./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-798a7b3-m [2025-03-04 10:00:54,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:00:54,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:00:54,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:00:54,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:00:54,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:00:54,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:00:54,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:00:54,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:00:54,824 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:00:54,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:00:54,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:00:54,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:00:54,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:00:54,826 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:00:54,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:00:54,826 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:00:54,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:00:54,827 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:00:54,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:54,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:00:54,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:00:54,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:00:54,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:00:54,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:00:54,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:00:54,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:00:54,829 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 [2025-03-04 10:00:55,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:00:55,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:00:55,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:00:55,087 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:00:55,087 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:00:55,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-04 10:00:56,203 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837115b15/8becb5940f504205b512f0cd2f6e1983/FLAG522bc723d [2025-03-04 10:00:56,496 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:00:56,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-04 10:00:56,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837115b15/8becb5940f504205b512f0cd2f6e1983/FLAG522bc723d [2025-03-04 10:00:56,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837115b15/8becb5940f504205b512f0cd2f6e1983 [2025-03-04 10:00:56,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:00:56,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:00:56,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:56,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:00:56,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:00:56,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:56" (1/1) ... [2025-03-04 10:00:56,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307f70cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:56, skipping insertion in model container [2025-03-04 10:00:56,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:56" (1/1) ... [2025-03-04 10:00:56,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:00:56,827 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:00:56,828 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:00:56,828 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:00:56,828 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:00:56,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:00:56,875 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 10:00:56,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b34ebb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:56, skipping insertion in model container [2025-03-04 10:00:56,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:56,876 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 10:00:56,877 INFO L158 Benchmark]: Toolchain (without parser) took 352.42ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 105.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:00:56,881 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:56,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.89ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 105.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:00:56,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.89ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 105.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. 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-?-798a7b3-m [2025-03-04 10:00:58,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:00:58,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 10:00:58,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:00:58,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:00:58,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:00:58,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:00:58,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:00:58,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:00:58,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:00:58,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:00:58,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:00:58,733 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:00:58,734 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:58,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 10:00:58,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 10:00:58,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:00:58,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:00:58,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:00:58,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:00:58,735 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 [2025-03-04 10:00:59,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:00:59,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:00:59,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:00:59,027 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:00:59,029 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:00:59,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-04 10:01:00,232 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ecf482f/94b2cd648e8445d99a696e8fc7ee62b1/FLAG1df209dfd [2025-03-04 10:01:00,450 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:01:00,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2025-03-04 10:01:00,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ecf482f/94b2cd648e8445d99a696e8fc7ee62b1/FLAG1df209dfd [2025-03-04 10:01:00,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ecf482f/94b2cd648e8445d99a696e8fc7ee62b1 [2025-03-04 10:01:00,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:01:00,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:01:00,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:01:00,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:01:00,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:01:00,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:01:00" (1/1) ... [2025-03-04 10:01:00,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc4dc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:00, skipping insertion in model container [2025-03-04 10:01:00,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:01:00" (1/1) ... [2025-03-04 10:01:00,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:01:00,866 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,867 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,868 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,868 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:01:00,924 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 10:01:00,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:01:00,974 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,974 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,975 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,976 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:00,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:01:01,011 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:01:01,044 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:01,047 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:01,047 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:01,047 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 10:01:01,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:01:01,098 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:01:01,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01 WrapperNode [2025-03-04 10:01:01,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:01:01,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:01:01,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:01:01,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:01:01,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,138 INFO L138 Inliner]: procedures = 275, calls = 98, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 179 [2025-03-04 10:01:01,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:01:01,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:01:01,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:01:01,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:01:01,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,169 