./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:52:55,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:52:55,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:52:55,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:52:55,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:52:55,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:52:55,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:52:55,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:52:55,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:52:55,300 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:52:55,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:52:55,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:52:55,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:52:55,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:52:55,302 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:52:55,303 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:52:55,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:52:55,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:52:55,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:52:55,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:52:55,305 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 -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2025-03-09 00:52:55,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:52:55,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:52:55,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:52:55,579 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:52:55,580 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:52:55,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-09 00:52:56,736 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de37ff73/89dea137f6d34aea8f0301f8e33efe1c/FLAG2efdfd235 [2025-03-09 00:52:57,132 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:52:57,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-09 00:52:57,156 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de37ff73/89dea137f6d34aea8f0301f8e33efe1c/FLAG2efdfd235 [2025-03-09 00:52:57,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de37ff73/89dea137f6d34aea8f0301f8e33efe1c [2025-03-09 00:52:57,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:52:57,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:52:57,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:57,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:52:57,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:52:57,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:57" (1/1) ... [2025-03-09 00:52:57,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef8b610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:57, skipping insertion in model container [2025-03-09 00:52:57,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:57" (1/1) ... [2025-03-09 00:52:57,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:52:57,734 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,751 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,758 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,763 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,788 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,789 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,803 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:57,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:52:57,827 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 00:52:57,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b51fdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:57, skipping insertion in model container [2025-03-09 00:52:57,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:57,829 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:52:57,831 INFO L158 Benchmark]: Toolchain (without parser) took 517.07ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 69.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:52:57,831 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:52:57,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.33ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 69.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:52:57,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.33ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 69.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2239]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:52:59,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:52:59,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:52:59,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:52:59,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:52:59,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:52:59,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:52:59,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:52:59,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:52:59,629 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:52:59,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:52:59,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:52:59,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:52:59,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:52:59,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:52:59,631 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:52:59,632 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:52:59,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:52:59,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:52:59,633 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:52:59,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:52:59,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:52:59,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:52:59,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:52:59,634 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 -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2025-03-09 00:52:59,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:52:59,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:52:59,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:52:59,884 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:52:59,884 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:52:59,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-09 00:53:01,071 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dea24bda/d907e9739d394f028ed0546b07c00fb9/FLAG881eefdaa [2025-03-09 00:53:01,393 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:53:01,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2025-03-09 00:53:01,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dea24bda/d907e9739d394f028ed0546b07c00fb9/FLAG881eefdaa [2025-03-09 00:53:01,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dea24bda/d907e9739d394f028ed0546b07c00fb9 [2025-03-09 00:53:01,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:53:01,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:53:01,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:53:01,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:53:01,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:53:01,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:53:01" (1/1) ... [2025-03-09 00:53:01,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb84372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:01, skipping insertion in model container [2025-03-09 00:53:01,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:53:01" (1/1) ... [2025-03-09 00:53:01,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:53:01,950 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:01,970 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:01,973 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:01,976 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:01,979 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,001 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,002 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,003 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,003 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,004 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,007 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,008 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,009 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,012 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,014 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:53:02,028 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:53:02,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:53:02,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,134 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,136 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,163 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,163 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,164 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,166 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,169 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:53:02,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:53:02,173 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:53:02,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:53:02,268 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:53:02,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02 WrapperNode [2025-03-09 00:53:02,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:53:02,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:53:02,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:53:02,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:53:02,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,384 INFO L138 Inliner]: procedures = 180, calls = 775, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3017 [2025-03-09 00:53:02,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:53:02,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:53:02,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:53:02,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:53:02,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,521 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-03-09 00:53:02,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,566 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:53:02,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:53:02,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:53:02,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:53:02,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (1/1) ... [2025-03-09 00:53:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:53:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:02,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:53:02,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:53:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-09 00:53:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:53:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:53:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:53:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:53:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:53:02,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:53:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:53:02,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:53:02,844 