./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.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/goblint-regression/09-regions_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:13:53,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:13:53,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:13:53,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:13:53,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:13:53,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:13:53,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:13:53,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:13:53,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:13:53,812 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:13:53,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:13:53,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:13:53,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:13:53,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:13:53,813 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:13:53,814 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:13:53,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:13:53,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:13:53,814 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 -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2025-03-09 01:13:54,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:13:54,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:13:54,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:13:54,049 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:13:54,049 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:13:54,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-09 01:13:55,286 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9464385/d8e32027d2fc4dbaaf7db245231fb586/FLAGad96c3579 [2025-03-09 01:13:55,584 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:13:55,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-09 01:13:55,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9464385/d8e32027d2fc4dbaaf7db245231fb586/FLAGad96c3579 [2025-03-09 01:13:55,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9464385/d8e32027d2fc4dbaaf7db245231fb586 [2025-03-09 01:13:55,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:13:55,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:13:55,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:13:55,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:13:55,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:13:55,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:13:55" (1/1) ... [2025-03-09 01:13:55,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625fe05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:55, skipping insertion in model container [2025-03-09 01:13:55,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:13:55" (1/1) ... [2025-03-09 01:13:55,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:13:56,208 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:13:56,209 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:13:56,209 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:13:56,210 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:13:56,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:13:56,265 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 01:13:56,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f052584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:56, skipping insertion in model container [2025-03-09 01:13:56,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:13:56,266 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 01:13:56,267 INFO L158 Benchmark]: Toolchain (without parser) took 402.54ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 114.3MB in the end (delta: 16.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:13:56,268 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:13:56,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.17ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 114.3MB in the end (delta: 16.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:13:56,269 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.17ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 114.3MB in the end (delta: 16.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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/goblint-regression/09-regions_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:13:58,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:13:58,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 01:13:58,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:13:58,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:13:58,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:13:58,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:13:58,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:13:58,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:13:58,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:13:58,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:13:58,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:13:58,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:13:58,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:13:58,185 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:13:58,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:13:58,186 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:13:58,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:13:58,187 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:13:58,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 01:13:58,187 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 01:13:58,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:13:58,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:13:58,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:13:58,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:13:58,188 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 -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2025-03-09 01:13:58,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:13:58,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:13:58,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:13:58,437 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:13:58,437 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:13:58,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-09 01:13:59,585 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a811479/f78cac592c584a1a873f339782393db7/FLAGd1d439229 [2025-03-09 01:13:59,882 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:13:59,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-09 01:13:59,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a811479/f78cac592c584a1a873f339782393db7/FLAGd1d439229 [2025-03-09 01:14:00,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a811479/f78cac592c584a1a873f339782393db7 [2025-03-09 01:14:00,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:14:00,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:14:00,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:14:00,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:14:00,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:14:00,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0f2f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00, skipping insertion in model container [2025-03-09 01:14:00,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:14:00,473 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,473 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,474 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,474 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:14:00,532 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 01:14:00,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:14:00,569 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,569 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,569 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,570 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:14:00,599 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:14:00,631 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,631 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,632 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,632 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-09 01:14:00,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:14:00,710 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:14:00,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00 WrapperNode [2025-03-09 01:14:00,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:14:00,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:14:00,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:14:00,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:14:00,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,769 INFO L138 Inliner]: procedures = 275, calls = 98, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 179 [2025-03-09 01:14:00,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:14:00,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:14:00,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:14:00,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:14:00,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,805 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2025-03-09 01:14:00,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:14:00,834 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:14:00,834 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:14:00,834 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:14:00,835 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (1/1) ... [2025-03-09 