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]. [2025-03-04 10:01:01,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,181 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:01:01,196 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:01:01,196 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:01:01,196 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:01:01,197 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (1/1) ... [2025-03-04 10:01:01,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:01:01,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:01,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:01:01,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 10:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-04 10:01:01,249 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 10:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:01:01,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:01:01,251 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:01:01,405 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:01:01,407 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:01:01,977 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:01:01,978 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:01:03,270 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:01:03,270 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:01:03,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:01:03 BoogieIcfgContainer [2025-03-04 10:01:03,270 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:01:03,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:01:03,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:01:03,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:01:03,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:01:00" (1/3) ... [2025-03-04 10:01:03,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2412b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:01:03, skipping insertion in model container [2025-03-04 10:01:03,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:01:01" (2/3) ... [2025-03-04 10:01:03,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2412b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:01:03, skipping insertion in model container [2025-03-04 10:01:03,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:01:03" (3/3) ... [2025-03-04 10:01:03,279 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2025-03-04 10:01:03,290 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:01:03,291 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. [2025-03-04 10:01:03,291 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:01:03,378 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 10:01:03,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 178 flow [2025-03-04 10:01:03,450 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2025-03-04 10:01:03,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 10:01:03,457 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. [2025-03-04 10:01:03,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 178 flow [2025-03-04 10:01:03,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2025-03-04 10:01:03,469 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:01:03,478 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;@3f883403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:01:03,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2025-03-04 10:01:03,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:01:03,488 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-03-04 10:01:03,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 10:01:03,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:03,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 10:01:03,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:03,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash 499848, now seen corresponding path program 1 times [2025-03-04 10:01:03,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:03,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197649659] [2025-03-04 10:01:03,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:03,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:03,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:03,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:03,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 10:01:03,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 10:01:03,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 10:01:03,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:03,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:03,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 10:01:03,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:03,779 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:03,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197649659] [2025-03-04 10:01:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197649659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:01:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311069262] [2025-03-04 10:01:03,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:03,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:01:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:03,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:01:03,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:01:03,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-04 10:01:03,982 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) [2025-03-04 10:01:03,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:03,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-04 10:01:03,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:04,252 INFO L124 PetriNetUnfolderBase]: 389/845 cut-off events. [2025-03-04 10:01:04,253 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 10:01:04,255 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. [2025-03-04 10:01:04,259 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 32 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-04 10:01:04,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 234 flow [2025-03-04 10:01:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-03-04 10:01:04,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6558823529411765 [2025-03-04 10:01:04,272 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 4 states and 223 transitions. [2025-03-04 10:01:04,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 234 flow [2025-03-04 10:01:04,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:01:04,278 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 168 flow [2025-03-04 10:01:04,280 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} [2025-03-04 10:01:04,283 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-04 10:01:04,283 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 168 flow [2025-03-04 10:01:04,284 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) [2025-03-04 10:01:04,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:04,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 10:01:04,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 10:01:04,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:04,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash 499849, now seen corresponding path program 1 times [2025-03-04 10:01:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736095299] [2025-03-04 10:01:04,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:04,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:04,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 10:01:04,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 10:01:04,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 10:01:04,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:04,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:04,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:01:04,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:04,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:04,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:04,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736095299] [2025-03-04 10:01:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736095299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:04,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:04,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:01:04,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181705449] [2025-03-04 10:01:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:01:04,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:04,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:01:04,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:01:04,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2025-03-04 10:01:04,914 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) [2025-03-04 10:01:04,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:04,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2025-03-04 10:01:04,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:05,189 INFO L124 PetriNetUnfolderBase]: 390/850 cut-off events. [2025-03-04 10:01:05,190 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 10:01:05,191 