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:53:02,846 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:53:06,482 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:53:06,656 INFO L? ?]: Removed 1595 outVars from TransFormulas that were not future-live. [2025-03-09 00:53:06,656 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:53:06,701 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:53:06,701 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:53:06,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:53:06 BoogieIcfgContainer [2025-03-09 00:53:06,702 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:53:06,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:53:06,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:53:06,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:53:06,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:53:01" (1/3) ... [2025-03-09 00:53:06,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:53:06, skipping insertion in model container [2025-03-09 00:53:06,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:53:02" (2/3) ... [2025-03-09 00:53:06,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abfa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:53:06, skipping insertion in model container [2025-03-09 00:53:06,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:53:06" (3/3) ... [2025-03-09 00:53:06,711 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2025-03-09 00:53:06,721 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:53:06,722 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test9-2.i that has 6 procedures, 2076 locations, 1 initial locations, 36 loop locations, and 529 error locations. [2025-03-09 00:53:06,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:53:06,796 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;@55e95aba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:53:06,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-03-09 00:53:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 2066 states, 1031 states have (on average 2.1125121241513094) internal successors, (2178), 2059 states have internal predecessors, (2178), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2025-03-09 00:53:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:53:06,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:06,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:53:06,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:06,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:06,813 INFO L85 PathProgramCache]: Analyzing trace with hash 4188441, now seen corresponding path program 1 times [2025-03-09 00:53:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844680791] [2025-03-09 00:53:06,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:06,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:06,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:06,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:06,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:53:06,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:53:06,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:53:06,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:06,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:06,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:06,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:06,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:53:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:06,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:06,997 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844680791] [2025-03-09 00:53:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844680791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:06,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:53:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527643269] [2025-03-09 00:53:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:07,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:53:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:07,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:53:07,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:07,020 INFO L87 Difference]: Start difference. First operand has 2066 states, 1031 states have (on average 2.1125121241513094) internal successors, (2178), 2059 states have internal predecessors, (2178), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) 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) [2025-03-09 00:53:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:09,064 INFO L93 Difference]: Finished difference Result 2230 states and 3297 transitions. [2025-03-09 00:53:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:53:09,067 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 [2025-03-09 00:53:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:09,096 INFO L225 Difference]: With dead ends: 2230 [2025-03-09 00:53:09,096 INFO L226 Difference]: Without dead ends: 2228 [2025-03-09 00:53:09,097 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 [2025-03-09 00:53:09,101 INFO L435 NwaCegarLoop]: 2633 mSDtfsCounter, 1967 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:09,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 2787 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:53:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2025-03-09 00:53:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2050. [2025-03-09 00:53:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1033 states have (on average 2.032913843175218) internal successors, (2100), 2043 states have internal predecessors, (2100), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-03-09 00:53:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3108 transitions. [2025-03-09 00:53:09,465 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3108 transitions. Word has length 3 [2025-03-09 00:53:09,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:09,465 INFO L471 AbstractCegarLoop]: Abstraction has 2050 states and 3108 transitions. [2025-03-09 00:53:09,465 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) [2025-03-09 00:53:09,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3108 transitions. [2025-03-09 00:53:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:53:09,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:09,466 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:53:09,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:53:09,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:09,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:09,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 4188442, now seen corresponding path program 1 times [2025-03-09 00:53:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072780411] [2025-03-09 00:53:09,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:09,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:09,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:09,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:09,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:53:09,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:53:09,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:53:09,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:09,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:09,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:53:09,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:09,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:09,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:09,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:09,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072780411] [2025-03-09 00:53:09,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072780411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:09,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:09,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:53:09,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695604023] [2025-03-09 00:53:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:09,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:53:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:09,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:53:09,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:09,771 INFO L87 Difference]: Start difference. First operand 2050 states and 3108 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) [2025-03-09 00:53:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:12,133 INFO L93 Difference]: Finished difference Result 3463 states and 5554 transitions. [2025-03-09 00:53:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:53:12,134 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 [2025-03-09 00:53:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:12,147 INFO L225 Difference]: With dead ends: 3463 [2025-03-09 00:53:12,147 INFO L226 Difference]: Without dead ends: 3463 [2025-03-09 00:53:12,147 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 [2025-03-09 00:53:12,148 INFO L435 NwaCegarLoop]: 3008 mSDtfsCounter, 1445 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 5088 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:12,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 5088 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-09 00:53:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2025-03-09 00:53:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3176. [2025-03-09 00:53:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1660 states have (on average 2.008433734939759) internal successors, (3334), 3169 states have internal predecessors, (3334), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5342 transitions. [2025-03-09 00:53:12,370 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5342 transitions. Word has length 3 [2025-03-09 00:53:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:12,370 INFO L471 AbstractCegarLoop]: Abstraction has 3176 states and 5342 transitions. [2025-03-09 00:53:12,370 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) [2025-03-09 00:53:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5342 transitions. [2025-03-09 00:53:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 00:53:12,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:12,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:12,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:12,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:12,572 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:12,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1524560459, now seen corresponding path program 1 times [2025-03-09 00:53:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030799902] [2025-03-09 00:53:12,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:12,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:12,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:53:12,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:53:12,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:53:12,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:12,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:12,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:53:12,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:12,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:12,791 