01:14:00,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:14:00,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:00,863 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 01:14:00,866 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 01:14:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 01:14:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-09 01:14:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-09 01:14:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 01:14:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:14:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 01:14:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:14:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:14:00,888 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:14:00,992 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:14:00,993 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:14:01,513 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:14:01,513 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:14:02,741 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:14:02,742 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:14:02,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:14:02 BoogieIcfgContainer [2025-03-09 01:14:02,743 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:14:02,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:14:02,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:14:02,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:14:02,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:14:00" (1/3) ... [2025-03-09 01:14:02,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a3ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:14:02, skipping insertion in model container [2025-03-09 01:14:02,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:14:00" (2/3) ... [2025-03-09 01:14:02,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a3ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:14:02, skipping insertion in model container [2025-03-09 01:14:02,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:14:02" (3/3) ... [2025-03-09 01:14:02,752 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2025-03-09 01:14:02,768 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:14:02,769 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_22-nocollapse.i that has 2 procedures, 60 locations, 1 initial locations, 4 loop locations, and 29 error locations. [2025-03-09 01:14:02,770 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:14:02,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 01:14:02,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 178 flow [2025-03-09 01:14:02,907 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2025-03-09 01:14:02,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:14:02,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 6/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 339 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2025-03-09 01:14:02,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 178 flow [2025-03-09 01:14:02,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2025-03-09 01:14:02,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:14:02,934 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;@45ebdfd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:14:02,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2025-03-09 01:14:02,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:14:02,942 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-03-09 01:14:02,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:14:02,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:02,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:14:02,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:02,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:02,948 INFO L85 PathProgramCache]: Analyzing trace with hash 499848, now seen corresponding path program 1 times [2025-03-09 01:14:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:02,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727928128] [2025-03-09 01:14:02,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:02,963 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 01:14:02,966 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 01:14:03,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:14:03,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:14:03,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:03,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:03,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:14:03,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:03,234 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 01:14:03,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:03,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727928128] [2025-03-09 01:14:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727928128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:03,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:03,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:14:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069612991] [2025-03-09 01:14:03,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:03,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:14:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:03,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:14:03,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:14:03,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-09 01:14:03,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 01:14:03,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:03,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-09 01:14:03,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:03,754 INFO L124 PetriNetUnfolderBase]: 389/845 cut-off events. [2025-03-09 01:14:03,754 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 01:14:03,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 845 events. 389/845 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4854 event pairs, 287 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 1421. Up to 606 conditions per place. [2025-03-09 01:14:03,762 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 32 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-09 01:14:03,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 234 flow [2025-03-09 01:14:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-03-09 01:14:03,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6558823529411765 [2025-03-09 01:14:03,773 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 4 states and 223 transitions. [2025-03-09 01:14:03,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 234 flow [2025-03-09 01:14:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:14:03,780 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 168 flow [2025-03-09 01:14:03,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2025-03-09 01:14:03,785 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-09 01:14:03,786 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 168 flow [2025-03-09 01:14:03,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 01:14:03,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:03,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:14:03,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 01:14:03,990 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 01:14:03,990 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:03,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash 499849, now seen corresponding path program 1 times [2025-03-09 01:14:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059558920] [2025-03-09 01:14:03,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:03,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:03,993 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 01:14:03,996 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 01:14:04,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:14:04,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:14:04,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:04,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:04,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:14:04,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:04,316 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 01:14:04,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:04,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:04,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059558920] [2025-03-09 01:14:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059558920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:04,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:04,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:14:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210385799] [2025-03-09 01:14:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:04,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:14:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:04,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:14:04,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:14:04,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2025-03-09 01:14:04,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 01:14:04,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:04,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2025-03-09 01:14:04,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:04,777 INFO L124 PetriNetUnfolderBase]: 390/850 cut-off events. [2025-03-09 01:14:04,777 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:14:04,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 850 events. 