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. [2025-03-04 10:01:05,195 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 36 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2025-03-04 10:01:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 262 flow [2025-03-04 10:01:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-03-04 10:01:05,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2025-03-04 10:01:05,197 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 168 flow. Second operand 4 states and 236 transitions. [2025-03-04 10:01:05,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 262 flow [2025-03-04 10:01:05,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 10:01:05,201 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 201 flow [2025-03-04 10:01:05,201 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} [2025-03-04 10:01:05,201 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-04 10:01:05,201 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 201 flow [2025-03-04 10:01:05,202 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) [2025-03-04 10:01:05,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:05,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 10:01:05,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 10:01:05,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:05,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:05,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2006481514, now seen corresponding path program 1 times [2025-03-04 10:01:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276662753] [2025-03-04 10:01:05,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:05,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:05,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:05,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 10:01:05,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 10:01:05,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 10:01:05,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:05,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:05,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 10:01:05,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:05,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 10:01:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:05,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:05,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:05,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276662753] [2025-03-04 10:01:05,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276662753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:05,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:05,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:01:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131527950] [2025-03-04 10:01:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:05,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:01:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:05,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:01:05,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:01:05,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2025-03-04 10:01:05,768 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) [2025-03-04 10:01:05,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:05,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2025-03-04 10:01:05,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:05,963 INFO L124 PetriNetUnfolderBase]: 390/849 cut-off events. [2025-03-04 10:01:05,963 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 10:01:05,964 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. [2025-03-04 10:01:05,968 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2025-03-04 10:01:05,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 273 flow [2025-03-04 10:01:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:01:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:01:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2025-03-04 10:01:05,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2025-03-04 10:01:05,970 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 201 flow. Second operand 3 states and 187 transitions. [2025-03-04 10:01:05,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 273 flow [2025-03-04 10:01:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:01:05,972 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 202 flow [2025-03-04 10:01:05,972 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} [2025-03-04 10:01:05,972 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-04 10:01:05,972 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 202 flow [2025-03-04 10:01:05,973 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) [2025-03-04 10:01:05,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:05,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 10:01:05,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 10:01:06,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:06,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:06,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2006481513, now seen corresponding path program 1 times [2025-03-04 10:01:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:06,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043373195] [2025-03-04 10:01:06,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:06,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:06,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:06,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 10:01:06,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 10:01:06,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 10:01:06,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:06,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:06,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 10:01:06,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:06,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 10:01:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:06,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:06,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043373195] [2025-03-04 10:01:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043373195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:01:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951598098] [2025-03-04 10:01:06,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:06,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:01:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:06,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:01:06,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:01:06,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2025-03-04 10:01:06,467 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) [2025-03-04 10:01:06,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:06,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2025-03-04 10:01:06,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:06,662 INFO L124 PetriNetUnfolderBase]: 390/848 cut-off events. [2025-03-04 10:01:06,662 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 10:01:06,664 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. [2025-03-04 10:01:06,667 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2025-03-04 10:01:06,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 274 flow [2025-03-04 10:01:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:01:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:01:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2025-03-04 10:01:06,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2025-03-04 10:01:06,671 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 202 flow. Second operand 3 states and 187 transitions. [2025-03-04 10:01:06,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 274 flow [2025-03-04 10:01:06,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:01:06,674 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 200 flow [2025-03-04 10:01:06,674 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} [2025-03-04 10:01:06,676 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-04 10:01:06,676 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 200 flow [2025-03-04 10:01:06,677 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) [2025-03-04 10:01:06,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:06,677 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 10:01:06,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 10:01:06,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:06,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:06,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2071384423, now seen corresponding path program 1 times [2025-03-04 10:01:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:06,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983049431] [2025-03-04 10:01:06,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:06,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:06,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:06,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:06,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 10:01:06,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 10:01:07,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 10:01:07,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:07,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:07,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 10:01:07,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:07,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:07,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983049431] [2025-03-04 10:01:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983049431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:01:07,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987134701] [2025-03-04 10:01:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:07,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:01:07,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:07,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:01:07,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:01:07,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 85 [2025-03-04 10:01:07,063 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) [2025-03-04 10:01:07,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:07,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 85 [2025-03-04 10:01:07,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:07,260 INFO L124 PetriNetUnfolderBase]: 389/870 cut-off events. [2025-03-04 10:01:07,261 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-04 10:01:07,262 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. [2025-03-04 10:01:07,266 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 38 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-04 10:01:07,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 294 flow [2025-03-04 10:01:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:01:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:01:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2025-03-04 10:01:07,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2025-03-04 10:01:07,268 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 200 flow. Second operand 3 states and 195 transitions. [2025-03-04 10:01:07,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 294 flow [2025-03-04 10:01:07,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:01:07,269 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 205 flow [2025-03-04 10:01:07,270 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} [2025-03-04 10:01:07,270 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-03-04 10:01:07,270 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 205 flow [2025-03-04 10:01:07,270 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) [2025-03-04 10:01:07,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:07,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:07,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 10:01:07,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:07,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:07,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2071385298, now seen corresponding path program 1 times [2025-03-04 10:01:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:07,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885784850] [2025-03-04 10:01:07,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:07,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:07,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 10:01:07,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 10:01:07,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 10:01:07,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:07,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:07,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 10:01:07,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:07,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:07,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885784850] [2025-03-04 10:01:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885784850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:07,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:01:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573517029] [2025-03-04 10:01:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:07,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:01:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:07,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:01:07,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:01:07,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-04 10:01:07,737 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) [2025-03-04 10:01:07,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:07,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-04 10:01:07,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:07,915 INFO L124 PetriNetUnfolderBase]: 389/866 cut-off events. [2025-03-04 10:01:07,915 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-04 10:01:07,916 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. [2025-03-04 10:01:07,919 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 34 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2025-03-04 10:01:07,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 279 flow [2025-03-04 10:01:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:01:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:01:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-03-04 10:01:07,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2025-03-04 10:01:07,921 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 205 flow. Second operand 3 states and 175 transitions. [2025-03-04 10:01:07,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 279 flow [2025-03-04 10:01:07,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:01:07,922 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 208 flow [2025-03-04 10:01:07,922 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} [2025-03-04 10:01:07,923 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-04 10:01:07,923 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 208 flow [2025-03-04 10:01:07,923 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) [2025-03-04 10:01:07,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:07,923 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:07,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 10:01:08,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:08,124 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:08,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2071385299, now seen corresponding path program 1 times [2025-03-04 10:01:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732375903] [2025-03-04 10:01:08,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:08,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:08,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 10:01:08,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 10:01:08,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 10:01:08,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:08,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:08,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 10:01:08,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:08,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 10:01:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:08,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:08,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732375903] [2025-03-04 10:01:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732375903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:08,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:01:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198773312] [2025-03-04 10:01:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:08,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:01:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:08,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:01:08,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:01:08,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2025-03-04 10:01:08,483 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) [2025-03-04 10:01:08,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:08,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2025-03-04 10:01:08,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:08,671 INFO L124 PetriNetUnfolderBase]: 389/862 cut-off events. [2025-03-04 10:01:08,671 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-04 10:01:08,672 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. [2025-03-04 10:01:08,674 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2025-03-04 10:01:08,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 282 flow [2025-03-04 10:01:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2025-03-04 10:01:08,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2025-03-04 10:01:08,676 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 208 flow. Second operand 4 states and 225 transitions. [2025-03-04 10:01:08,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 282 flow [2025-03-04 10:01:08,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:01:08,678 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 202 flow [2025-03-04 10:01:08,678 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} [2025-03-04 10:01:08,678 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-04 10:01:08,678 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 202 flow [2025-03-04 10:01:08,678 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) [2025-03-04 10:01:08,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:08,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:08,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 10:01:08,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:08,879 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:08,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2031426164, now seen corresponding path program 1 times [2025-03-04 10:01:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347045338] [2025-03-04 10:01:08,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:08,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:08,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:08,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:08,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 10:01:08,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 10:01:09,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 10:01:09,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:09,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:09,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:01:09,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:09,126 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-04 10:01:09,127 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 [2025-03-04 10:01:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:09,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:09,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:09,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347045338] [2025-03-04 10:01:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347045338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:09,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:01:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849057437] [2025-03-04 10:01:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:01:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:09,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:01:09,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:01:09,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2025-03-04 10:01:09,391 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) [2025-03-04 10:01:09,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:09,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2025-03-04 10:01:09,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:09,591 INFO L124 PetriNetUnfolderBase]: 389/858 cut-off events. [2025-03-04 10:01:09,592 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-04 10:01:09,593 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. [2025-03-04 10:01:09,595 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2025-03-04 10:01:09,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 276 flow [2025-03-04 10:01:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2025-03-04 10:01:09,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-04 10:01:09,597 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 202 flow. Second operand 4 states and 221 transitions. [2025-03-04 10:01:09,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 276 flow [2025-03-04 10:01:09,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 10:01:09,598 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 198 flow [2025-03-04 10:01:09,599 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} [2025-03-04 10:01:09,599 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2025-03-04 10:01:09,599 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 198 flow [2025-03-04 10:01:09,599 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) [2025-03-04 10:01:09,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:09,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:09,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 10:01:09,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:09,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:09,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2031426165, now seen corresponding path program 1 times [2025-03-04 10:01:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451879190] [2025-03-04 10:01:09,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:09,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:09,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:09,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:09,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 10:01:09,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 10:01:09,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 10:01:09,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:09,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:10,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 10:01:10,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 10:01:10,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 10:01:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:10,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:10,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451879190] [2025-03-04 10:01:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451879190] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:01:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164245179] [2025-03-04 10:01:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:10,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:01:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:10,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:01:10,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:01:10,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2025-03-04 10:01:10,331 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) [2025-03-04 10:01:10,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:10,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2025-03-04 10:01:10,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:10,580 INFO L124 PetriNetUnfolderBase]: 390/888 cut-off events. [2025-03-04 10:01:10,580 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-04 10:01:10,581 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. [2025-03-04 10:01:10,584 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 41 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2025-03-04 10:01:10,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 320 flow [2025-03-04 10:01:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2025-03-04 10:01:10,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6970588235294117 [2025-03-04 10:01:10,586 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 198 flow. Second operand 4 states and 237 transitions. [2025-03-04 10:01:10,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 320 flow [2025-03-04 10:01:10,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 10:01:10,587 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 236 flow [2025-03-04 10:01:10,587 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} [2025-03-04 10:01:10,588 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2025-03-04 10:01:10,588 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 236 flow [2025-03-04 10:01:10,588 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) [2025-03-04 10:01:10,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:10,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:10,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 10:01:10,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:10,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:10,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1450297813, now seen corresponding path program 1 times [2025-03-04 10:01:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9695985] [2025-03-04 10:01:10,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:10,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:10,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:10,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 10:01:10,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 10:01:10,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 10:01:10,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:10,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:11,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-04 10:01:11,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:11,081 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 [2025-03-04 10:01:11,089 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 [2025-03-04 10:01:11,128 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 [2025-03-04 10:01:11,139 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 [2025-03-04 10:01:11,199 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 10:01:11,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 10:01:11,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 10:01:11,260 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 [2025-03-04 10:01:11,268 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 [2025-03-04 10:01:11,320 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 [2025-03-04 10:01:11,332 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 [2025-03-04 10:01:11,409 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 [2025-03-04 10:01:11,418 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 [2025-03-04 10:01:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:11,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:11,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9695985] [2025-03-04 10:01:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9695985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:11,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 10:01:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703019029] [2025-03-04 10:01:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:11,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 10:01:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:11,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 10:01:11,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-04 10:01:12,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 85 [2025-03-04 10:01:12,340 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) [2025-03-04 10:01:12,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:12,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 85 [2025-03-04 10:01:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:12,950 INFO L124 PetriNetUnfolderBase]: 390/887 cut-off events. [2025-03-04 10:01:12,950 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-04 10:01:12,951 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. [2025-03-04 10:01:12,955 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 56 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2025-03-04 10:01:12,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 408 flow [2025-03-04 10:01:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 10:01:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 10:01:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 430 transitions. [2025-03-04 10:01:12,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45989304812834225 [2025-03-04 10:01:12,960 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 236 flow. Second operand 11 states and 430 transitions. [2025-03-04 10:01:12,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 408 flow [2025-03-04 10:01:12,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:01:12,963 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 292 flow [2025-03-04 10:01:12,964 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} [2025-03-04 10:01:12,964 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2025-03-04 10:01:12,964 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 292 flow [2025-03-04 10:01:12,964 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) [2025-03-04 10:01:12,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:12,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:12,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 10:01:13,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:13,165 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:13,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1450297814, now seen corresponding path program 1 times [2025-03-04 10:01:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897904935] [2025-03-04 10:01:13,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:13,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:13,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:13,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:13,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 10:01:13,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 10:01:13,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 10:01:13,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:13,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:13,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 10:01:13,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:13,485 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 [2025-03-04 10:01:13,521 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 [2025-03-04 10:01:13,568 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 10:01:13,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 10:01:13,602 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 [2025-03-04 10:01:13,642 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 [2025-03-04 10:01:13,677 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 [2025-03-04 10:01:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:13,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:13,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:13,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897904935] [2025-03-04 10:01:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897904935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:13,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:13,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 10:01:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129802607] [2025-03-04 10:01:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:13,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 10:01:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:13,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 10:01:13,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-04 10:01:14,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 85 [2025-03-04 10:01:14,765 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) [2025-03-04 10:01:14,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:14,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 85 [2025-03-04 10:01:14,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:15,387 INFO L124 PetriNetUnfolderBase]: 390/886 cut-off events. [2025-03-04 10:01:15,387 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-04 10:01:15,388 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. [2025-03-04 10:01:15,390 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 54 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2025-03-04 10:01:15,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 452 flow [2025-03-04 10:01:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 10:01:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 10:01:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 450 transitions. [2025-03-04 10:01:15,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2025-03-04 10:01:15,392 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 292 flow. Second operand 11 states and 450 transitions. [2025-03-04 10:01:15,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 452 flow [2025-03-04 10:01:15,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 95 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:01:15,394 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 314 flow [2025-03-04 10:01:15,394 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} [2025-03-04 10:01:15,394 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-03-04 10:01:15,395 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 314 flow [2025-03-04 10:01:15,395 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) [2025-03-04 10:01:15,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:15,395 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:15,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 10:01:15,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:15,596 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:15,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2009558832, now seen corresponding path program 1 times [2025-03-04 10:01:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:15,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850051892] [2025-03-04 10:01:15,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:15,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:15,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:15,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:15,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 10:01:15,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 10:01:15,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 10:01:15,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:15,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:15,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 10:01:15,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:15,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 10:01:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:15,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:15,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850051892] [2025-03-04 10:01:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850051892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:15,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:01:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53434707] [2025-03-04 10:01:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:15,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:01:15,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:15,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:01:15,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:01:15,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2025-03-04 10:01:15,921 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) [2025-03-04 10:01:15,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:15,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2025-03-04 10:01:15,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:16,095 INFO L124 PetriNetUnfolderBase]: 390/878 cut-off events. [2025-03-04 10:01:16,095 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-04 10:01:16,097 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. [2025-03-04 10:01:16,099 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 35 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2025-03-04 10:01:16,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 82 transitions, 398 flow [2025-03-04 10:01:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:01:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:01:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2025-03-04 10:01:16,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6794117647058824 [2025-03-04 10:01:16,101 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 314 flow. Second operand 4 states and 231 transitions. [2025-03-04 10:01:16,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 82 transitions, 398 flow [2025-03-04 10:01:16,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 82 transitions, 376 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-03-04 10:01:16,103 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 306 flow [2025-03-04 10:01:16,103 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} [2025-03-04 10:01:16,105 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2025-03-04 10:01:16,105 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 306 flow [2025-03-04 10:01:16,105 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) [2025-03-04 10:01:16,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:16,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:16,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 10:01:16,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:16,306 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:16,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2009558833, now seen corresponding path program 1 times [2025-03-04 10:01:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821990164] [2025-03-04 10:01:16,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:16,308 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:16,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 10:01:16,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 10:01:16,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 10:01:16,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:16,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:16,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 10:01:16,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:16,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:01:16,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821990164] [2025-03-04 10:01:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821990164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:01:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:01:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:01:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852390941] [2025-03-04 10:01:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:01:16,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:01:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:16,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:01:16,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:01:16,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2025-03-04 10:01:16,628 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) [2025-03-04 10:01:16,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:16,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2025-03-04 10:01:16,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:16,817 INFO L124 PetriNetUnfolderBase]: 390/870 cut-off events. [2025-03-04 10:01:16,818 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-03-04 10:01:16,819 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. [2025-03-04 10:01:16,821 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 38 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2025-03-04 10:01:16,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 80 transitions, 400 flow [2025-03-04 10:01:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:01:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:01:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2025-03-04 10:01:16,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2025-03-04 10:01:16,826 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 306 flow. Second operand 5 states and 264 transitions. [2025-03-04 10:01:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 80 transitions, 400 flow [2025-03-04 10:01:16,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 80 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 10:01:16,827 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 306 flow [2025-03-04 10:01:16,827 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} [2025-03-04 10:01:16,828 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2025-03-04 10:01:16,828 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 306 flow [2025-03-04 10:01:16,828 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) [2025-03-04 10:01:16,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:16,828 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:16,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 10:01:17,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:17,029 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:17,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash 215680999, now seen corresponding path program 1 times [2025-03-04 10:01:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:17,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272075990] [2025-03-04 10:01:17,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:17,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:17,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:17,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 10:01:17,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 10:01:17,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:01:17,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:17,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:17,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 10:01:17,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:17,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:01:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:17,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:17,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272075990] [2025-03-04 10:01:17,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272075990] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:01:17,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 10:01:17,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2025-03-04 10:01:17,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494634647] [2025-03-04 10:01:17,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 10:01:17,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:01:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:17,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:01:17,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:01:17,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 85 [2025-03-04 10:01:17,270 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) [2025-03-04 10:01:17,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:17,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 85 [2025-03-04 10:01:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:17,535 INFO L124 PetriNetUnfolderBase]: 390/920 cut-off events. [2025-03-04 10:01:17,535 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-03-04 10:01:17,536 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. [2025-03-04 10:01:17,538 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 52 selfloop transitions, 11 changer transitions 0/99 dead transitions. [2025-03-04 10:01:17,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 99 transitions, 560 flow [2025-03-04 10:01:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:01:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:01:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 364 transitions. [2025-03-04 10:01:17,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7137254901960784 [2025-03-04 10:01:17,540 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 306 flow. Second operand 6 states and 364 transitions. [2025-03-04 10:01:17,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 99 transitions, 560 flow [2025-03-04 10:01:17,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 506 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 10:01:17,542 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 370 flow [2025-03-04 10:01:17,542 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} [2025-03-04 10:01:17,543 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2025-03-04 10:01:17,543 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 370 flow [2025-03-04 10:01:17,543 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) [2025-03-04 10:01:17,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:17,543 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:17,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 10:01:17,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:17,743 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:17,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash 108031914, now seen corresponding path program 1 times [2025-03-04 10:01:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081879251] [2025-03-04 10:01:17,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:17,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:17,746 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:17,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 10:01:17,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 10:01:17,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:01:17,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:17,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:17,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 10:01:17,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:18,088 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 [2025-03-04 10:01:18,138 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2025-03-04 10:01:18,138 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 [2025-03-04 10:01:18,184 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 [2025-03-04 10:01:18,224 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 [2025-03-04 10:01:18,280 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 28 treesize of output 21 [2025-03-04 10:01:18,354 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 [2025-03-04 10:01:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:18,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:01:18,461 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 [2025-03-04 10:01:19,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:19,068 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 [2025-03-04 10:01:19,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:19,088 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 [2025-03-04 10:01:19,094 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 [2025-03-04 10:01:44,556 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2025-03-04 10:01:44,557 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 [2025-03-04 10:01:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-04 10:01:44,769 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 10:01:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081879251] [2025-03-04 10:01:44,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081879251] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:01:44,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 10:01:44,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2025-03-04 10:01:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629085642] [2025-03-04 10:01:44,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 10:01:44,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 10:01:44,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 10:01:44,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 10:01:44,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=313, Unknown=13, NotChecked=36, Total=420 [2025-03-04 10:01:49,780 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] [2025-03-04 10:01:51,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-04 10:01:55,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-03-04 10:01:56,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 85 [2025-03-04 10:01:56,047 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) [2025-03-04 10:01:56,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:01:56,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 85 [2025-03-04 10:01:56,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:01:58,431 INFO L124 PetriNetUnfolderBase]: 1518/2683 cut-off events. [2025-03-04 10:01:58,431 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2025-03-04 10:01:58,436 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. [2025-03-04 10:01:58,445 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 59 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2025-03-04 10:01:58,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 96 transitions, 582 flow [2025-03-04 10:01:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 10:01:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 10:01:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-03-04 10:01:58,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20452488687782805 [2025-03-04 10:01:58,447 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 370 flow. Second operand 13 states and 226 transitions. [2025-03-04 10:01:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 96 transitions, 582 flow [2025-03-04 10:01:58,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 96 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-04 10:01:58,449 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 434 flow [2025-03-04 10:01:58,449 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} [2025-03-04 10:01:58,449 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2025-03-04 10:01:58,450 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 434 flow [2025-03-04 10:01:58,450 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) [2025-03-04 10:01:58,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:01:58,450 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:01:58,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 10:01:58,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:58,650 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2025-03-04 10:01:58,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:01:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 108031915, now seen corresponding path program 1 times [2025-03-04 10:01:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 10:01:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916451603] [2025-03-04 10:01:58,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:01:58,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:01:58,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:01:58,653 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 10:01:58,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 10:01:58,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 10:01:58,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:01:58,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:01:58,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:01:58,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-04 10:01:58,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:01:58,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 10:01:59,067 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 [2025-03-04 10:01:59,073 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 [2025-03-04 10:01:59,109 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2025-03-04 10:01:59,110 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 [2025-03-04 10:01:59,126 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 10:01:59,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 10:01:59,158 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 [2025-03-04 10:01:59,168 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 [2025-03-04 10:01:59,204 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 [2025-03-04 10:01:59,213 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 [2025-03-04 10:01:59,229 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 [2025-03-04 10:01:59,233 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 16 treesize of output 11 [2025-03-04 10:01:59,297 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 [2025-03-04 10:01:59,301 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 [2025-03-04 10:01:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:01:59,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:01:59,487 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 [2025-03-04 10:01:59,523 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$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_679) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_679) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_678) |c_~#c~0.base|) .cse1)))))) is different from false [2025-03-04 10:01:59,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,705 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 [2025-03-04 10:01:59,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,727 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 [2025-03-04 10:01:59,737 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 [2025-03-04 10:01:59,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,790 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 [2025-03-04 10:01:59,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,797 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 [2025-03-04 10:01:59,800 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 10:01:59,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,817 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 [2025-03-04 10:01:59,820 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 10:01:59,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:01:59,836 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 [2025-03-04 10:02:02,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 10:02:02,838 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