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-09 00:53:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-03-09 00:53:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:12,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:12,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030799902] [2025-03-09 00:53:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030799902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349250595] [2025-03-09 00:53:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:12,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:12,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:12,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:12,859 INFO L87 Difference]: Start difference. First operand 3176 states and 5342 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) [2025-03-09 00:53:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:21,094 INFO L93 Difference]: Finished difference Result 5160 states and 8300 transitions. [2025-03-09 00:53:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:21,095 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 [2025-03-09 00:53:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:21,113 INFO L225 Difference]: With dead ends: 5160 [2025-03-09 00:53:21,114 INFO L226 Difference]: Without dead ends: 5160 [2025-03-09 00:53:21,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:21,116 INFO L435 NwaCegarLoop]: 5023 mSDtfsCounter, 3183 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:21,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 8183 Invalid, 4572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2025-03-09 00:53:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2025-03-09 00:53:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 3322. [2025-03-09 00:53:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 1806 states have (on average 2.0033222591362128) internal successors, (3618), 3315 states have internal predecessors, (3618), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5626 transitions. [2025-03-09 00:53:21,387 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5626 transitions. Word has length 7 [2025-03-09 00:53:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:21,387 INFO L471 AbstractCegarLoop]: Abstraction has 3322 states and 5626 transitions. [2025-03-09 00:53:21,387 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) [2025-03-09 00:53:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5626 transitions. [2025-03-09 00:53:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:53:21,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:21,388 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:21,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:21,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:21,588 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:21,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:21,589 INFO L85 PathProgramCache]: Analyzing trace with hash -16729866, now seen corresponding path program 1 times [2025-03-09 00:53:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147377517] [2025-03-09 00:53:21,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:21,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:21,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:21,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:53:21,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:53:21,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:53:21,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:21,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:21,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:21,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:21,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:53:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:21,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:21,709 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147377517] [2025-03-09 00:53:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147377517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:21,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:53:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306879807] [2025-03-09 00:53:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:21,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:53:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:21,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:53:21,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:21,714 INFO L87 Difference]: Start difference. First operand 3322 states and 5626 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:23,405 INFO L93 Difference]: Finished difference Result 4490 states and 7805 transitions. [2025-03-09 00:53:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:53:23,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:53:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:23,420 INFO L225 Difference]: With dead ends: 4490 [2025-03-09 00:53:23,420 INFO L226 Difference]: Without dead ends: 4490 [2025-03-09 00:53:23,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:23,422 INFO L435 NwaCegarLoop]: 4807 mSDtfsCounter, 1760 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 7064 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:23,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 7064 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:53:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2025-03-09 00:53:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 3275. [2025-03-09 00:53:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 1806 states have (on average 1.9712070874861574) internal successors, (3560), 3268 states have internal predecessors, (3560), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5568 transitions. [2025-03-09 00:53:23,757 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5568 transitions. Word has length 8 [2025-03-09 00:53:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:23,757 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 5568 transitions. [2025-03-09 00:53:23,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5568 transitions. [2025-03-09 00:53:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:53:23,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:23,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:23,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:23,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:23,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:23,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash -16729865, now seen corresponding path program 1 times [2025-03-09 00:53:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236380420] [2025-03-09 00:53:23,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:23,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:23,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:53:24,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:53:24,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:53:24,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:24,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:24,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:53:24,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:24,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:24,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:24,096 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236380420] [2025-03-09 00:53:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236380420] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:53:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384380348] [2025-03-09 00:53:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:24,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:53:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:24,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:53:24,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:24,097 INFO L87 Difference]: Start difference. First operand 3275 states and 5568 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:26,192 INFO L93 Difference]: Finished difference Result 5701 states and 10116 transitions. [2025-03-09 00:53:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:53:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:53:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:26,212 INFO L225 Difference]: With dead ends: 5701 [2025-03-09 00:53:26,212 INFO L226 Difference]: Without dead ends: 5701 [2025-03-09 00:53:26,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:26,213 INFO L435 NwaCegarLoop]: 4954 mSDtfsCounter, 1512 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 7378 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:26,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 7378 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:53:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2025-03-09 00:53:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 3302. [2025-03-09 00:53:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 1843 states have (on average 1.9603906673901248) internal successors, (3613), 3295 states have internal predecessors, (3613), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 5621 transitions. [2025-03-09 00:53:26,531 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 5621 transitions. Word has length 8 [2025-03-09 00:53:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:26,531 INFO L471 AbstractCegarLoop]: Abstraction has 3302 states and 5621 transitions. [2025-03-09 00:53:26,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 5621 transitions. [2025-03-09 00:53:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:53:26,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:26,531 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:26,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:53:26,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:26,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:26,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash 524956055, now seen corresponding path program 1 times [2025-03-09 00:53:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742181232] [2025-03-09 00:53:26,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:26,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:26,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:26,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:53:26,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:53:26,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:53:26,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:26,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:26,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:26,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:26,874 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:26,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742181232] [2025-03-09 00:53:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742181232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47659979] [2025-03-09 00:53:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:53:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:26,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:53:26,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:26,876 INFO L87 Difference]: Start