390/850 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4821 event pairs, 287 based on Foata normal form. 3/734 useless extension candidates. Maximal degree in co-relation 1461. Up to 611 conditions per place. [2025-03-09 01:14:04,787 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 36 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2025-03-09 01:14:04,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 262 flow [2025-03-09 01:14:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-03-09 01:14:04,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2025-03-09 01:14:04,791 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 168 flow. Second operand 4 states and 236 transitions. [2025-03-09 01:14:04,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 262 flow [2025-03-09 01:14:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:14:04,797 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 201 flow [2025-03-09 01:14:04,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2025-03-09 01:14:04,798 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-09 01:14:04,798 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 201 flow [2025-03-09 01:14:04,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 01:14:04,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:04,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 01:14:04,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 01:14:05,003 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 01:14:05,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:05,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2006481514, now seen corresponding path program 1 times [2025-03-09 01:14:05,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178606245] [2025-03-09 01:14:05,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:05,009 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 01:14:05,011 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 01:14:05,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 01:14:05,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 01:14:05,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:05,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:05,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:14:05,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:05,257 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 01:14:05,267 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 01:14:05,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:05,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178606245] [2025-03-09 01:14:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178606245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:14:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614491355] [2025-03-09 01:14:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:05,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:14:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:05,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:14:05,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:14:05,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2025-03-09 01:14:05,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:14:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:05,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2025-03-09 01:14:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:05,639 INFO L124 PetriNetUnfolderBase]: 390/849 cut-off events. [2025-03-09 01:14:05,639 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 01:14:05,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 849 events. 390/849 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4814 event pairs, 287 based on Foata normal form. 0/729 useless extension candidates. Maximal degree in co-relation 1467. Up to 607 conditions per place. [2025-03-09 01:14:05,646 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2025-03-09 01:14:05,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 273 flow [2025-03-09 01:14:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:14:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:14:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2025-03-09 01:14:05,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2025-03-09 01:14:05,650 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 201 flow. Second operand 3 states and 187 transitions. [2025-03-09 01:14:05,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 273 flow [2025-03-09 01:14:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:14:05,652 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 202 flow [2025-03-09 01:14:05,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2025-03-09 01:14:05,654 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-09 01:14:05,655 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 202 flow [2025-03-09 01:14:05,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:14:05,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:05,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 01:14:05,668 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 01:14:05,855 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 01:14:05,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:05,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2006481513, now seen corresponding path program 1 times [2025-03-09 01:14:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113065228] [2025-03-09 01:14:05,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:05,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:05,859 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 01:14:05,861 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 01:14:05,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 01:14:06,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 01:14:06,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:06,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:06,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:14:06,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:06,074 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 01:14:06,079 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 01:14:06,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:06,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:06,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113065228] [2025-03-09 01:14:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113065228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:06,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:06,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:14:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045836776] [2025-03-09 01:14:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:06,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:14:06,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:06,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:14:06,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:14:06,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2025-03-09 01:14:06,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:14:06,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:06,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2025-03-09 01:14:06,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:06,337 INFO L124 PetriNetUnfolderBase]: 390/848 cut-off events. [2025-03-09 01:14:06,337 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:14:06,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 848 events. 390/848 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4811 event pairs, 287 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 1466. Up to 607 conditions per place. [2025-03-09 01:14:06,342 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-03-09 01:14:06,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 274 flow [2025-03-09 01:14:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:14:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:14:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2025-03-09 01:14:06,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2025-03-09 01:14:06,344 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 202 flow. Second operand 3 states and 187 transitions. [2025-03-09 01:14:06,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 274 flow [2025-03-09 01:14:06,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:14:06,346 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 200 flow [2025-03-09 01:14:06,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-03-09 01:14:06,347 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-09 01:14:06,347 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 200 flow [2025-03-09 01:14:06,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:14:06,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:06,347 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-09 01:14:06,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:14:06,552 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 01:14:06,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:06,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2071384423, now seen corresponding path program 1 times [2025-03-09 01:14:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451782209] [2025-03-09 01:14:06,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:06,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:06,555 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 01:14:06,556 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 01:14:06,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:14:06,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:14:06,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:06,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:06,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 01:14:06,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:14:06,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:06,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451782209] [2025-03-09 01:14:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451782209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:06,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:14:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884704244] [2025-03-09 01:14:06,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:06,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:14:06,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:06,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:14:06,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:14:06,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 85 [2025-03-09 01:14:06,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:14:06,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:06,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 85 [2025-03-09 01:14:06,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:06,983 INFO L124 PetriNetUnfolderBase]: 389/870 cut-off events. [2025-03-09 01:14:06,983 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-09 01:14:06,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 870 events. 