difference]: Finished difference Result 4643 states and 6221 transitions. [2025-03-04 09:19:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:34,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:19:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:34,150 INFO L225 Difference]: With dead ends: 4643 [2025-03-04 09:19:34,150 INFO L226 Difference]: Without dead ends: 4643 [2025-03-04 09:19:34,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:34,151 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 2268 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:34,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3540 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-04 09:19:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2025-03-04 09:19:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 3985. [2025-03-04 09:19:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 2935 states have (on average 1.918909710391823) internal successors, (5632), 3960 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5682 transitions. [2025-03-04 09:19:34,210 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5682 transitions. Word has length 10 [2025-03-04 09:19:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:34,210 INFO L471 AbstractCegarLoop]: Abstraction has 3985 states and 5682 transitions. [2025-03-04 09:19:34,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5682 transitions. [2025-03-04 09:19:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:19:34,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:34,210 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:34,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:19:34,415 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 [2025-03-04 09:19:34,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:34,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash 761747981, now seen corresponding path program 1 times [2025-03-04 09:19:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:34,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454752962] [2025-03-04 09:19:34,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:34,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:34,418 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) [2025-03-04 09:19:34,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:19:34,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:19:34,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:19:34,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:34,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:34,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:19:34,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:34,582 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 [2025-03-04 09:19:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:34,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:34,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454752962] [2025-03-04 09:19:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454752962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:34,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:34,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580332806] [2025-03-04 09:19:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:34,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:34,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:34,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:34,636 INFO L87 Difference]: Start difference. First operand 3985 states and 5682 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:38,176 INFO L93 Difference]: Finished difference Result 4726 states and 6495 transitions. [2025-03-04 09:19:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:38,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:19:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:38,185 INFO L225 Difference]: With dead ends: 4726 [2025-03-04 09:19:38,185 INFO L226 Difference]: Without dead ends: 4726 [2025-03-04 09:19:38,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:38,186 INFO L435 NwaCegarLoop]: 2116 mSDtfsCounter, 848 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:38,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4659 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 09:19:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2025-03-04 09:19:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4032. [2025-03-04 09:19:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 2982 states have (on average 1.90878604963112) internal successors, (5692), 4007 states have internal predecessors, (5692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5742 transitions. [2025-03-04 09:19:38,222 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5742 transitions. Word has length 10 [2025-03-04 09:19:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:38,223 INFO L471 AbstractCegarLoop]: Abstraction has 4032 states and 5742 transitions. [2025-03-04 09:19:38,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5742 transitions. [2025-03-04 09:19:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:19:38,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:38,223 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:38,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:38,423 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 [2025-03-04 09:19:38,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:38,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2139307635, now seen corresponding path program 1 times [2025-03-04 09:19:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626444269] [2025-03-04 09:19:38,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:38,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:38,426 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) [2025-03-04 09:19:38,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:19:38,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:19:38,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:19:38,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:38,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:38,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:19:38,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:38,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:38,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626444269] [2025-03-04 09:19:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626444269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:38,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:38,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:19:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018462544] [2025-03-04 09:19:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:38,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:38,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:38,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:38,584 INFO L87 Difference]: Start difference. First operand 4032 states and 5742 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:38,658 INFO L93 Difference]: Finished difference Result 3954 states and 5621 transitions. [2025-03-04 09:19:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:19:38,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:19:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:38,665 INFO L225 Difference]: With dead ends: 3954 [2025-03-04 09:19:38,665 INFO L226 Difference]: Without dead ends: 3954 [2025-03-04 09:19:38,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:38,666 INFO L435 NwaCegarLoop]: 2355 mSDtfsCounter, 45 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:38,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7042 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:19:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2025-03-04 09:19:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3948. [2025-03-04 09:19:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2917 states have (on average 1.9077819677751113) internal successors, (5565), 3923 states have internal predecessors, (5565), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5615 transitions. [2025-03-04 09:19:38,704 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5615 transitions. Word has length 11 [2025-03-04 09:19:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:38,704 INFO L471 AbstractCegarLoop]: Abstraction has 3948 states and 5615 transitions. [2025-03-04 09:19:38,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:19:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5615 transitions. [2025-03-04 09:19:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:19:38,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:38,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:38,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:19:38,906 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 [2025-03-04 09:19:38,907 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:38,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -737712107, now seen corresponding path program 1 times [2025-03-04 09:19:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777060409] [2025-03-04 09:19:38,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:38,909 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) [2025-03-04 09:19:38,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:19:39,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:19:39,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:19:39,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:39,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:39,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:19:39,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:39,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:39,108 