difference. First operand 3302 states and 5621 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-09 00:53:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:27,071 INFO L93 Difference]: Finished difference Result 4557 states and 7772 transitions. [2025-03-09 00:53:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:53:27,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2025-03-09 00:53:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:27,085 INFO L225 Difference]: With dead ends: 4557 [2025-03-09 00:53:27,085 INFO L226 Difference]: Without dead ends: 4557 [2025-03-09 00:53:27,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:53:27,086 INFO L435 NwaCegarLoop]: 3110 mSDtfsCounter, 1468 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:27,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 6067 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:53:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2025-03-09 00:53:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4288. [2025-03-09 00:53:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 2329 states have (on average 1.9600686990124516) internal successors, (4565), 4281 states have internal predecessors, (4565), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-09 00:53:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 7573 transitions. [2025-03-09 00:53:27,334 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 7573 transitions. Word has length 11 [2025-03-09 00:53:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:27,334 INFO L471 AbstractCegarLoop]: Abstraction has 4288 states and 7573 transitions. [2025-03-09 00:53:27,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-09 00:53:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 7573 transitions. [2025-03-09 00:53:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:53:27,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:27,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:27,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:53:27,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:27,539 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr196REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:27,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash -807016334, now seen corresponding path program 1 times [2025-03-09 00:53:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604669749] [2025-03-09 00:53:27,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:27,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:27,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:27,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:53:27,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:53:27,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:53:27,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:27,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:27,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:27,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:27,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:27,674 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:27,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604669749] [2025-03-09 00:53:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604669749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:27,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680727209] [2025-03-09 00:53:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:27,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:27,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:27,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:27,676 INFO L87 Difference]: Start difference. First operand 4288 states and 7573 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:30,541 INFO L93 Difference]: Finished difference Result 4455 states and 7703 transitions. [2025-03-09 00:53:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:53:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:30,552 INFO L225 Difference]: With dead ends: 4455 [2025-03-09 00:53:30,552 INFO L226 Difference]: Without dead ends: 4455 [2025-03-09 00:53:30,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:30,554 INFO L435 NwaCegarLoop]: 2589 mSDtfsCounter, 1965 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:30,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 4229 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-09 00:53:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2025-03-09 00:53:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4265. [2025-03-09 00:53:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4265 states, 2329 states have (on average 1.930442249892658) internal successors, (4496), 4258 states have internal predecessors, (4496), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-09 00:53:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4265 states to 4265 states and 7504 transitions. [2025-03-09 00:53:30,795 INFO L78 Accepts]: Start accepts. Automaton has 4265 states and 7504 transitions. Word has length 12 [2025-03-09 00:53:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:30,795 INFO L471 AbstractCegarLoop]: Abstraction has 4265 states and 7504 transitions. [2025-03-09 00:53:30,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4265 states and 7504 transitions. [2025-03-09 00:53:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:53:30,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:30,796 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:30,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:53:30,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:30,996 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr197REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:30,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -807016333, now seen corresponding path program 1 times [2025-03-09 00:53:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963116666] [2025-03-09 00:53:30,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:30,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:30,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:30,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:31,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:53:31,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:53:31,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:53:31,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:31,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:31,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:53:31,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:31,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:31,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:31,177 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963116666] [2025-03-09 00:53:31,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963116666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:31,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169297639] [2025-03-09 00:53:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:31,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:31,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:31,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:31,177 INFO L87 Difference]: Start difference. First operand 4265 states and 7504 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:34,827 INFO L93 Difference]: Finished difference Result 4459 states and 7673 transitions. [2025-03-09 00:53:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:34,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:53:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:34,843 INFO L225 Difference]: With dead ends: 4459 [2025-03-09 00:53:34,843 INFO L226 Difference]: Without dead ends: 4459 [2025-03-09 00:53:34,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:34,844 INFO L435 NwaCegarLoop]: 2895 mSDtfsCounter, 1338 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 6415 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:34,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 6415 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-09 00:53:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2025-03-09 00:53:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4246. [2025-03-09 00:53:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 2310 states have (on average 1.9281385281385282) internal successors, (4454), 4239 states have internal predecessors, (4454), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-09 00:53:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 7462 transitions. [2025-03-09 00:53:35,106 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 7462 transitions. Word has length 12 [2025-03-09 00:53:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:35,106 INFO L471 AbstractCegarLoop]: Abstraction has 4246 states and 7462 transitions. [2025-03-09 00:53:35,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 7462 transitions. [2025-03-09 00:53:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:53:35,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:35,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:35,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:53:35,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:35,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr173REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:35,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 752256225, now seen corresponding path program 1 times [2025-03-09 00:53:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691833397] [2025-03-09 00:53:35,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:35,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:35,311 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:35,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:53:35,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:53:35,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:53:35,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:35,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:35,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:35,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:35,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:35,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:35,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691833397] [2025-03-09 00:53:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691833397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:35,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:35,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87695392] [2025-03-09 00:53:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:35,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:35,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:35,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:35,419 INFO L87 Difference]: Start difference. First operand 4246 states and 7462 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:35,488 INFO L93 Difference]: Finished difference Result 4168 states and 7341 transitions. [2025-03-09 00:53:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:53:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 00:53:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:35,501 INFO L225 Difference]: With dead ends: 4168 [2025-03-09 