389/870 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4837 event pairs, 287 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 1497. Up to 607 conditions per place. [2025-03-09 01:14:06,989 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 38 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-09 01:14:06,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 294 flow [2025-03-09 01:14:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:14:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:14:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2025-03-09 01:14:06,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2025-03-09 01:14:06,990 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 200 flow. Second operand 3 states and 195 transitions. [2025-03-09 01:14:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 294 flow [2025-03-09 01:14:06,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:14:06,992 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 205 flow [2025-03-09 01:14:06,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2025-03-09 01:14:06,992 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-09 01:14:06,992 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 205 flow [2025-03-09 01:14:06,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:14:06,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:06,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:07,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:14:07,193 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 01:14:07,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:07,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2071385298, now seen corresponding path program 1 times [2025-03-09 01:14:07,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:07,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138504059] [2025-03-09 01:14:07,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:07,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:07,197 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 01:14:07,198 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 01:14:07,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:14:07,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:14:07,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:07,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:07,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:14:07,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:07,390 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 01:14:07,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:07,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:07,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138504059] [2025-03-09 01:14:07,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138504059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:07,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:07,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:14:07,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294523410] [2025-03-09 01:14:07,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:07,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:14:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:07,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:14:07,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:14:07,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-09 01:14:07,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 01:14:07,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:07,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-09 01:14:07,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:07,697 INFO L124 PetriNetUnfolderBase]: 389/866 cut-off events. [2025-03-09 01:14:07,697 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-09 01:14:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 866 events. 389/866 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4835 event pairs, 287 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 1496. Up to 612 conditions per place. [2025-03-09 01:14:07,701 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 34 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2025-03-09 01:14:07,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 279 flow [2025-03-09 01:14:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:14:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:14:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-03-09 01:14:07,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2025-03-09 01:14:07,704 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 205 flow. Second operand 3 states and 175 transitions. [2025-03-09 01:14:07,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 279 flow [2025-03-09 01:14:07,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:14:07,706 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 208 flow [2025-03-09 01:14:07,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2025-03-09 01:14:07,706 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-09 01:14:07,706 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 208 flow [2025-03-09 01:14:07,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 01:14:07,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:07,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:07,720 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 01:14:07,907 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 01:14:07,907 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:07,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2071385299, now seen corresponding path program 1 times [2025-03-09 01:14:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481690390] [2025-03-09 01:14:07,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:07,913 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 01:14:07,914 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 01:14:07,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 01:14:08,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 01:14:08,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:08,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:08,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 01:14:08,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:08,135 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 01:14:08,160 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 01:14:08,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:08,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481690390] [2025-03-09 01:14:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481690390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:08,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:14:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6345607] [2025-03-09 01:14:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:08,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:14:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:08,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:14:08,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:14:08,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2025-03-09 01:14:08,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 01:14:08,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:08,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2025-03-09 01:14:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:08,533 INFO L124 PetriNetUnfolderBase]: 389/862 cut-off events. [2025-03-09 01:14:08,533 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-09 01:14:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 862 events. 