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777060409] [2025-03-04 09:19:39,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777060409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:39,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:39,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455663308] [2025-03-04 09:19:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:39,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:39,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:39,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:39,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:39,109 INFO L87 Difference]: Start difference. First operand 3948 states and 5615 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:41,873 INFO L93 Difference]: Finished difference Result 4623 states and 6335 transitions. [2025-03-04 09:19:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:19:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:41,883 INFO L225 Difference]: With dead ends: 4623 [2025-03-04 09:19:41,883 INFO L226 Difference]: Without dead ends: 4623 [2025-03-04 09:19:41,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:41,884 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1871 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:41,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4618 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:19:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2025-03-04 09:19:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 3925. [2025-03-04 09:19:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 2917 states have (on average 1.8920123414466918) internal successors, (5519), 3900 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5569 transitions. [2025-03-04 09:19:41,916 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5569 transitions. Word has length 19 [2025-03-04 09:19:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 3925 states and 5569 transitions. [2025-03-04 09:19:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5569 transitions. [2025-03-04 09:19:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:19:41,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:41,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:41,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:42,117 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 [2025-03-04 09:19:42,118 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:42,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash -737712106, now seen corresponding path program 1 times [2025-03-04 09:19:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81160459] [2025-03-04 09:19:42,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:42,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:42,122 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) [2025-03-04 09:19:42,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:19:42,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:19:42,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:19:42,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:42,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:42,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:19:42,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:42,287 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 [2025-03-04 09:19:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:42,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:42,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81160459] [2025-03-04 09:19:42,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81160459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:42,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757332646] [2025-03-04 09:19:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:42,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:42,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:42,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:42,351 INFO L87 Difference]: Start difference. First operand 3925 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:46,285 INFO L93 Difference]: Finished difference Result 5406 states and 7375 transitions. [2025-03-04 09:19:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:46,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:19:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:46,295 INFO L225 Difference]: With dead ends: 5406 [2025-03-04 09:19:46,295 INFO L226 Difference]: Without dead ends: 5406 [2025-03-04 09:19:46,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:46,296 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1447 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:46,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5455 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-04 09:19:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2025-03-04 09:19:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4039. [2025-03-04 09:19:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4039 states, 3031 states have (on average 1.8663807324315407) internal successors, (5657), 4014 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 5707 transitions. [2025-03-04 09:19:46,337 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 5707 transitions. Word has length 19 [2025-03-04 09:19:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:46,338 INFO L471 AbstractCegarLoop]: Abstraction has 4039 states and 5707 transitions. [2025-03-04 09:19:46,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 5707 transitions. [2025-03-04 09:19:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:19:46,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:46,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:46,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:19:46,539 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 [2025-03-04 09:19:46,539 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:46,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash -756582698, now seen corresponding path program 1 times [2025-03-04 09:19:46,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:46,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398426352] [2025-03-04 09:19:46,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:46,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:46,543 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) [2025-03-04 09:19:46,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:19:46,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:19:46,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:19:46,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:46,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:46,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:19:46,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:46,711 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 [2025-03-04 09:19:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:46,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:46,737 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398426352] [2025-03-04 09:19:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398426352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:46,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88485304] [2025-03-04 09:19:46,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:46,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:46,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:46,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:46,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:46,738 INFO L87 Difference]: Start difference. First operand 4039 states and 5707 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:49,442 INFO L93 Difference]: Finished difference Result 4730 states and 6351 transitions. [2025-03-04 09:19:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:19:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:49,449 INFO L225 Difference]: With dead ends: 4730 [2025-03-04 09:19:49,449 INFO L226 Difference]: Without dead ends: 4730 [2025-03-04 09:19:49,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:49,449 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1846 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:49,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4618 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:19:49,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2025-03-04 09:19:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4016. [2025-03-04 09:19:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 3031 states have (on average 1.8208512042230287) internal successors, (5519), 3991 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5569 transitions. [2025-03-04 09:19:49,502 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5569 transitions. Word has length 19 [2025-03-04 09:19:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:49,502 INFO L471 AbstractCegarLoop]: Abstraction has 4016 states and 5569 transitions. [2025-03-04 09:19:49,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5569 transitions. [2025-03-04 09:19:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:19:49,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:49,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:49,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:49,703 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 [2025-03-04 09:19:49,704 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:49,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:49,704 INFO L85 PathProgramCache]: Analyzing trace with hash -756582697, now seen corresponding path program 1 times [2025-03-04 09:19:49,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134790246] [2025-03-04 09:19:49,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:49,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:49,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:49,706 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) [2025-03-04 09:19:49,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:19:49,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:19:49,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:19:49,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:49,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:49,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:19:49,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:49,862 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 [2025-03-04 09:19:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:49,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:19:49,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134790246] [2025-03-04 09:19:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134790246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:49,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:49,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:19:49,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699018603] [2025-03-04 09:19:49,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:49,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:19:49,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:49,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:19:49,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:19:49,924 INFO L87 Difference]: Start difference. First operand 4016 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:53,858 INFO L93 Difference]: Finished difference Result 5474 states and 7375 transitions. [2025-03-04 09:19:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:19:53,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:19:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:53,864 INFO L225 Difference]: With dead ends: 5474 [2025-03-04 09:19:53,864 INFO L226 Difference]: Without dead ends: 5474 [2025-03-04 09:19:53,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:19:53,865 INFO L435 NwaCegarLoop]: 2571 mSDtfsCounter, 1424 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:53,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5393 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-04 09:19:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-04 09:19:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 4130. [2025-03-04 09:19:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3145 states have (on average 1.7987281399046104) internal successors, (5657), 4105 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:19:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5707 transitions. [2025-03-04 09:19:53,902 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5707 transitions. Word has length 19 [2025-03-04 09:19:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:53,903 INFO L471 AbstractCegarLoop]: Abstraction has 4130 states and 5707 transitions. [2025-03-04 09:19:53,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-04 09:19:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5707 transitions. [2025-03-04 09:19:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:19:53,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:53,906 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:53,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:19:54,106 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 [2025-03-04 09:19:54,107 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:19:54,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2143448273, now seen corresponding path program 1 times [2025-03-04 09:19:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:19:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612867824] [2025-03-04 09:19:54,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:54,109 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) [2025-03-04 09:19:54,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:19:54,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:19:54,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:19:54,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:54,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:54,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:19:54,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:54,337 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 [2025-03-04 09:19:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:54,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:54,758 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:19:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612867824] [2025-03-04 09:19:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612867824] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:19:54,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:19:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152032104] [2025-03-04 09:19:54,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:54,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:19:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:19:54,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:19:54,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:19:54,760 INFO L87 Difference]: Start difference. First operand 4130 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:20:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:05,858 INFO L93 Difference]: Finished difference Result 5882 states and 7945 transitions. [2025-03-04 09:20:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:20:05,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 38 [2025-03-04 09:20:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:05,864 INFO L225 Difference]: With dead ends: 5882 [2025-03-04 09:20:05,864 INFO L226 Difference]: Without dead ends: 5882 [2025-03-04 09:20:05,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:20:05,865 INFO L435 NwaCegarLoop]: 2565 mSDtfsCounter, 2214 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 5621 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:05,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 8284 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5621 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2025-03-04 09:20:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-04 09:20:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 4294. [2025-03-04 09:20:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3309 states have (on average 1.7796917497733453) internal successors, (5889), 4269 states have internal predecessors, (5889), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:20:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 5939 transitions. [2025-03-04 09:20:05,944 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 5939 transitions. Word has length 38 [2025-03-04 09:20:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:05,944 INFO L471 AbstractCegarLoop]: Abstraction has 4294 states and 5939 transitions. [2025-03-04 09:20:05,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:20:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 5939 transitions. [2025-03-04 09:20:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:20:05,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:05,947 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:05,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:20:06,147 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 [2025-03-04 09:20:06,148 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:06,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1068678835, now seen corresponding path program 1 times [2025-03-04 09:20:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845472745] [2025-03-04 09:20:06,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:06,151 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) [2025-03-04 09:20:06,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:20:06,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:20:06,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:20:06,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:06,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:06,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:20:06,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:06,353 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 [2025-03-04 09:20:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:06,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:20:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:06,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845472745] [2025-03-04 09:20:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845472745] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:20:06,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:20:06,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:20:06,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265146343] [2025-03-04 09:20:06,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:20:06,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:20:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:06,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:20:06,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:20:06,777 INFO L87 Difference]: Start difference. First operand 4294 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:20:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:16,651 INFO L93 Difference]: Finished difference Result 6046 states and 8177 transitions. [2025-03-04 09:20:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:20:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 38 [2025-03-04 09:20:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:16,656 INFO L225 Difference]: With dead ends: 6046 [2025-03-04 09:20:16,657 INFO L226 Difference]: Without dead ends: 6046 [2025-03-04 09:20:16,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:20:16,657 INFO L435 NwaCegarLoop]: 2572 mSDtfsCounter, 2174 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 8289 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:16,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 8289 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2025-03-04 09:20:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2025-03-04 09:20:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 4458. [2025-03-04 09:20:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3473 states have (on average 1.7624532104808524) internal successors, (6121), 4433 states have internal predecessors, (6121), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:20:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6171 transitions. [2025-03-04 09:20:16,693 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6171 transitions. Word has length 38 [2025-03-04 09:20:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:16,693 INFO L471 AbstractCegarLoop]: Abstraction has 4458 states and 6171 transitions. [2025-03-04 09:20:16,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2025-03-04 09:20:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6171 transitions. [2025-03-04 09:20:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-04 09:20:16,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:16,694 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] [2025-03-04 09:20:16,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:20:16,895 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 [2025-03-04 09:20:16,895 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:16,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1642370794, now seen corresponding path program 1 times [2025-03-04 09:20:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:16,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355780807] [2025-03-04 09:20:16,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:16,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:16,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:16,898 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) [2025-03-04 09:20:16,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:20:17,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 09:20:17,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 09:20:17,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:17,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:17,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:20:17,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:17,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:17,166 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355780807] [2025-03-04 09:20:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355780807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:17,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:17,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:20:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127899433] [2025-03-04 09:20:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:17,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:20:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:17,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:20:17,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:20:17,167 INFO L87 Difference]: Start difference. First operand 4458 states and 6171 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-04 09:20:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:17,352 INFO L93 Difference]: Finished difference Result 6650 states and 8890 transitions. [2025-03-04 09:20:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:20:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2025-03-04 09:20:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:17,357 INFO L225 Difference]: With dead ends: 6650 [2025-03-04 09:20:17,357 INFO L226 Difference]: Without dead ends: 6650 [2025-03-04 09:20:17,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:20:17,358 INFO L435 NwaCegarLoop]: 2399 mSDtfsCounter, 1612 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:17,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 4627 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:20:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2025-03-04 09:20:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 5829. [2025-03-04 09:20:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4837 states have (on average 1.7436427537729997) internal successors, (8434), 5794 states have internal predecessors, (8434), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:20:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8504 transitions. [2025-03-04 09:20:17,402 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8504 transitions. Word has length 39 [2025-03-04 09:20:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:17,402 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 8504 transitions. [2025-03-04 09:20:17,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-04 09:20:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8504 transitions. [2025-03-04 09:20:17,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:20:17,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:17,403 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:17,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:20:17,607 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 [2025-03-04 09:20:17,607 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:17,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1867561523, now seen corresponding path program 1 times [2025-03-04 09:20:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485869385] [2025-03-04 09:20:17,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:17,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:17,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:17,610 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) [2025-03-04 09:20:17,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:20:17,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:20:17,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:20:17,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:17,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:17,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:20:17,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:17,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:17,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485869385] [2025-03-04 09:20:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485869385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:17,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862330678] [2025-03-04 09:20:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:17,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:20:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:17,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:20:17,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:17,834 INFO L87 Difference]: Start difference. First operand 5829 states and 8504 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:17,888 INFO L93 Difference]: Finished difference Result 5811 states and 8470 transitions. [2025-03-04 09:20:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:20:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-04 09:20:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:17,894 INFO L225 Difference]: With dead ends: 5811 [2025-03-04 09:20:17,894 INFO L226 Difference]: Without dead ends: 5811 [2025-03-04 09:20:17,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:17,896 INFO L435 NwaCegarLoop]: 2311 mSDtfsCounter, 27 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:17,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6896 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:20:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2025-03-04 09:20:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2025-03-04 09:20:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4819 states have (on average 1.7431002282631252) internal successors, (8400), 5776 states have internal predecessors, (8400), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:20:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 8470 transitions. [2025-03-04 09:20:17,963 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 8470 transitions. Word has length 50 [2025-03-04 09:20:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:17,963 INFO L471 AbstractCegarLoop]: Abstraction has 5811 states and 8470 transitions. [2025-03-04 09:20:17,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 8470 transitions. [2025-03-04 09:20:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:20:17,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:17,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:17,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 09:20:18,165 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 [2025-03-04 09:20:18,166 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:18,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1212270441, now seen corresponding path program 1 times [2025-03-04 09:20:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599369020] [2025-03-04 09:20:18,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:18,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:18,170 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) [2025-03-04 09:20:18,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:20:18,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:20:18,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:20:18,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:18,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:18,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:20:18,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:18,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:18,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599369020] [2025-03-04 09:20:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599369020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:18,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:20:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880299737] [2025-03-04 09:20:18,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:20:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:18,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:20:18,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:20:18,505 INFO L87 Difference]: Start difference. First operand 5811 states and 8470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:18,631 INFO L93 Difference]: Finished difference Result 8193 states and 11522 transitions. [2025-03-04 09:20:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:20:18,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-04 09:20:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:18,638 INFO L225 Difference]: With dead ends: 8193 [2025-03-04 09:20:18,638 INFO L226 Difference]: Without dead ends: 8193 [2025-03-04 09:20:18,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:20:18,639 INFO L435 NwaCegarLoop]: 2407 mSDtfsCounter, 1503 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:18,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:20:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2025-03-04 09:20:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 7379. [2025-03-04 09:20:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 6378 states have (on average 1.7253057384760113) internal successors, (11004), 7332 states have internal predecessors, (11004), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:20:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 11098 transitions. [2025-03-04 09:20:18,698 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 11098 transitions. Word has length 50 [2025-03-04 09:20:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:18,698 INFO L471 AbstractCegarLoop]: Abstraction has 7379 states and 11098 transitions. [2025-03-04 09:20:18,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 11098 transitions. [2025-03-04 09:20:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:20:18,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:18,699 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] [2025-03-04 09:20:18,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 09:20:18,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:18,903 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:18,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -871556419, now seen corresponding path program 1 times [2025-03-04 09:20:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167770003] [2025-03-04 09:20:18,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:18,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:18,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:18,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:20:18,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:20:19,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:20:19,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:20:19,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:19,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:19,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:20:19,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:19,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:19,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167770003] [2025-03-04 09:20:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167770003] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:19,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106269877] [2025-03-04 09:20:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:19,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:20:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:19,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:20:19,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:19,127 INFO L87 Difference]: Start difference. First operand 7379 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-03-04 09:20:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:19,196 INFO L93 Difference]: Finished difference Result 6780 states and 10226 transitions. [2025-03-04 09:20:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:20:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-03-04 09:20:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:19,203 INFO L225 Difference]: With dead ends: 6780 [2025-03-04 09:20:19,203 INFO L226 Difference]: Without dead ends: 6780 [2025-03-04 09:20:19,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:19,203 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 56 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:19,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6722 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:20:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2025-03-04 09:20:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6776. [2025-03-04 09:20:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 5798 states have (on average 1.7468092445670922) internal successors, (10128), 6729 states have internal predecessors, (10128), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:20:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 10222 transitions. [2025-03-04 09:20:19,246 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 10222 transitions. Word has length 53 [2025-03-04 09:20:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:19,246 INFO L471 AbstractCegarLoop]: Abstraction has 6776 states and 10222 transitions. [2025-03-04 09:20:19,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-03-04 09:20:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 10222 transitions. [2025-03-04 09:20:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:20:19,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:19,247 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] [2025-03-04 09:20:19,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:20:19,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:19,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:19,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1631739170, now seen corresponding path program 1 times [2025-03-04 09:20:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377268523] [2025-03-04 09:20:19,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:19,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:19,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:19,450 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) [2025-03-04 09:20:19,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:20:19,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:20:19,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:20:19,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:19,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:19,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:20:19,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:19,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:19,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377268523] [2025-03-04 09:20:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377268523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:19,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066503815] [2025-03-04 09:20:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:20:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:19,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:20:19,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:19,694 INFO L87 Difference]: Start difference. First operand 6776 states and 10222 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-03-04 09:20:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:19,752 INFO L93 Difference]: Finished difference Result 6158 states and 9218 transitions. [2025-03-04 09:20:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:20:19,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-03-04 09:20:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:19,758 INFO L225 Difference]: With dead ends: 6158 [2025-03-04 09:20:19,758 INFO L226 Difference]: Without dead ends: 6158 [2025-03-04 09:20:19,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:19,758 INFO L435 NwaCegarLoop]: 2230 mSDtfsCounter, 76 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:19,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:20:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2025-03-04 09:20:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6148. [2025-03-04 09:20:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5182 states have (on average 1.7587803936703976) internal successors, (9114), 6101 states have internal predecessors, (9114), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:20:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9208 transitions. [2025-03-04 09:20:19,816 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9208 transitions. Word has length 53 [2025-03-04 09:20:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:19,816 INFO L471 AbstractCegarLoop]: Abstraction has 6148 states and 9208 transitions. [2025-03-04 09:20:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-03-04 09:20:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9208 transitions. [2025-03-04 09:20:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:20:19,817 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:19,817 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:19,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:20:20,017 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 [2025-03-04 09:20:20,018 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:20,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1608287493, now seen corresponding path program 1 times [2025-03-04 09:20:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690930980] [2025-03-04 09:20:20,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:20,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:20,020 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) [2025-03-04 09:20:20,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:20:20,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:20:20,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:20:20,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:20,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:20,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:20:20,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:20,221 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:20:20,221 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:20:20,223 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 33 treesize of output 31 [2025-03-04 09:20:20,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:20:20,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-03-04 09:20:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:20,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:20,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:20,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690930980] [2025-03-04 09:20:20,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690930980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:20,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:20,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:20,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402478856] [2025-03-04 09:20:20,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:20,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:20:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:20,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:20:20,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:20,271 INFO L87 Difference]: Start difference. First operand 6148 states and 9208 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:20,936 INFO L93 Difference]: Finished difference Result 6996 states and 10212 transitions. [2025-03-04 09:20:20,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:20:20,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-04 09:20:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:20,960 INFO L225 Difference]: With dead ends: 6996 [2025-03-04 09:20:20,960 INFO L226 Difference]: Without dead ends: 6996 [2025-03-04 09:20:20,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:20,960 INFO L435 NwaCegarLoop]: 2350 mSDtfsCounter, 1687 mSDsluCounter, 3774 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 6124 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:20,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 6124 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 09:20:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2025-03-04 09:20:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6029. [2025-03-04 09:20:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 5064 states have (on average 1.7648104265402844) internal successors, (8937), 5983 states have internal predecessors, (8937), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:20:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9029 transitions. [2025-03-04 09:20:20,999 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9029 transitions. Word has length 58 [2025-03-04 09:20:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:20,999 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9029 transitions. [2025-03-04 09:20:20,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:20:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9029 transitions. [2025-03-04 09:20:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:20:21,000 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:21,000 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] [2025-03-04 09:20:21,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:20:21,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:21,200 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:21,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1118010507, now seen corresponding path program 1 times [2025-03-04 09:20:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716826745] [2025-03-04 09:20:21,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:21,203 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:20:21,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:20:21,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:20:21,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:20:21,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:21,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:21,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:20:21,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:21,458 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 [2025-03-04 09:20:21,461 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 [2025-03-04 09:20:21,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:20:21,745 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 [2025-03-04 09:20:21,752 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:20:21,752 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 [2025-03-04 09:20:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:21,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:21,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716826745] [2025-03-04 09:20:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716826745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:21,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:21,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:20:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740113872] [2025-03-04 09:20:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:21,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:20:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:21,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:20:21,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:21,760 INFO L87 Difference]: Start difference. First operand 6029 states and 9029 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-04 09:20:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:24,352 INFO L93 Difference]: Finished difference Result 5945 states and 8748 transitions. [2025-03-04 09:20:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:20:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2025-03-04 09:20:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:24,357 INFO L225 Difference]: With dead ends: 5945 [2025-03-04 09:20:24,358 INFO L226 Difference]: Without dead ends: 5945 [2025-03-04 09:20:24,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:20:24,358 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 1643 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:24,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1423 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-04 09:20:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2025-03-04 09:20:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5768. [2025-03-04 09:20:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4887 states have (on average 1.7037037037037037) internal successors, (8326), 5722 states have internal predecessors, (8326), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:20:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8418 transitions. [2025-03-04 09:20:24,400 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8418 transitions. Word has length 61 [2025-03-04 09:20:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:24,400 INFO L471 AbstractCegarLoop]: Abstraction has 5768 states and 8418 transitions. [2025-03-04 09:20:24,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-04 09:20:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8418 transitions. [2025-03-04 09:20:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:20:24,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:24,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:24,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 09:20:24,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:24,601 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:24,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash 444711809, now seen corresponding path program 1 times [2025-03-04 09:20:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:24,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119482447] [2025-03-04 09:20:24,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:24,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:24,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:24,605 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:20:24,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:20:24,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:20:24,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:20:24,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:24,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:24,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:20:24,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:24,854 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 [2025-03-04 09:20:24,863 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 [2025-03-04 09:20:24,881 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 [2025-03-04 09:20:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:24,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:24,888 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119482447] [2025-03-04 09:20:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119482447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:24,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323463976] [2025-03-04 09:20:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:24,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:20:24,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:24,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:20:24,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:24,889 INFO L87 Difference]: Start difference. First operand 5768 states and 8418 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:20:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:27,680 INFO L93 Difference]: Finished difference Result 5767 states and 8415 transitions. [2025-03-04 09:20:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:20:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2025-03-04 09:20:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:27,687 INFO L225 Difference]: With dead ends: 5767 [2025-03-04 09:20:27,687 INFO L226 Difference]: Without dead ends: 5767 [2025-03-04 09:20:27,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:20:27,688 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 2 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:27,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5748 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:20:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2025-03-04 09:20:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5767. [2025-03-04 09:20:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4887 states have (on average 1.7030898301616533) internal successors, (8323), 5721 states have internal predecessors, (8323), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:20:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8415 transitions. [2025-03-04 09:20:27,716 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8415 transitions. Word has length 66 [2025-03-04 09:20:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:27,717 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 8415 transitions. [2025-03-04 09:20:27,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:20:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8415 transitions. [2025-03-04 09:20:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:20:27,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:27,717 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:27,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-04 09:20:27,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:27,918 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:27,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 444711810, now seen corresponding path program 1 times [2025-03-04 09:20:27,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:27,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452752886] [2025-03-04 09:20:27,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:27,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:27,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:20:27,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:20:28,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:20:28,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:20:28,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:28,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:28,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:20:28,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:28,160 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 [2025-03-04 09:20:28,174 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 [2025-03-04 09:20:28,180 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 [2025-03-04 09:20:28,204 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 [2025-03-04 09:20:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:28,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:28,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452752886] [2025-03-04 09:20:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452752886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:28,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:28,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:28,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604420442] [2025-03-04 09:20:28,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:28,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:20:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:28,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:20:28,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:28,216 INFO L87 Difference]: Start difference. First operand 5767 states and 8415 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:20:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:20:32,191 INFO L93 Difference]: Finished difference Result 5766 states and 8412 transitions. [2025-03-04 09:20:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:20:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2025-03-04 09:20:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:20:32,197 INFO L225 Difference]: With dead ends: 5766 [2025-03-04 09:20:32,197 INFO L226 Difference]: Without dead ends: 5766 [2025-03-04 09:20:32,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:20:32,197 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 1 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:20:32,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5704 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-04 09:20:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2025-03-04 09:20:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5766. [2025-03-04 09:20:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 4884 states have (on average 1.7035217035217036) internal successors, (8320), 5720 states have internal predecessors, (8320), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:20:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8412 transitions. [2025-03-04 09:20:32,245 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8412 transitions. Word has length 66 [2025-03-04 09:20:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:20:32,245 INFO L471 AbstractCegarLoop]: Abstraction has 5766 states and 8412 transitions. [2025-03-04 09:20:32,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-04 09:20:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8412 transitions. [2025-03-04 09:20:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:20:32,246 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:20:32,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:20:32,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 09:20:32,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:32,446 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr774REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:20:32,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:20:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2100762435, now seen corresponding path program 1 times [2025-03-04 09:20:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:20:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460304942] [2025-03-04 09:20:32,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:20:32,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:20:32,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:20:32,449 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:20:32,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:20:32,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:20:32,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:20:32,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:20:32,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:20:32,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:20:32,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:20:32,685 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 [2025-03-04 09:20:32,699 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 [2025-03-04 09:20:32,713 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 [2025-03-04 09:20:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:20:32,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:20:32,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:20:32,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460304942] [2025-03-04 09:20:32,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460304942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:20:32,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:20:32,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:20:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927012626] [2025-03-04 09:20:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:20:32,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:20:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:20:32,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:20:32,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:20:32,721 INFO L87 Difference]: Start difference. First operand 5766 states and 8412 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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)