00:53:35,501 INFO L226 Difference]: Without dead ends: 4168 [2025-03-09 00:53:35,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:35,501 INFO L435 NwaCegarLoop]: 2938 mSDtfsCounter, 45 mSDsluCounter, 5853 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8791 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:35,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8791 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:53:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2025-03-09 00:53:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2025-03-09 00:53:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 2251 states have (on average 1.9249222567747668) internal successors, (4333), 4161 states have internal predecessors, (4333), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-09 00:53:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 7341 transitions. [2025-03-09 00:53:35,756 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 7341 transitions. Word has length 13 [2025-03-09 00:53:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:35,756 INFO L471 AbstractCegarLoop]: Abstraction has 4168 states and 7341 transitions. [2025-03-09 00:53:35,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 7341 transitions. [2025-03-09 00:53:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:53:35,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:35,757 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:35,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:35,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:35,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:35,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1971563314, now seen corresponding path program 1 times [2025-03-09 00:53:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524903772] [2025-03-09 00:53:35,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:35,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:35,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:35,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:53:36,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:53:36,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:53:36,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:36,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:36,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:53:36,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:36,074 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:53:36,074 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:53:36,074 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:53:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-09 00:53:36,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:53:36,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-09 00:53:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:36,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:36,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524903772] [2025-03-09 00:53:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524903772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:36,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266447486] [2025-03-09 00:53:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:36,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:36,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:36,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:36,122 INFO L87 Difference]: Start difference. First operand 4168 states and 7341 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:37,350 INFO L93 Difference]: Finished difference Result 5887 states and 10055 transitions. [2025-03-09 00:53:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 00:53:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:37,366 INFO L225 Difference]: With dead ends: 5887 [2025-03-09 00:53:37,366 INFO L226 Difference]: Without dead ends: 5887 [2025-03-09 00:53:37,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:37,367 INFO L435 NwaCegarLoop]: 3265 mSDtfsCounter, 1878 mSDsluCounter, 5686 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 8951 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:37,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2381 Valid, 8951 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:53:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2025-03-09 00:53:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 3107. [2025-03-09 00:53:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 1690 states have (on average 1.929585798816568) internal successors, (3261), 3100 states have internal predecessors, (3261), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5269 transitions. [2025-03-09 00:53:37,705 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5269 transitions. Word has length 13 [2025-03-09 00:53:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:37,705 INFO L471 AbstractCegarLoop]: Abstraction has 3107 states and 5269 transitions. [2025-03-09 00:53:37,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5269 transitions. [2025-03-09 00:53:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-09 00:53:37,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:37,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:37,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:37,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:37,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:37,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -82635287, now seen corresponding path program 1 times [2025-03-09 00:53:37,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:37,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787541233] [2025-03-09 00:53:37,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:37,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:37,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:37,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:37,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:53:38,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 00:53:38,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 00:53:38,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:38,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:38,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:38,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:38,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:38,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787541233] [2025-03-09 00:53:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787541233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:38,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:38,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960174112] [2025-03-09 00:53:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:38,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:38,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:38,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:38,074 INFO L87 Difference]: Start difference. First operand 3107 states and 5269 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:40,800 INFO L93 Difference]: Finished difference Result 3092 states and 5231 transitions. [2025-03-09 00:53:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-09 00:53:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:40,806 INFO L225 Difference]: With dead ends: 3092 [2025-03-09 00:53:40,806 INFO L226 Difference]: Without dead ends: 3092 [2025-03-09 00:53:40,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:40,806 INFO L435 NwaCegarLoop]: 2583 mSDtfsCounter, 1727 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:40,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 4111 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:53:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2025-03-09 00:53:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3084. [2025-03-09 00:53:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 1690 states have (on average 1.9023668639053255) internal successors, (3215), 3077 states have internal predecessors, (3215), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 5223 transitions. [2025-03-09 00:53:41,022 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 5223 transitions. Word has length 17 [2025-03-09 00:53:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:41,022 INFO L471 AbstractCegarLoop]: Abstraction has 3084 states and 5223 transitions. [2025-03-09 00:53:41,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 5223 transitions. [2025-03-09 00:53:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-09 00:53:41,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:41,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:41,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:53:41,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:41,224 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:41,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -82635286, now seen corresponding path program 1 times [2025-03-09 00:53:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563612229] [2025-03-09 00:53:41,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:41,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:41,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:41,227 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:41,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:53:41,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 00:53:41,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 00:53:41,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:41,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:41,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:53:41,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:41,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:41,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:41,430 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563612229] [2025-03-09 00:53:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563612229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:41,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:53:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080447821] [2025-03-09 00:53:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:41,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:41,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:41,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:41,431 INFO L87 Difference]: Start difference. First operand 3084 states and 5223 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:45,036 INFO L93 Difference]: Finished difference Result 5479 states and 9639 transitions. [2025-03-09 00:53:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:45,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-09 00:53:45,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:45,045 INFO L225 Difference]: With dead ends: 5479 [2025-03-09 00:53:45,045 INFO L226 Difference]: Without dead ends: 5479 [2025-03-09 00:53:45,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:45,045 INFO L435 NwaCegarLoop]: 4893 mSDtfsCounter, 1550 mSDsluCounter, 5889 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 10782 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:45,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 10782 