389/862 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4804 event pairs, 287 based on Foata normal form. 4/743 useless extension candidates. Maximal degree in co-relation 1493. Up to 611 conditions per place. [2025-03-09 01:14:08,537 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2025-03-09 01:14:08,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 282 flow [2025-03-09 01:14:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2025-03-09 01:14:08,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2025-03-09 01:14:08,539 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 208 flow. Second operand 4 states and 225 transitions. [2025-03-09 01:14:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 282 flow [2025-03-09 01:14:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:14:08,541 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 202 flow [2025-03-09 01:14:08,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2025-03-09 01:14:08,542 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-09 01:14:08,542 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 202 flow [2025-03-09 01:14:08,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 01:14:08,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:08,542 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:08,554 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 01:14:08,743 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 01:14:08,743 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:08,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2031426164, now seen corresponding path program 1 times [2025-03-09 01:14:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426373943] [2025-03-09 01:14:08,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:08,746 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 01:14:08,747 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 01:14:08,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 01:14:08,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 01:14:08,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:08,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:08,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:14:08,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:09,016 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-09 01:14:09,016 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 16 treesize of output 17 [2025-03-09 01:14:09,078 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 01:14:09,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:09,078 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426373943] [2025-03-09 01:14:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426373943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:14:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878065023] [2025-03-09 01:14:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:09,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:14:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:09,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:14:09,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:14:09,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-09 01:14:09,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 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 01:14:09,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:09,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-09 01:14:09,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:09,555 INFO L124 PetriNetUnfolderBase]: 389/858 cut-off events. [2025-03-09 01:14:09,555 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-09 01:14:09,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 858 events. 389/858 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4761 event pairs, 287 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 1493. Up to 613 conditions per place. [2025-03-09 01:14:09,558 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2025-03-09 01:14:09,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 276 flow [2025-03-09 01:14:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2025-03-09 01:14:09,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-09 01:14:09,560 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 202 flow. Second operand 4 states and 221 transitions. [2025-03-09 01:14:09,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 276 flow [2025-03-09 01:14:09,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:14:09,561 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 198 flow [2025-03-09 01:14:09,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2025-03-09 01:14:09,561 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2025-03-09 01:14:09,561 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 198 flow [2025-03-09 01:14:09,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 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 01:14:09,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:09,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:09,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 01:14:09,762 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 01:14:09,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:09,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2031426165, now seen corresponding path program 1 times [2025-03-09 01:14:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936126739] [2025-03-09 01:14:09,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:09,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:09,766 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 01:14:09,767 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 01:14:09,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 01:14:09,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 01:14:09,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:09,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:09,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:14:09,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:14:10,064 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 01:14:10,113 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 01:14:10,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:10,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936126739] [2025-03-09 01:14:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936126739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:14:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104589733] [2025-03-09 01:14:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:10,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:14:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:10,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:14:10,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:14:10,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2025-03-09 01:14:10,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 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 01:14:10,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:10,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2025-03-09 01:14:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:10,532 INFO L124 PetriNetUnfolderBase]: 390/888 cut-off events. [2025-03-09 01:14:10,532 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-09 01:14:10,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 888 events. 390/888 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5125 event pairs, 287 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 1484. Up to 615 conditions per place. [2025-03-09 01:14:10,535 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 41 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2025-03-09 01:14:10,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 320 flow [2025-03-09 01:14:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2025-03-09 01:14:10,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6970588235294117 [2025-03-09 01:14:10,537 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 198 flow. Second operand 4 states and 237 transitions. [2025-03-09 01:14:10,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 320 flow [2025-03-09 01:14:10,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:14:10,539 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 236 flow [2025-03-09 01:14:10,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2025-03-09 01:14:10,539 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-09 01:14:10,539 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 236 flow [2025-03-09 01:14:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 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 01:14:10,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:10,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:10,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 01:14:10,740 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 01:14:10,740 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:10,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1450297813, now seen corresponding path program 1 times [2025-03-09 01:14:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171006449] [2025-03-09 01:14:10,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:10,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:10,743 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 01:14:10,743 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 01:14:10,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 01:14:10,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 01:14:10,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:10,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:10,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-09 01:14:10,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:11,024 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 11 treesize of output 7 [2025-03-09 01:14:11,034 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 11 treesize of output 7 [2025-03-09 01:14:11,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-09 01:14:11,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-09 01:14:11,151 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:14:11,151 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 01:14:11,173 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 01:14:11,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:11,430 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 01:14:11,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:11,430 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171006449] [2025-03-09 01:14:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171006449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 01:14:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291470672] [2025-03-09 01:14:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:11,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:14:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:11,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:14:11,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:14:12,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 85 [2025-03-09 01:14:12,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 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 01:14:12,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:12,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 85 [2025-03-09 01:14:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:12,954 INFO L124 PetriNetUnfolderBase]: 390/887 cut-off events. [2025-03-09 01:14:12,954 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-09 01:14:12,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 887 events. 390/887 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5104 event pairs, 287 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 1518. Up to 628 conditions per place. [2025-03-09 01:14:12,959 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 56 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2025-03-09 01:14:12,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 408 flow [2025-03-09 01:14:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:14:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:14:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 430 transitions. [2025-03-09 01:14:12,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45989304812834225 [2025-03-09 01:14:12,961 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 236 flow. Second operand 11 states and 430 transitions. [2025-03-09 01:14:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 408 flow [2025-03-09 01:14:12,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:14:12,963 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 292 flow [2025-03-09 01:14:12,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=292, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2025-03-09 01:14:12,966 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2025-03-09 01:14:12,966 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 292 flow [2025-03-09 01:14:12,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 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 01:14:12,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:12,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:12,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 01:14:13,166 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 01:14:13,167 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:13,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1450297814, now seen corresponding path program 1 times [2025-03-09 01:14:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680400300] [2025-03-09 01:14:13,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:13,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:13,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:13,169 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 01:14:13,171 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 01:14:13,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 01:14:13,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 01:14:13,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:13,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:13,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-09 01:14:13,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:13,436 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 11 treesize of output 7 [2025-03-09 01:14:13,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-09 01:14:13,498 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:14:13,499 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 01:14:13,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:13,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:13,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-09 01:14:13,631 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 01:14:13,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:13,632 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680400300] [2025-03-09 01:14:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680400300] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:13,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 01:14:13,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637078879] [2025-03-09 01:14:13,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:13,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:14:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:13,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:14:13,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:14:14,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 85 [2025-03-09 01:14:14,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 292 flow. Second operand has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 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 01:14:14,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:14,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 85 [2025-03-09 01:14:14,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:15,297 INFO L124 PetriNetUnfolderBase]: 390/886 cut-off events. [2025-03-09 01:14:15,297 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-09 01:14:15,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 886 events. 390/886 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5104 event pairs, 287 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 1559. Up to 624 conditions per place. [2025-03-09 01:14:15,302 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 54 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2025-03-09 01:14:15,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 452 flow [2025-03-09 01:14:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:14:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:14:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 450 transitions. [2025-03-09 01:14:15,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2025-03-09 01:14:15,305 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 292 flow. Second operand 11 states and 450 transitions. [2025-03-09 01:14:15,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 452 flow [2025-03-09 01:14:15,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 95 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:14:15,310 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 314 flow [2025-03-09 01:14:15,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=314, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2025-03-09 01:14:15,312 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-03-09 01:14:15,312 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 314 flow [2025-03-09 01:14:15,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 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 01:14:15,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:15,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:15,326 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 01:14:15,513 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 01:14:15,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:15,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2009558832, now seen corresponding path program 1 times [2025-03-09 01:14:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189563840] [2025-03-09 01:14:15,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:15,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:15,516 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 01:14:15,517 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 01:14:15,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 01:14:15,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:14:15,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:15,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:15,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:14:15,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:15,732 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 01:14:15,764 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 01:14:15,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:15,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189563840] [2025-03-09 01:14:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189563840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:14:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579220047] [2025-03-09 01:14:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:15,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:14:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:15,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:14:15,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:14:15,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2025-03-09 01:14:15,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 01:14:15,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:15,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2025-03-09 01:14:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:16,052 INFO L124 PetriNetUnfolderBase]: 390/878 cut-off events. [2025-03-09 01:14:16,052 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-09 01:14:16,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 878 events. 390/878 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5017 event pairs, 287 based on Foata normal form. 8/768 useless extension candidates. Maximal degree in co-relation 1549. Up to 608 conditions per place. [2025-03-09 01:14:16,056 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2025-03-09 01:14:16,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 82 transitions, 398 flow [2025-03-09 01:14:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:14:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:14:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2025-03-09 01:14:16,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6794117647058824 [2025-03-09 01:14:16,058 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 314 flow. Second operand 4 states and 231 transitions. [2025-03-09 01:14:16,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 82 transitions, 398 flow [2025-03-09 01:14:16,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 82 transitions, 376 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-03-09 01:14:16,059 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 306 flow [2025-03-09 01:14:16,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2025-03-09 01:14:16,061 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2025-03-09 01:14:16,061 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 306 flow [2025-03-09 01:14:16,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 01:14:16,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:16,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:16,074 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 01:14:16,262 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 01:14:16,262 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:16,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2009558833, now seen corresponding path program 1 times [2025-03-09 01:14:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573920879] [2025-03-09 01:14:16,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:16,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:16,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:16,265 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 01:14:16,265 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 01:14:16,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 01:14:16,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:14:16,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:16,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:16,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 01:14:16,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:16,468 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 01:14:16,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:14:16,468 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573920879] [2025-03-09 01:14:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573920879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:14:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:14:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:14:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595161839] [2025-03-09 01:14:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:14:16,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:14:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:16,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:14:16,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:14:16,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2025-03-09 01:14:16,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 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 01:14:16,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:16,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2025-03-09 01:14:16,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:16,815 INFO L124 PetriNetUnfolderBase]: 390/870 cut-off events. [2025-03-09 01:14:16,815 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-03-09 01:14:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 870 events. 390/870 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4961 event pairs, 287 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 1561. Up to 610 conditions per place. [2025-03-09 01:14:16,819 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 38 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2025-03-09 01:14:16,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 80 transitions, 400 flow [2025-03-09 01:14:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:14:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:14:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2025-03-09 01:14:16,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2025-03-09 01:14:16,821 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 306 flow. Second operand 5 states and 264 transitions. [2025-03-09 01:14:16,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 80 transitions, 400 flow [2025-03-09 01:14:16,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:14:16,822 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 306 flow [2025-03-09 01:14:16,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2025-03-09 01:14:16,823 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2025-03-09 01:14:16,823 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 306 flow [2025-03-09 01:14:16,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 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 01:14:16,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:16,823 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:16,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 01:14:17,025 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 01:14:17,025 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:17,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 215680999, now seen corresponding path program 1 times [2025-03-09 01:14:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284733192] [2025-03-09 01:14:17,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:17,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:17,028 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 01:14:17,029 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 01:14:17,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:14:17,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:14:17,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:17,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:17,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:14:17,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:14:17,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:14:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:14:17,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284733192] [2025-03-09 01:14:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284733192] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:14:17,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:14:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2025-03-09 01:14:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731585095] [2025-03-09 01:14:17,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 01:14:17,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:14:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:17,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:14:17,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:14:17,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 85 [2025-03-09 01:14:17,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 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 01:14:17,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:17,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 85 [2025-03-09 01:14:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:14:17,577 INFO L124 PetriNetUnfolderBase]: 390/920 cut-off events. [2025-03-09 01:14:17,577 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-03-09 01:14:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 920 events. 390/920 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4947 event pairs, 287 based on Foata normal form. 6/812 useless extension candidates. Maximal degree in co-relation 1682. Up to 604 conditions per place. [2025-03-09 01:14:17,582 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 52 selfloop transitions, 11 changer transitions 0/99 dead transitions. [2025-03-09 01:14:17,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 99 transitions, 560 flow [2025-03-09 01:14:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:14:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:14:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 364 transitions. [2025-03-09 01:14:17,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7137254901960784 [2025-03-09 01:14:17,584 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 306 flow. Second operand 6 states and 364 transitions. [2025-03-09 01:14:17,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 99 transitions, 560 flow [2025-03-09 01:14:17,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 506 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:14:17,586 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 370 flow [2025-03-09 01:14:17,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2025-03-09 01:14:17,587 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2025-03-09 01:14:17,587 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 370 flow [2025-03-09 01:14:17,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 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 01:14:17,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:14:17,589 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:14:17,603 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 01:14:17,789 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 01:14:17,789 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:14:17,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:14:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash 108031914, now seen corresponding path program 1 times [2025-03-09 01:14:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:14:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428584459] [2025-03-09 01:14:17,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:14:17,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:14:17,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:14:17,792 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 01:14:17,793 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 01:14:17,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:14:18,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:14:18,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:14:18,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:14:18,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-09 01:14:18,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:14:18,143 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 23 treesize of output 1 [2025-03-09 01:14:18,194 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2025-03-09 01:14:18,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2025-03-09 01:14:18,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2025-03-09 01:14:18,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2025-03-09 01:14:18,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2025-03-09 01:14:18,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-03-09 01:14:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:14:18,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:14:18,537 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_572) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2025-03-09 01:14:19,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:14:19,193 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2025-03-09 01:14:19,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:14:19,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2025-03-09 01:14:19,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 14 [2025-03-09 01:14:49,284 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2025-03-09 01:14:49,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 272 [2025-03-09 01:14:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-09 01:14:49,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:14:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428584459] [2025-03-09 01:14:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428584459] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:14:49,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:14:49,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2025-03-09 01:14:49,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292048616] [2025-03-09 01:14:49,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 01:14:49,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 01:14:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:14:49,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 01:14:49,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=314, Unknown=12, NotChecked=36, Total=420 [2025-03-09 01:14:55,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-09 01:14:59,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-09 01:14:59,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 85 [2025-03-09 01:14:59,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 370 flow. Second operand has 21 states, 21 states have (on average 13.523809523809524) internal successors, (284), 21 states have internal predecessors, (284), 0 states have call successors, (0), 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 01:14:59,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:14:59,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 85 [2025-03-09 01:14:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:15:05,877 INFO L124 PetriNetUnfolderBase]: 1518/2683 cut-off events. [2025-03-09 01:15:05,877 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2025-03-09 01:15:05,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 2683 events. 1518/2683 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15286 event pairs, 1287 based on Foata normal form. 6/1901 useless extension candidates. Maximal degree in co-relation 5245. Up to 2340 conditions per place. [2025-03-09 01:15:05,889 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 59 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2025-03-09 01:15:05,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 96 transitions, 582 flow [2025-03-09 01:15:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:15:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:15:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-03-09 01:15:05,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20452488687782805 [2025-03-09 01:15:05,891 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 370 flow. Second operand 13 states and 226 transitions. [2025-03-09 01:15:05,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 96 transitions, 582 flow [2025-03-09 01:15:05,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 96 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-09 01:15:05,894 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 434 flow [2025-03-09 01:15:05,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=434, PETRI_PLACES=111, PETRI_TRANSITIONS=90} [2025-03-09 01:15:05,894 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2025-03-09 01:15:05,894 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 434 flow [2025-03-09 01:15:05,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.523809523809524) internal successors, (284), 21 states have internal predecessors, (284), 0 states have call successors, (0), 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 01:15:05,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:15:05,894 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:15:05,912 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 01:15:06,095 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 01:15:06,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-09 01:15:06,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:15:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash 108031915, now seen corresponding path program 1 times [2025-03-09 01:15:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:15:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021359586] [2025-03-09 01:15:06,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:15:06,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:15:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:15:06,098 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 01:15:06,098 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 01:15:06,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:15:06,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:15:06,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:15:06,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:15:06,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-09 01:15:06,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:15:06,370 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 01:15:06,525 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 15 treesize of output 11 [2025-03-09 01:15:06,537 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 23 treesize of output 1 [2025-03-09 01:15:06,591 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2025-03-09 01:15:06,591 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 20 treesize of output 22 [2025-03-09 01:15:06,608 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:15:06,608 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 01:15:06,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-03-09 01:15:06,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2025-03-09 01:15:06,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2025-03-09 01:15:06,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-03-09 01:15:06,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-09 01:15:06,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-09 01:15:06,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-09 01:15:06,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-09 01:15:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:15:06,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:15:06,906 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_679) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_679) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_678) |c_~#c~0.base|) .cse1)))))) is different from false [2025-03-09 01:15:07,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,286 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2025-03-09 01:15:07,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2025-03-09 01:15:07,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 01:15:07,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,372 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2025-03-09 01:15:07,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,386 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2025-03-09 01:15:07,390 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:15:07,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38 treesize of output 41 [2025-03-09 01:15:07,411 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:15:07,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:07,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 30 [2025-03-09 01:15:09,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:15:09,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 197 treesize of output 833