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-09 00:53:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2025-03-09 00:53:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 3198. [2025-03-09 00:53:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 1804 states have (on average 1.8586474501108647) internal successors, (3353), 3191 states have internal predecessors, (3353), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 5361 transitions. [2025-03-09 00:53:45,344 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 5361 transitions. Word has length 17 [2025-03-09 00:53:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:45,344 INFO L471 AbstractCegarLoop]: Abstraction has 3198 states and 5361 transitions. [2025-03-09 00:53:45,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 5361 transitions. [2025-03-09 00:53:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-09 00:53:45,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:45,346 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] [2025-03-09 00:53:45,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:53:45,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:45,546 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:45,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2020213196, now seen corresponding path program 1 times [2025-03-09 00:53:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111002013] [2025-03-09 00:53:45,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:45,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:45,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:45,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:53:45,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-09 00:53:45,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-09 00:53:45,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:45,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:45,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:53:45,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:45,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:45,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:53:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:46,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111002013] [2025-03-09 00:53:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111002013] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:53:46,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:53:46,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:53:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907348898] [2025-03-09 00:53:46,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:53:46,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:53:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:46,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:53:46,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:53:46,236 INFO L87 Difference]: Start difference. First operand 3198 states and 5361 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:58,094 INFO L93 Difference]: Finished difference Result 5835 states and 10129 transitions. [2025-03-09 00:53:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:53:58,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 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 36 [2025-03-09 00:53:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:58,103 INFO L225 Difference]: With dead ends: 5835 [2025-03-09 00:53:58,103 INFO L226 Difference]: Without dead ends: 5835 [2025-03-09 00:53:58,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:53:58,104 INFO L435 NwaCegarLoop]: 4921 mSDtfsCounter, 2311 mSDsluCounter, 11862 mSDsCounter, 0 mSdLazyCounter, 5215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 16783 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:58,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 16783 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5215 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2025-03-09 00:53:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2025-03-09 00:53:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 3362. [2025-03-09 00:53:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 1968 states have (on average 1.8216463414634145) internal successors, (3585), 3355 states have internal predecessors, (3585), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 5593 transitions. [2025-03-09 00:53:58,392 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 5593 transitions. Word has length 36 [2025-03-09 00:53:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:58,392 INFO L471 AbstractCegarLoop]: Abstraction has 3362 states and 5593 transitions. [2025-03-09 00:53:58,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 5593 transitions. [2025-03-09 00:53:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-09 00:53:58,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:58,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:58,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:58,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:58,593 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:58,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1945996175, now seen corresponding path program 1 times [2025-03-09 00:53:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:58,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027068916] [2025-03-09 00:53:58,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:58,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:58,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:58,598 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:58,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:53:58,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-09 00:53:58,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-09 00:53:58,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:58,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:58,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:58,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:58,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:58,791 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027068916] [2025-03-09 00:53:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027068916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:58,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41740280] [2025-03-09 00:53:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:58,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:58,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:58,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:58,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:58,792 INFO L87 Difference]: Start difference. First operand 3362 states and 5593 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:58,857 INFO L93 Difference]: Finished difference Result 3051 states and 5157 transitions. [2025-03-09 00:53:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:53:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-09 00:53:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:58,862 INFO L225 Difference]: With dead ends: 3051 [2025-03-09 00:53:58,862 INFO L226 Difference]: Without dead ends: 3051 [2025-03-09 00:53:58,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:58,863 INFO L435 NwaCegarLoop]: 2875 mSDtfsCounter, 56 mSDsluCounter, 5677 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8552 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:58,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8552 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:53:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2025-03-09 00:53:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3049. [2025-03-09 00:53:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 1678 states have (on average 1.8754469606674613) internal successors, (3147), 3042 states have internal predecessors, (3147), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:53:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 5155 transitions. [2025-03-09 00:53:59,016 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 5155 transitions. Word has length 51 [2025-03-09 00:53:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:59,016 INFO L471 AbstractCegarLoop]: Abstraction has 3049 states and 5155 transitions. [2025-03-09 00:53:59,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 5155 transitions. [2025-03-09 00:53:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-09 00:53:59,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:59,017 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] [2025-03-09 00:53:59,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:53:59,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:59,218 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:53:59,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -50699095, now seen corresponding path program 1 times [2025-03-09 00:53:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59167859] [2025-03-09 00:53:59,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:59,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:59,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:59,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:59,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:53:59,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-09 00:53:59,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 00:53:59,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:59,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:59,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:53:59,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:59,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:53:59,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:53:59,719 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:53:59,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:53:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:59,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:59,726 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59167859] [2025-03-09 00:53:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59167859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:59,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:59,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883575063] [2025-03-09 00:53:59,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:59,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:53:59,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:59,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:53:59,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:59,728 INFO L87 Difference]: Start difference. First operand 3049 states and 5155 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:03,148 INFO L93 Difference]: Finished difference Result 3011 states and 5117 transitions. [2025-03-09 00:54:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:54:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-03-09 00:54:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:03,152 INFO L225 Difference]: With dead ends: 3011 [2025-03-09 00:54:03,152 INFO L226 Difference]: Without dead ends: 3011 [2025-03-09 00:54:03,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:54:03,152 INFO L435 NwaCegarLoop]: 2452 mSDtfsCounter, 1619 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:03,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2122 Valid, 3926 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3199 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-09 00:54:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2025-03-09 00:54:03,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2974. [2025-03-09 00:54:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 1641 states have (on average 1.8494820231566118) internal successors, (3035), 2967 states have internal predecessors, (3035), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:54:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 5043 transitions. [2025-03-09 00:54:03,287 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 5043 transitions. Word has length 59 [2025-03-09 00:54:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:03,287 INFO L471 AbstractCegarLoop]: Abstraction has 2974 states and 5043 transitions. [2025-03-09 00:54:03,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 5043 transitions. [2025-03-09 00:54:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-09 00:54:03,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:03,288 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:03,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:54:03,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:03,489 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:03,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1316351324, now seen corresponding path program 1 times [2025-03-09 00:54:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50910224] [2025-03-09 00:54:03,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:54:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:03,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:03,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:54:03,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-09 00:54:03,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 00:54:03,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:54:03,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:54:03,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:54:03,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:54:03,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:54:03,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:54:03,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:54:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:03,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:54:03,723 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:54:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50910224] [2025-03-09 00:54:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50910224] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:54:03,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:54:03,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:54:03,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565296891] [2025-03-09 00:54:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:54:03,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:54:03,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:54:03,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:54:03,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:54:03,723 INFO L87 Difference]: Start difference. First operand 2974 states and 5043 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:04,972 INFO L93 Difference]: Finished difference Result 2973 states and 5042 transitions. [2025-03-09 00:54:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:54:04,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2025-03-09 00:54:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:04,981 INFO L225 Difference]: With dead ends: 2973 [2025-03-09 00:54:04,981 INFO L226 Difference]: Without dead ends: 2973 [2025-03-09 00:54:04,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:54:04,982 INFO L435 NwaCegarLoop]: 2847 mSDtfsCounter, 2 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10212 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:04,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10212 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:54:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2025-03-09 00:54:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2973. [2025-03-09 00:54:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 1641 states have (on average 1.8488726386349787) internal successors, (3034), 2966 states have internal predecessors, (3034), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:54:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 5042 transitions. [2025-03-09 00:54:05,133 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 5042 transitions. Word has length 64 [2025-03-09 00:54:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:05,133 INFO L471 AbstractCegarLoop]: Abstraction has 2973 states and 5042 transitions. [2025-03-09 00:54:05,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 5042 transitions. [2025-03-09 00:54:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-09 00:54:05,134 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:05,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:05,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:54:05,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:05,335 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:05,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1316351323, now seen corresponding path program 1 times [2025-03-09 00:54:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740457646] [2025-03-09 00:54:05,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:54:05,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:05,338 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:05,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:54:05,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-09 00:54:05,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 00:54:05,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:54:05,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:54:05,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:54:05,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:54:05,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:54:05,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:54:05,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:54:05,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:54:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:05,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:54:05,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:54:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740457646] [2025-03-09 00:54:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740457646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:54:05,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:54:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:54:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078041461] [2025-03-09 00:54:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:54:05,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:54:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:54:05,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:54:05,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:54:05,606 INFO L87 Difference]: Start difference. First operand 2973 states and 5042 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:07,239 INFO L93 Difference]: Finished difference Result 2972 states and 5041 transitions. [2025-03-09 00:54:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:54:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2025-03-09 00:54:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:07,244 INFO L225 Difference]: With dead ends: 2972 [2025-03-09 00:54:07,244 INFO L226 Difference]: Without dead ends: 2972 [2025-03-09 00:54:07,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:54:07,246 INFO L435 NwaCegarLoop]: 2847 mSDtfsCounter, 1 mSDsluCounter, 7352 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10199 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:07,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10199 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:54:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2025-03-09 00:54:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2972. [2025-03-09 00:54:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 1640 states have (on average 1.849390243902439) internal successors, (3033), 2965 states have internal predecessors, (3033), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-09 00:54:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5041 transitions. [2025-03-09 00:54:07,390 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5041 transitions. Word has length 64 [2025-03-09 00:54:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:07,390 INFO L471 AbstractCegarLoop]: Abstraction has 2972 states and 5041 transitions. [2025-03-09 00:54:07,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:54:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5041 transitions. [2025-03-09 00:54:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:54:07,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:07,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:07,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:54:07,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:07,591 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:07,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -645212767, now seen corresponding path program 1 times [2025-03-09 00:54:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563196161] [2025-03-09 00:54:07,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:54:07,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:07,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:07,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:54:07,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:54:07,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:54:07,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:54:07,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:54:07,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:54:07,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:54:07,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:54:07,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:54:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:07,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:54:07,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:54:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563196161] [2025-03-09 00:54:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563196161] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:54:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:54:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:54:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937133824] [2025-03-09 00:54:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:54:07,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:54:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:54:07,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:54:07,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:54:07,885 INFO L87 Difference]: Start difference. First operand 2972 states and 5041 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:54:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:13,094 INFO L93 Difference]: Finished difference Result 2984 states and 5056 transitions. [2025-03-09 00:54:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:54:13,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-09 00:54:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:13,100 INFO L225 Difference]: With dead ends: 2984 [2025-03-09 00:54:13,100 INFO L226 Difference]: Without dead ends: 2984 [2025-03-09 00:54:13,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:54:13,100 INFO L435 NwaCegarLoop]: 2832 mSDtfsCounter, 13 mSDsluCounter, 9180 mSDsCounter, 0 mSdLazyCounter, 4572 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12012 SdHoareTripleChecker+Invalid, 5077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 4572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:13,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12012 Invalid, 5077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 4572 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2025-03-09 00:54:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2025-03-09 00:54:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2978. [2025-03-09 00:54:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 1645 states have (on average 1.8480243161094225) internal successors, (3040), 2970 states have internal predecessors, (3040), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1003 states have call successors, (1006) [2025-03-09 00:54:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 5051 transitions. [2025-03-09 00:54:13,256 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 5051 transitions. Word has length 72 [2025-03-09 00:54:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:13,256 INFO L471 AbstractCegarLoop]: Abstraction has 2978 states and 5051 transitions. [2025-03-09 00:54:13,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:54:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 5051 transitions. [2025-03-09 00:54:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:54:13,256 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:13,256 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:13,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-09 00:54:13,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:13,458 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:13,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -645212766, now seen corresponding path program 1 times [2025-03-09 00:54:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:13,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764742711] [2025-03-09 00:54:13,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:54:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:13,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:13,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:54:13,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:54:13,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:54:13,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:54:13,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:54:13,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:54:13,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:54:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:13,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:54:13,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:54:13,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764742711] [2025-03-09 00:54:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764742711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:54:13,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:54:13,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:54:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063719884] [2025-03-09 00:54:13,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:54:13,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:54:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:54:13,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:54:13,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:54:13,666 INFO L87 Difference]: Start difference. First operand 2978 states and 5051 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:54:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:13,705 INFO L93 Difference]: Finished difference Result 2975 states and 5045 transitions. [2025-03-09 00:54:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:54:13,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-09 00:54:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:13,712 INFO L225 Difference]: With dead ends: 2975 [2025-03-09 00:54:13,712 INFO L226 Difference]: Without dead ends: 2975 [2025-03-09 00:54:13,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:54:13,713 INFO L435 NwaCegarLoop]: 2847 mSDtfsCounter, 0 mSDsluCounter, 5689 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8536 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:13,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8536 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:54:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2025-03-09 00:54:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2975. [2025-03-09 00:54:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 1642 states have (on average 1.848964677222899) internal successors, (3036), 2968 states have internal predecessors, (3036), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-09 00:54:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 5045 transitions. [2025-03-09 00:54:13,870 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 5045 transitions. Word has length 72 [2025-03-09 00:54:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:13,870 INFO L471 AbstractCegarLoop]: Abstraction has 2975 states and 5045 transitions. [2025-03-09 00:54:13,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:54:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 5045 transitions. [2025-03-09 00:54:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:54:13,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:13,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:13,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:54:14,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:14,072 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:14,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 36605224, now seen corresponding path program 1 times [2025-03-09 00:54:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:14,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596810190] [2025-03-09 00:54:14,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:54:14,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:14,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:14,074 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:14,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:54:14,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:54:14,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:54:14,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:54:14,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:54:14,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:54:14,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:54:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:14,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:54:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:54:14,356 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:54:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596810190] [2025-03-09 00:54:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596810190] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:54:14,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:54:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:54:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108691714] [2025-03-09 00:54:14,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:54:14,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:54:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:54:14,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:54:14,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:54:14,357 INFO L87 Difference]: Start difference. First operand 2975 states and 5045 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:54:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:54:14,497 INFO L93 Difference]: Finished difference Result 2987 states and 5062 transitions. [2025-03-09 00:54:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:54:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2025-03-09 00:54:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:54:14,505 INFO L225 Difference]: With dead ends: 2987 [2025-03-09 00:54:14,506 INFO L226 Difference]: Without dead ends: 2987 [2025-03-09 00:54:14,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:54:14,509 INFO L435 NwaCegarLoop]: 2847 mSDtfsCounter, 8 mSDsluCounter, 14216 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17063 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:54:14,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17063 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:54:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2025-03-09 00:54:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2985. [2025-03-09 00:54:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 1651 states have (on average 1.8479709267110842) internal successors, (3051), 2977 states have internal predecessors, (3051), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-09 00:54:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 5060 transitions. [2025-03-09 00:54:14,711 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 5060 transitions. Word has length 73 [2025-03-09 00:54:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:54:14,711 INFO L471 AbstractCegarLoop]: Abstraction has 2985 states and 5060 transitions. [2025-03-09 00:54:14,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:54:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 5060 transitions. [2025-03-09 00:54:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 00:54:14,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:54:14,713 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:54:14,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 00:54:14,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:14,914 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-09 00:54:14,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:54:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1065353375, now seen corresponding path program 2 times [2025-03-09 00:54:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:54:14,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125435976] [2025-03-09 00:54:14,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:54:14,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:54:14,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:54:14,918 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:54:14,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:54:15,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes.