./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-2_1-container_of.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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:11:27,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:11:27,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:11:27,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:11:27,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:11:27,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:11:27,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:11:27,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:11:27,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:11:27,599 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:11:27,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:11:27,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:11:27,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:11:27,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:11:27,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:11:27,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:11:27,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:11:27,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:27,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:11:27,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:11:27,603 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2025-03-09 01:11:28,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:11:28,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:11:28,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:11:28,051 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:11:28,051 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:11:28,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-09 01:11:29,293 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d89ee1bc/f58af1ad32364fffb0d3bec7da57d4f2/FLAG81b68775b [2025-03-09 01:11:29,592 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:11:29,593 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-09 01:11:29,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d89ee1bc/f58af1ad32364fffb0d3bec7da57d4f2/FLAG81b68775b [2025-03-09 01:11:29,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d89ee1bc/f58af1ad32364fffb0d3bec7da57d4f2 [2025-03-09 01:11:29,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:11:29,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:11:29,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:29,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:11:29,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:11:29,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:29" (1/1) ... [2025-03-09 01:11:29,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420dc8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:29, skipping insertion in model container [2025-03-09 01:11:29,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:29" (1/1) ... [2025-03-09 01:11:29,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:29,985 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:29,999 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:30,007 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:30,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:30,039 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 01:11:30,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ce1ac7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:30, skipping insertion in model container [2025-03-09 01:11:30,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:30,042 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 01:11:30,043 INFO L158 Benchmark]: Toolchain (without parser) took 403.84ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 92.0MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:30,043 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:11:30,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.05ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 92.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:30,049 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.05ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 92.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: 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/ldv-races/race-2_1-container_of.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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:11:31,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:11:31,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 01:11:31,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:11:31,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:11:31,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:11:31,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:11:31,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:11:31,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:11:31,876 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:11:31,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:11:31,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:11:31,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:11:31,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:11:31,877 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:11:31,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:11:31,878 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:11:31,879 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:11:31,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:11:31,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:11:31,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:11:31,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:11:31,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:31,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:11:31,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:11:31,881 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2025-03-09 01:11:32,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:11:32,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:11:32,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:11:32,150 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:11:32,152 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:11:32,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-09 01:11:33,356 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df7019b4/c5b9d69917a64617af05ae4a72c31135/FLAG55aced46c [2025-03-09 01:11:33,651 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:11:33,652 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-09 01:11:33,674 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df7019b4/c5b9d69917a64617af05ae4a72c31135/FLAG55aced46c [2025-03-09 01:11:33,934 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df7019b4/c5b9d69917a64617af05ae4a72c31135 [2025-03-09 01:11:33,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:11:33,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:11:33,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:33,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:11:33,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:11:33,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:33" (1/1) ... [2025-03-09 01:11:33,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:33, skipping insertion in model container [2025-03-09 01:11:33,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:33" (1/1) ... [2025-03-09 01:11:33,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:34,212 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,221 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,228 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:34,257 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 01:11:34,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:34,312 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,314 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,319 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:11:34,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:34,330 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:11:34,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:34,428 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:11:34,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34 WrapperNode [2025-03-09 01:11:34,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:34,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:34,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:11:34,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:11:34,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,469 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 142 [2025-03-09 01:11:34,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:34,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:11:34,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:11:34,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:11:34,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,503 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 2, 6]. [2025-03-09 01:11:34,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,520 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:11:34,539 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:11:34,539 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:11:34,539 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:11:34,543 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (1/1) ... [2025-03-09 01:11:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:34,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:34,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:11:34,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:11:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-09 01:11:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 01:11:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 01:11:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 01:11:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:11:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:11:34,594 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:11:34,855 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:11:34,857 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:11:35,288 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:11:35,288 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:11:35,406 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:11:35,407 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:11:35,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:35 BoogieIcfgContainer [2025-03-09 01:11:35,407 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:11:35,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:11:35,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:11:35,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:11:35,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:11:33" (1/3) ... [2025-03-09 01:11:35,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55eb158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:35, skipping insertion in model container [2025-03-09 01:11:35,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:34" (2/3) ... [2025-03-09 01:11:35,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55eb158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:35, skipping insertion in model container [2025-03-09 01:11:35,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:35" (3/3) ... [2025-03-09 01:11:35,416 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2025-03-09 01:11:35,426 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:11:35,427 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_1-container_of.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-03-09 01:11:35,427 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:11:35,508 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:11:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2025-03-09 01:11:35,591 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2025-03-09 01:11:35,596 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:11:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 18/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 530 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2025-03-09 01:11:35,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2025-03-09 01:11:35,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2025-03-09 01:11:35,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:11:35,617 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;@2f6fde2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:11:35,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-09 01:11:35,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:11:35,637 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-09 01:11:35,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:11:35,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:35,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:11:35,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:35,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 496276, now seen corresponding path program 1 times [2025-03-09 01:11:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705882402] [2025-03-09 01:11:35,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:35,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:35,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:35,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:11:35,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:11:35,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:11:35,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:35,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:35,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:11:35,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:35,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 01:11:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:35,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:35,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705882402] [2025-03-09 01:11:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705882402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217010814] [2025-03-09 01:11:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:35,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:35,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:35,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:35,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:35,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-09 01:11:35,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:35,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:35,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-09 01:11:35,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:36,382 INFO L124 PetriNetUnfolderBase]: 707/2028 cut-off events. [2025-03-09 01:11:36,382 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-09 01:11:36,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 2028 events. 707/2028 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15947 event pairs, 95 based on Foata normal form. 156/1875 useless extension candidates. Maximal degree in co-relation 3071. Up to 1002 conditions per place. [2025-03-09 01:11:36,398 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2025-03-09 01:11:36,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2025-03-09 01:11:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-03-09 01:11:36,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 01:11:36,409 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2025-03-09 01:11:36,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2025-03-09 01:11:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:36,416 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2025-03-09 01:11:36,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2025-03-09 01:11:36,421 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2025-03-09 01:11:36,421 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2025-03-09 01:11:36,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:36,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:36,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:11:36,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 01:11:36,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:36,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:36,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 496277, now seen corresponding path program 1 times [2025-03-09 01:11:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503597261] [2025-03-09 01:11:36,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:36,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:36,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:36,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:36,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:11:36,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:11:36,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:11:36,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:36,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:36,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 01:11:36,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:36,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:36,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:36,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503597261] [2025-03-09 01:11:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503597261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877155750] [2025-03-09 01:11:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:36,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:36,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:36,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:36,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:36,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2025-03-09 01:11:36,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:36,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:36,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2025-03-09 01:11:36,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:37,141 INFO L124 PetriNetUnfolderBase]: 707/2024 cut-off events. [2025-03-09 01:11:37,142 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-09 01:11:37,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 2024 events. 707/2024 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15854 event pairs, 95 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 488. Up to 1002 conditions per place. [2025-03-09 01:11:37,156 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2025-03-09 01:11:37,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2025-03-09 01:11:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2025-03-09 01:11:37,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-03-09 01:11:37,159 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2025-03-09 01:11:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2025-03-09 01:11:37,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:37,161 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2025-03-09 01:11:37,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2025-03-09 01:11:37,162 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-03-09 01:11:37,162 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2025-03-09 01:11:37,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:37,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:37,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 01:11:37,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 01:11:37,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:37,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:37,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash 15383871, now seen corresponding path program 1 times [2025-03-09 01:11:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938347592] [2025-03-09 01:11:37,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:37,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:37,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:37,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:37,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 01:11:37,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 01:11:37,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 01:11:37,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:37,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:37,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:11:37,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:37,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:37,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938347592] [2025-03-09 01:11:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938347592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978364215] [2025-03-09 01:11:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:37,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:37,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:37,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:37,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-03-09 01:11:37,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:37,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:37,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-03-09 01:11:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:37,832 INFO L124 PetriNetUnfolderBase]: 706/1755 cut-off events. [2025-03-09 01:11:37,833 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-09 01:11:37,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 1755 events. 706/1755 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12388 event pairs, 645 based on Foata normal form. 1/1478 useless extension candidates. Maximal degree in co-relation 883. Up to 1092 conditions per place. [2025-03-09 01:11:37,843 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2025-03-09 01:11:37,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 342 flow [2025-03-09 01:11:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2025-03-09 01:11:37,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2025-03-09 01:11:37,846 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 262 transitions. [2025-03-09 01:11:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 342 flow [2025-03-09 01:11:37,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:37,849 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 214 flow [2025-03-09 01:11:37,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2025-03-09 01:11:37,850 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-03-09 01:11:37,850 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 214 flow [2025-03-09 01:11:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:37,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:37,850 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:37,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 01:11:38,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:38,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:38,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash 610391618, now seen corresponding path program 1 times [2025-03-09 01:11:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:38,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242213446] [2025-03-09 01:11:38,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:38,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:38,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:38,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 01:11:38,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 01:11:38,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 01:11:38,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:38,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:38,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:11:38,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:38,167 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:38,168 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:38,168 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:38,175 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 32 treesize of output 41 [2025-03-09 01:11:38,227 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:38,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:38,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 73 [2025-03-09 01:11:38,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:38,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137 treesize of output 53 [2025-03-09 01:11:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:38,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:38,357 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242213446] [2025-03-09 01:11:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242213446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:38,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:38,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573578260] [2025-03-09 01:11:38,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:38,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:38,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:38,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:38,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:38,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-09 01:11:38,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:38,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:38,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-09 01:11:38,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:39,204 INFO L124 PetriNetUnfolderBase]: 1153/2678 cut-off events. [2025-03-09 01:11:39,204 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-03-09 01:11:39,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4637 conditions, 2678 events. 1153/2678 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 19520 event pairs, 684 based on Foata normal form. 1/2357 useless extension candidates. Maximal degree in co-relation 4313. Up to 1845 conditions per place. [2025-03-09 01:11:39,216 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 52 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2025-03-09 01:11:39,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 347 flow [2025-03-09 01:11:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2025-03-09 01:11:39,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-03-09 01:11:39,218 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 214 flow. Second operand 5 states and 380 transitions. [2025-03-09 01:11:39,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 347 flow [2025-03-09 01:11:39,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 343 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:39,223 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 236 flow [2025-03-09 01:11:39,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2025-03-09 01:11:39,224 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-03-09 01:11:39,224 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 236 flow [2025-03-09 01:11:39,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:39,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:39,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:39,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:11:39,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:39,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:39,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -687764489, now seen corresponding path program 1 times [2025-03-09 01:11:39,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583116834] [2025-03-09 01:11:39,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:39,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:39,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 01:11:39,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 01:11:39,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:11:39,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:39,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:39,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:11:39,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:39,553 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:39,554 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 32 treesize of output 41 [2025-03-09 01:11:39,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 45 [2025-03-09 01:11:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:39,722 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:39,722 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583116834] [2025-03-09 01:11:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583116834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:39,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:39,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734761441] [2025-03-09 01:11:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:39,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:39,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:39,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:39,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-03-09 01:11:39,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:39,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:39,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-03-09 01:11:39,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:40,533 INFO L124 PetriNetUnfolderBase]: 1321/2967 cut-off events. [2025-03-09 01:11:40,534 INFO L125 PetriNetUnfolderBase]: For 244/250 co-relation queries the response was YES. [2025-03-09 01:11:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5453 conditions, 2967 events. 1321/2967 cut-off events. For 244/250 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 21344 event pairs, 796 based on Foata normal form. 6/2542 useless extension candidates. Maximal degree in co-relation 2277. Up to 2115 conditions per place. [2025-03-09 01:11:40,553 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 54 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-03-09 01:11:40,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 371 flow [2025-03-09 01:11:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2025-03-09 01:11:40,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543939393939394 [2025-03-09 01:11:40,555 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 236 flow. Second operand 5 states and 359 transitions. [2025-03-09 01:11:40,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 371 flow [2025-03-09 01:11:40,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:11:40,558 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 240 flow [2025-03-09 01:11:40,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2025-03-09 01:11:40,558 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2025-03-09 01:11:40,558 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 240 flow [2025-03-09 01:11:40,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:40,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:40,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:40,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:11:40,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:40,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:40,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash -777837708, now seen corresponding path program 1 times [2025-03-09 01:11:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:40,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139344279] [2025-03-09 01:11:40,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:40,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:40,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:40,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 01:11:40,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:40,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:40,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:40,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:40,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:11:40,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:40,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 01:11:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:40,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:40,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139344279] [2025-03-09 01:11:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139344279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19159885] [2025-03-09 01:11:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:40,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:40,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:40,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:41,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2025-03-09 01:11:41,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:41,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:41,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2025-03-09 01:11:41,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:41,338 INFO L124 PetriNetUnfolderBase]: 954/2215 cut-off events. [2025-03-09 01:11:41,338 INFO L125 PetriNetUnfolderBase]: For 68/76 co-relation queries the response was YES. [2025-03-09 01:11:41,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3937 conditions, 2215 events. 954/2215 cut-off events. For 68/76 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15389 event pairs, 736 based on Foata normal form. 0/2032 useless extension candidates. Maximal degree in co-relation 1642. Up to 1362 conditions per place. [2025-03-09 01:11:41,349 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-03-09 01:11:41,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 362 flow [2025-03-09 01:11:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2025-03-09 01:11:41,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-09 01:11:41,351 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 240 flow. Second operand 3 states and 246 transitions. [2025-03-09 01:11:41,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 362 flow [2025-03-09 01:11:41,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:41,354 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 222 flow [2025-03-09 01:11:41,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2025-03-09 01:11:41,355 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -25 predicate places. [2025-03-09 01:11:41,356 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 222 flow [2025-03-09 01:11:41,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:41,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:41,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:41,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 01:11:41,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:41,560 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:41,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -777837707, now seen corresponding path program 1 times [2025-03-09 01:11:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116159122] [2025-03-09 01:11:41,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:41,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:41,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 01:11:41,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:41,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:41,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:41,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:41,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:11:41,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:41,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:41,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:41,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116159122] [2025-03-09 01:11:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116159122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:41,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:41,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876726408] [2025-03-09 01:11:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:41,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:41,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:41,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:41,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-09 01:11:41,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:41,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:41,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-09 01:11:41,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:42,091 INFO L124 PetriNetUnfolderBase]: 816/1962 cut-off events. [2025-03-09 01:11:42,091 INFO L125 PetriNetUnfolderBase]: For 87/95 co-relation queries the response was YES. [2025-03-09 01:11:42,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 1962 events. 816/1962 cut-off events. For 87/95 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13524 event pairs, 531 based on Foata normal form. 88/1861 useless extension candidates. Maximal degree in co-relation 2843. Up to 992 conditions per place. [2025-03-09 01:11:42,099 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2025-03-09 01:11:42,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 390 flow [2025-03-09 01:11:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2025-03-09 01:11:42,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2025-03-09 01:11:42,101 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 222 flow. Second operand 3 states and 261 transitions. [2025-03-09 01:11:42,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 390 flow [2025-03-09 01:11:42,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:42,104 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 235 flow [2025-03-09 01:11:42,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2025-03-09 01:11:42,105 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-03-09 01:11:42,105 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 235 flow [2025-03-09 01:11:42,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:42,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:42,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:42,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 01:11:42,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:42,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:42,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1734549249, now seen corresponding path program 1 times [2025-03-09 01:11:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806030808] [2025-03-09 01:11:42,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:42,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:42,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:42,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:42,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 01:11:42,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:11:42,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:11:42,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:42,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:42,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:11:42,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:42,455 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:42,455 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806030808] [2025-03-09 01:11:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806030808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113332237] [2025-03-09 01:11:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:42,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:11:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:42,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:11:42,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:11:42,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2025-03-09 01:11:42,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:42,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:42,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2025-03-09 01:11:42,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:43,318 INFO L124 PetriNetUnfolderBase]: 1177/2702 cut-off events. [2025-03-09 01:11:43,318 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-03-09 01:11:43,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 2702 events. 1177/2702 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19263 event pairs, 139 based on Foata normal form. 62/2646 useless extension candidates. Maximal degree in co-relation 3215. Up to 1078 conditions per place. [2025-03-09 01:11:43,329 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 102 selfloop transitions, 15 changer transitions 1/162 dead transitions. [2025-03-09 01:11:43,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 626 flow [2025-03-09 01:11:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:11:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:11:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2025-03-09 01:11:43,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928030303030303 [2025-03-09 01:11:43,334 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 235 flow. Second operand 8 states and 626 transitions. [2025-03-09 01:11:43,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 626 flow [2025-03-09 01:11:43,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:11:43,339 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 339 flow [2025-03-09 01:11:43,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2025-03-09 01:11:43,340 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2025-03-09 01:11:43,340 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 339 flow [2025-03-09 01:11:43,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:43,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:43,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:43,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 01:11:43,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:43,542 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:43,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1734549250, now seen corresponding path program 1 times [2025-03-09 01:11:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983214057] [2025-03-09 01:11:43,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:43,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:43,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:43,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:43,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 01:11:43,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:11:43,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:11:43,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:43,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:43,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 01:11:43,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:43,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:43,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:43,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983214057] [2025-03-09 01:11:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983214057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143458957] [2025-03-09 01:11:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:43,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:43,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:43,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:44,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2025-03-09 01:11:44,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:44,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:44,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2025-03-09 01:11:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:44,514 INFO L124 PetriNetUnfolderBase]: 914/2228 cut-off events. [2025-03-09 01:11:44,514 INFO L125 PetriNetUnfolderBase]: For 937/1023 co-relation queries the response was YES. [2025-03-09 01:11:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 2228 events. 914/2228 cut-off events. For 937/1023 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15873 event pairs, 148 based on Foata normal form. 257/2410 useless extension candidates. Maximal degree in co-relation 4098. Up to 1074 conditions per place. [2025-03-09 01:11:44,521 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 89 selfloop transitions, 12 changer transitions 2/154 dead transitions. [2025-03-09 01:11:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 653 flow [2025-03-09 01:11:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:11:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:11:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2025-03-09 01:11:44,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6201298701298701 [2025-03-09 01:11:44,522 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 339 flow. Second operand 7 states and 573 transitions. [2025-03-09 01:11:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 653 flow [2025-03-09 01:11:44,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 653 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:11:44,527 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 399 flow [2025-03-09 01:11:44,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-03-09 01:11:44,528 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2025-03-09 01:11:44,528 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 399 flow [2025-03-09 01:11:44,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:44,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:44,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:44,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 01:11:44,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:44,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:44,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1435545917, now seen corresponding path program 1 times [2025-03-09 01:11:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:44,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903795700] [2025-03-09 01:11:44,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:44,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:44,731 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:44,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 01:11:44,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:11:44,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:11:44,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:44,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:44,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:11:44,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:44,874 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:44,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903795700] [2025-03-09 01:11:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903795700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:44,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:44,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811650485] [2025-03-09 01:11:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:44,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:11:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:44,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:11:44,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:11:45,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2025-03-09 01:11:45,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2025-03-09 01:11:45,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:45,822 INFO L124 PetriNetUnfolderBase]: 1336/3053 cut-off events. [2025-03-09 01:11:45,822 INFO L125 PetriNetUnfolderBase]: For 2522/2672 co-relation queries the response was YES. [2025-03-09 01:11:45,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 3053 events. 1336/3053 cut-off events. For 2522/2672 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 22233 event pairs, 340 based on Foata normal form. 98/3084 useless extension candidates. Maximal degree in co-relation 5928. Up to 1093 conditions per place. [2025-03-09 01:11:45,833 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 113 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2025-03-09 01:11:45,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 179 transitions, 906 flow [2025-03-09 01:11:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:11:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:11:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 630 transitions. [2025-03-09 01:11:45,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2025-03-09 01:11:45,835 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 399 flow. Second operand 8 states and 630 transitions. [2025-03-09 01:11:45,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 179 transitions, 906 flow [2025-03-09 01:11:45,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 179 transitions, 873 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 01:11:45,842 INFO L231 Difference]: Finished difference. Result has 123 places, 118 transitions, 527 flow [2025-03-09 01:11:45,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=527, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2025-03-09 01:11:45,843 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 1 predicate places. [2025-03-09 01:11:45,843 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 527 flow [2025-03-09 01:11:45,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:45,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:45,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:45,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 01:11:46,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:46,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:46,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1435545916, now seen corresponding path program 1 times [2025-03-09 01:11:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543328714] [2025-03-09 01:11:46,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:46,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:46,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 01:11:46,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:11:46,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:11:46,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:46,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:46,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 01:11:46,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:46,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:46,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:46,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:46,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543328714] [2025-03-09 01:11:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543328714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978344460] [2025-03-09 01:11:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:46,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:46,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:46,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:46,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2025-03-09 01:11:46,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 527 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:46,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:46,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2025-03-09 01:11:46,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:46,971 INFO L124 PetriNetUnfolderBase]: 1002/2492 cut-off events. [2025-03-09 01:11:46,971 INFO L125 PetriNetUnfolderBase]: For 2805/3027 co-relation queries the response was YES. [2025-03-09 01:11:46,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 2492 events. 1002/2492 cut-off events. For 2805/3027 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18411 event pairs, 160 based on Foata normal form. 330/2781 useless extension candidates. Maximal degree in co-relation 5334. Up to 1228 conditions per place. [2025-03-09 01:11:46,980 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 98 selfloop transitions, 17 changer transitions 1/169 dead transitions. [2025-03-09 01:11:46,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 907 flow [2025-03-09 01:11:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:11:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:11:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2025-03-09 01:11:46,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222943722943723 [2025-03-09 01:11:46,985 INFO L175 Difference]: Start difference. First operand has 123 places, 118 transitions, 527 flow. Second operand 7 states and 575 transitions. [2025-03-09 01:11:46,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 907 flow [2025-03-09 01:11:46,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 904 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:11:46,991 INFO L231 Difference]: Finished difference. Result has 131 places, 121 transitions, 609 flow [2025-03-09 01:11:46,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=131, PETRI_TRANSITIONS=121} [2025-03-09 01:11:46,991 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 9 predicate places. [2025-03-09 01:11:46,991 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 121 transitions, 609 flow [2025-03-09 01:11:46,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:46,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:46,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:47,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 01:11:47,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:47,192 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1343187058, now seen corresponding path program 1 times [2025-03-09 01:11:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216741270] [2025-03-09 01:11:47,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:47,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:47,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 01:11:47,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:11:47,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:11:47,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:47,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:47,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:11:47,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:47,314 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:47,315 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:47,315 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:47,316 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 32 treesize of output 41 [2025-03-09 01:11:47,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:47,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 53 [2025-03-09 01:11:47,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:47,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2025-03-09 01:11:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:47,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:47,399 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:47,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216741270] [2025-03-09 01:11:47,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216741270] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:47,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584699309] [2025-03-09 01:11:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:47,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:47,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:47,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:47,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-03-09 01:11:47,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 121 transitions, 609 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:47,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:47,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-03-09 01:11:47,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:49,019 INFO L124 PetriNetUnfolderBase]: 1987/3904 cut-off events. [2025-03-09 01:11:49,020 INFO L125 PetriNetUnfolderBase]: For 6252/6562 co-relation queries the response was YES. [2025-03-09 01:11:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10660 conditions, 3904 events. 1987/3904 cut-off events. For 6252/6562 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 26660 event pairs, 607 based on Foata normal form. 35/3762 useless extension candidates. Maximal degree in co-relation 9786. Up to 1638 conditions per place. [2025-03-09 01:11:49,042 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 107 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2025-03-09 01:11:49,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 191 transitions, 1202 flow [2025-03-09 01:11:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:11:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:11:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2025-03-09 01:11:49,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2025-03-09 01:11:49,046 INFO L175 Difference]: Start difference. First operand has 131 places, 121 transitions, 609 flow. Second operand 7 states and 536 transitions. [2025-03-09 01:11:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 191 transitions, 1202 flow [2025-03-09 01:11:49,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 191 transitions, 1173 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 01:11:49,061 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 866 flow [2025-03-09 01:11:49,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=866, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2025-03-09 01:11:49,062 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2025-03-09 01:11:49,062 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 866 flow [2025-03-09 01:11:49,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:49,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:49,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:49,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 01:11:49,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:49,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:49,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2065794313, now seen corresponding path program 1 times [2025-03-09 01:11:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716266581] [2025-03-09 01:11:49,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:49,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:49,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:49,270 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:49,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 01:11:49,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:11:49,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:11:49,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:49,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:49,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:11:49,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:49,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:49,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:11:49,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 01:11:49,609 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:11:49,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 01:11:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:49,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:49,631 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716266581] [2025-03-09 01:11:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716266581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:11:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214882046] [2025-03-09 01:11:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:49,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:11:49,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:49,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:11:49,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:11:50,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-09 01:11:50,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 866 flow. Second operand has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:50,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:50,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-09 01:11:50,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:51,126 INFO L124 PetriNetUnfolderBase]: 2127/4479 cut-off events. [2025-03-09 01:11:51,126 INFO L125 PetriNetUnfolderBase]: For 10613/10870 co-relation queries the response was YES. [2025-03-09 01:11:51,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14514 conditions, 4479 events. 2127/4479 cut-off events. For 10613/10870 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33908 event pairs, 393 based on Foata normal form. 72/4479 useless extension candidates. Maximal degree in co-relation 12972. Up to 1804 conditions per place. [2025-03-09 01:11:51,145 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 144 selfloop transitions, 24 changer transitions 0/216 dead transitions. [2025-03-09 01:11:51,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 216 transitions, 1536 flow [2025-03-09 01:11:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:11:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:11:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2025-03-09 01:11:51,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5673400673400674 [2025-03-09 01:11:51,152 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 866 flow. Second operand 9 states and 674 transitions. [2025-03-09 01:11:51,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 216 transitions, 1536 flow [2025-03-09 01:11:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 216 transitions, 1511 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:51,174 INFO L231 Difference]: Finished difference. Result has 141 places, 139 transitions, 889 flow [2025-03-09 01:11:51,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=889, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2025-03-09 01:11:51,174 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 19 predicate places. [2025-03-09 01:11:51,174 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 889 flow [2025-03-09 01:11:51,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:51,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:51,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:51,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 01:11:51,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:51,375 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:51,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1958404243, now seen corresponding path program 1 times [2025-03-09 01:11:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:51,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503588090] [2025-03-09 01:11:51,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:51,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:51,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:51,378 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:51,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 01:11:51,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:11:51,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:11:51,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:51,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:51,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:11:51,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:51,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:11:51,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 01:11:51,647 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:11:51,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 01:11:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:51,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:51,664 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503588090] [2025-03-09 01:11:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503588090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:11:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780375455] [2025-03-09 01:11:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:51,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:11:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:51,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:11:51,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:11:52,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-09 01:11:52,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:52,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:52,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-09 01:11:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:53,142 INFO L124 PetriNetUnfolderBase]: 2434/5027 cut-off events. [2025-03-09 01:11:53,142 INFO L125 PetriNetUnfolderBase]: For 12805/13145 co-relation queries the response was YES. [2025-03-09 01:11:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16490 conditions, 5027 events. 2434/5027 cut-off events. For 12805/13145 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 38779 event pairs, 704 based on Foata normal form. 92/5044 useless extension candidates. Maximal degree in co-relation 13789. Up to 1820 conditions per place. [2025-03-09 01:11:53,165 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 149 selfloop transitions, 24 changer transitions 0/219 dead transitions. [2025-03-09 01:11:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 219 transitions, 1599 flow [2025-03-09 01:11:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:11:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:11:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2025-03-09 01:11:53,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5715488215488216 [2025-03-09 01:11:53,172 INFO L175 Difference]: Start difference. First operand has 141 places, 139 transitions, 889 flow. Second operand 9 states and 679 transitions. [2025-03-09 01:11:53,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 219 transitions, 1599 flow [2025-03-09 01:11:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 219 transitions, 1541 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-09 01:11:53,195 INFO L231 Difference]: Finished difference. Result has 139 places, 137 transitions, 887 flow [2025-03-09 01:11:53,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=139, PETRI_TRANSITIONS=137} [2025-03-09 01:11:53,195 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2025-03-09 01:11:53,195 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 137 transitions, 887 flow [2025-03-09 01:11:53,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:53,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:53,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:53,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 01:11:53,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:53,396 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:53,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1294545887, now seen corresponding path program 1 times [2025-03-09 01:11:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417727895] [2025-03-09 01:11:53,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:53,399 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:53,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 01:11:53,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 01:11:53,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:11:53,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:53,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:53,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:11:53,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:53,516 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:53,516 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:53,517 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:53,518 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 32 treesize of output 41 [2025-03-09 01:11:53,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:53,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2025-03-09 01:11:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:53,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:53,603 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417727895] [2025-03-09 01:11:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417727895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318123723] [2025-03-09 01:11:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:53,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:53,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:53,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:53,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-03-09 01:11:53,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 137 transitions, 887 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:53,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:53,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-03-09 01:11:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:55,428 INFO L124 PetriNetUnfolderBase]: 2959/5700 cut-off events. [2025-03-09 01:11:55,428 INFO L125 PetriNetUnfolderBase]: For 17454/17946 co-relation queries the response was YES. [2025-03-09 01:11:55,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 5700 events. 2959/5700 cut-off events. For 17454/17946 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 41814 event pairs, 1047 based on Foata normal form. 187/5826 useless extension candidates. Maximal degree in co-relation 17374. Up to 2612 conditions per place. [2025-03-09 01:11:55,458 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 114 selfloop transitions, 67 changer transitions 0/216 dead transitions. [2025-03-09 01:11:55,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 216 transitions, 1767 flow [2025-03-09 01:11:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:11:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:11:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2025-03-09 01:11:55,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2025-03-09 01:11:55,464 INFO L175 Difference]: Start difference. First operand has 139 places, 137 transitions, 887 flow. Second operand 7 states and 536 transitions. [2025-03-09 01:11:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 216 transitions, 1767 flow [2025-03-09 01:11:55,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 216 transitions, 1716 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:11:55,516 INFO L231 Difference]: Finished difference. Result has 144 places, 166 transitions, 1398 flow [2025-03-09 01:11:55,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1398, PETRI_PLACES=144, PETRI_TRANSITIONS=166} [2025-03-09 01:11:55,517 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 22 predicate places. [2025-03-09 01:11:55,517 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 166 transitions, 1398 flow [2025-03-09 01:11:55,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:55,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:55,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:55,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 01:11:55,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:55,718 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:55,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1476164229, now seen corresponding path program 1 times [2025-03-09 01:11:55,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:55,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552300135] [2025-03-09 01:11:55,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:55,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:55,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 01:11:55,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:11:55,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:11:55,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:55,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:55,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:11:55,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:55,916 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_81| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81|)))) is different from true [2025-03-09 01:11:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:55,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:55,921 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:55,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552300135] [2025-03-09 01:11:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552300135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:55,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:55,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:11:55,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397309319] [2025-03-09 01:11:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:55,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:55,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:55,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-09 01:11:56,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2025-03-09 01:11:56,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 166 transitions, 1398 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:56,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:56,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2025-03-09 01:11:56,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:56,975 INFO L124 PetriNetUnfolderBase]: 4214/7729 cut-off events. [2025-03-09 01:11:56,975 INFO L125 PetriNetUnfolderBase]: For 35236/35242 co-relation queries the response was YES. [2025-03-09 01:11:56,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31853 conditions, 7729 events. 4214/7729 cut-off events. For 35236/35242 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 57302 event pairs, 1830 based on Foata normal form. 3/7708 useless extension candidates. Maximal degree in co-relation 26797. Up to 3711 conditions per place. [2025-03-09 01:11:57,011 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 150 selfloop transitions, 37 changer transitions 4/216 dead transitions. [2025-03-09 01:11:57,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 216 transitions, 2092 flow [2025-03-09 01:11:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2025-03-09 01:11:57,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-03-09 01:11:57,013 INFO L175 Difference]: Start difference. First operand has 144 places, 166 transitions, 1398 flow. Second operand 5 states and 310 transitions. [2025-03-09 01:11:57,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 216 transitions, 2092 flow [2025-03-09 01:11:57,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 216 transitions, 2040 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-03-09 01:11:57,154 INFO L231 Difference]: Finished difference. Result has 151 places, 184 transitions, 1632 flow [2025-03-09 01:11:57,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1632, PETRI_PLACES=151, PETRI_TRANSITIONS=184} [2025-03-09 01:11:57,154 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 29 predicate places. [2025-03-09 01:11:57,155 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 184 transitions, 1632 flow [2025-03-09 01:11:57,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:57,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:57,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:57,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 01:11:57,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:57,356 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:57,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1073846056, now seen corresponding path program 1 times [2025-03-09 01:11:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965373192] [2025-03-09 01:11:57,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:57,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:57,359 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:57,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 01:11:57,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 01:11:57,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:11:57,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:57,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:57,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:11:57,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:57,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:57,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:57,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965373192] [2025-03-09 01:11:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965373192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:57,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:57,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689322322] [2025-03-09 01:11:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:57,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:57,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:57,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:57,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:57,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-03-09 01:11:57,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 184 transitions, 1632 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-03-09 01:11:57,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:58,477 INFO L124 PetriNetUnfolderBase]: 2909/5649 cut-off events. [2025-03-09 01:11:58,477 INFO L125 PetriNetUnfolderBase]: For 31811/32367 co-relation queries the response was YES. [2025-03-09 01:11:58,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26179 conditions, 5649 events. 2909/5649 cut-off events. For 31811/32367 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 43094 event pairs, 1471 based on Foata normal form. 133/5598 useless extension candidates. Maximal degree in co-relation 22231. Up to 3877 conditions per place. [2025-03-09 01:11:58,501 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 104 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2025-03-09 01:11:58,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 190 transitions, 1902 flow [2025-03-09 01:11:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-03-09 01:11:58,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-03-09 01:11:58,502 INFO L175 Difference]: Start difference. First operand has 151 places, 184 transitions, 1632 flow. Second operand 3 states and 257 transitions. [2025-03-09 01:11:58,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 190 transitions, 1902 flow [2025-03-09 01:11:58,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 190 transitions, 1805 flow, removed 26 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:58,564 INFO L231 Difference]: Finished difference. Result has 147 places, 182 transitions, 1545 flow [2025-03-09 01:11:58,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1545, PETRI_PLACES=147, PETRI_TRANSITIONS=182} [2025-03-09 01:11:58,564 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 25 predicate places. [2025-03-09 01:11:58,564 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 182 transitions, 1545 flow [2025-03-09 01:11:58,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:58,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:58,565 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:58,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 01:11:58,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:58,765 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:58,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1549716369, now seen corresponding path program 1 times [2025-03-09 01:11:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859410160] [2025-03-09 01:11:58,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:58,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:58,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:58,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:58,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 01:11:58,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 01:11:58,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:11:58,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:58,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:58,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:11:58,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:58,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 01:11:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:58,891 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:58,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859410160] [2025-03-09 01:11:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859410160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:58,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:58,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666095166] [2025-03-09 01:11:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:58,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:58,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:58,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:58,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-03-09 01:11:58,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 182 transitions, 1545 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:58,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:58,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-03-09 01:11:58,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:59,585 INFO L124 PetriNetUnfolderBase]: 2909/5641 cut-off events. [2025-03-09 01:11:59,585 INFO L125 PetriNetUnfolderBase]: For 27211/27760 co-relation queries the response was YES. [2025-03-09 01:11:59,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25332 conditions, 5641 events. 2909/5641 cut-off events. For 27211/27760 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42883 event pairs, 1471 based on Foata normal form. 133/5590 useless extension candidates. Maximal degree in co-relation 24645. Up to 3877 conditions per place. [2025-03-09 01:11:59,623 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 104 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-03-09 01:11:59,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 188 transitions, 1811 flow [2025-03-09 01:11:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-03-09 01:11:59,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-03-09 01:11:59,624 INFO L175 Difference]: Start difference. First operand has 147 places, 182 transitions, 1545 flow. Second operand 3 states and 257 transitions. [2025-03-09 01:11:59,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 188 transitions, 1811 flow [2025-03-09 01:11:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 1801 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:59,700 INFO L231 Difference]: Finished difference. Result has 145 places, 180 transitions, 1541 flow [2025-03-09 01:11:59,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1541, PETRI_PLACES=145, PETRI_TRANSITIONS=180} [2025-03-09 01:11:59,700 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2025-03-09 01:11:59,700 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 180 transitions, 1541 flow [2025-03-09 01:11:59,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:11:59,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:59,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:59,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 01:11:59,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:59,901 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:59,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1114453026, now seen corresponding path program 1 times [2025-03-09 01:11:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:59,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064314796] [2025-03-09 01:11:59,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:59,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:59,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:59,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:11:59,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 01:11:59,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 01:12:00,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:12:00,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:00,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:00,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:12:00,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:00,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:00,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:00,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064314796] [2025-03-09 01:12:00,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064314796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:00,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678978414] [2025-03-09 01:12:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:00,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:12:00,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:00,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:12:00,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:12:00,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-03-09 01:12:00,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 180 transitions, 1541 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:00,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:00,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-03-09 01:12:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:00,198 INFO L124 PetriNetUnfolderBase]: 265/536 cut-off events. [2025-03-09 01:12:00,198 INFO L125 PetriNetUnfolderBase]: For 2449/2504 co-relation queries the response was YES. [2025-03-09 01:12:00,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 536 events. 265/536 cut-off events. For 2449/2504 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2187 event pairs, 49 based on Foata normal form. 50/566 useless extension candidates. Maximal degree in co-relation 2352. Up to 269 conditions per place. [2025-03-09 01:12:00,201 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2025-03-09 01:12:00,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 100 transitions, 793 flow [2025-03-09 01:12:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:12:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:12:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2025-03-09 01:12:00,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2025-03-09 01:12:00,202 INFO L175 Difference]: Start difference. First operand has 145 places, 180 transitions, 1541 flow. Second operand 4 states and 335 transitions. [2025-03-09 01:12:00,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 100 transitions, 793 flow [2025-03-09 01:12:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 525 flow, removed 34 selfloop flow, removed 38 redundant places. [2025-03-09 01:12:00,206 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 319 flow [2025-03-09 01:12:00,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=89, 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=319, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2025-03-09 01:12:00,207 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2025-03-09 01:12:00,207 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 319 flow [2025-03-09 01:12:00,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:00,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:00,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:00,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-09 01:12:00,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:00,407 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -355566826, now seen corresponding path program 1 times [2025-03-09 01:12:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063293239] [2025-03-09 01:12:00,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:00,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:00,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:00,410 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:12:00,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 01:12:00,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 01:12:00,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:12:00,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:00,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:00,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-09 01:12:00,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:00,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:12:00,646 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 9 [2025-03-09 01:12:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:00,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:00,714 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:00,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063293239] [2025-03-09 01:12:00,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063293239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:00,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:00,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 01:12:00,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255698058] [2025-03-09 01:12:00,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:00,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 01:12:00,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:00,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 01:12:00,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:12:01,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-09 01:12:01,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:01,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:01,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-09 01:12:01,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:01,842 INFO L124 PetriNetUnfolderBase]: 302/623 cut-off events. [2025-03-09 01:12:01,842 INFO L125 PetriNetUnfolderBase]: For 1373/1379 co-relation queries the response was YES. [2025-03-09 01:12:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 623 events. 302/623 cut-off events. For 1373/1379 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2714 event pairs, 25 based on Foata normal form. 10/622 useless extension candidates. Maximal degree in co-relation 2034. Up to 286 conditions per place. [2025-03-09 01:12:01,845 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 69 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2025-03-09 01:12:01,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 784 flow [2025-03-09 01:12:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:12:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:12:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 726 transitions. [2025-03-09 01:12:01,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-03-09 01:12:01,846 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 319 flow. Second operand 10 states and 726 transitions. [2025-03-09 01:12:01,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 784 flow [2025-03-09 01:12:01,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 742 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:12:01,849 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 534 flow [2025-03-09 01:12:01,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=534, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2025-03-09 01:12:01,849 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2025-03-09 01:12:01,849 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 534 flow [2025-03-09 01:12:01,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:01,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:01,850 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:01,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 01:12:02,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:02,050 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:02,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2099307990, now seen corresponding path program 2 times [2025-03-09 01:12:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567281580] [2025-03-09 01:12:02,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:12:02,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:02,053 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:12:02,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 01:12:02,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 1 equivalence classes. [2025-03-09 01:12:02,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:12:02,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:12:02,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:02,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-09 01:12:02,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:02,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:12:02,320 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 9 [2025-03-09 01:12:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:02,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:02,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:02,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567281580] [2025-03-09 01:12:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567281580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:02,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 01:12:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816404119] [2025-03-09 01:12:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:02,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 01:12:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:02,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 01:12:02,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:12:03,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-09 01:12:03,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 534 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:03,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:03,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-09 01:12:03,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:03,708 INFO L124 PetriNetUnfolderBase]: 334/686 cut-off events. [2025-03-09 01:12:03,708 INFO L125 PetriNetUnfolderBase]: For 1851/1857 co-relation queries the response was YES. [2025-03-09 01:12:03,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 686 events. 334/686 cut-off events. For 1851/1857 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3053 event pairs, 15 based on Foata normal form. 13/690 useless extension candidates. Maximal degree in co-relation 2566. Up to 202 conditions per place. [2025-03-09 01:12:03,712 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 82 selfloop transitions, 51 changer transitions 0/164 dead transitions. [2025-03-09 01:12:03,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 164 transitions, 1206 flow [2025-03-09 01:12:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:12:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:12:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 870 transitions. [2025-03-09 01:12:03,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2025-03-09 01:12:03,713 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 534 flow. Second operand 12 states and 870 transitions. [2025-03-09 01:12:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 164 transitions, 1206 flow [2025-03-09 01:12:03,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1164 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-09 01:12:03,718 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 823 flow [2025-03-09 01:12:03,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=823, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2025-03-09 01:12:03,719 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -6 predicate places. [2025-03-09 01:12:03,719 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 823 flow [2025-03-09 01:12:03,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:03,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:03,719 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:03,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 01:12:03,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:03,920 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:03,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash -235227450, now seen corresponding path program 3 times [2025-03-09 01:12:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:03,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218532163] [2025-03-09 01:12:03,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:12:03,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:03,922 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:12:03,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 01:12:04,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 1 equivalence classes. [2025-03-09 01:12:04,080 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:12:04,080 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:12:04,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:04,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:12:04,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:04,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:12:04,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 01:12:04,247 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:12:04,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 01:12:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:04,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:04,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218532163] [2025-03-09 01:12:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218532163] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:04,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:04,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850359138] [2025-03-09 01:12:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:04,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:04,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:04,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:04,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:04,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2025-03-09 01:12:04,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 823 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:04,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:04,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2025-03-09 01:12:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:04,604 INFO L124 PetriNetUnfolderBase]: 332/663 cut-off events. [2025-03-09 01:12:04,604 INFO L125 PetriNetUnfolderBase]: For 2252/2267 co-relation queries the response was YES. [2025-03-09 01:12:04,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 663 events. 332/663 cut-off events. For 2252/2267 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2886 event pairs, 129 based on Foata normal form. 7/648 useless extension candidates. Maximal degree in co-relation 2902. Up to 324 conditions per place. [2025-03-09 01:12:04,606 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 77 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2025-03-09 01:12:04,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 1043 flow [2025-03-09 01:12:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:12:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:12:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 329 transitions. [2025-03-09 01:12:04,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4984848484848485 [2025-03-09 01:12:04,607 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 823 flow. Second operand 5 states and 329 transitions. [2025-03-09 01:12:04,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 1043 flow [2025-03-09 01:12:04,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 945 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-03-09 01:12:04,612 INFO L231 Difference]: Finished difference. Result has 108 places, 120 transitions, 767 flow [2025-03-09 01:12:04,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=108, PETRI_TRANSITIONS=120} [2025-03-09 01:12:04,612 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2025-03-09 01:12:04,612 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 120 transitions, 767 flow [2025-03-09 01:12:04,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:04,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:04,612 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:04,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-09 01:12:04,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:04,813 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:04,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -670732975, now seen corresponding path program 1 times [2025-03-09 01:12:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274506878] [2025-03-09 01:12:04,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:04,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:04,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:04,817 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:12:04,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 01:12:04,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 01:12:04,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:12:04,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:04,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:04,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:12:04,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:05,041 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-09 01:12:05,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-09 01:12:05,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2025-03-09 01:12:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:05,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:05,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274506878] [2025-03-09 01:12:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274506878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445852959] [2025-03-09 01:12:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:05,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:05,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:05,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:05,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2025-03-09 01:12:05,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 120 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:05,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:05,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2025-03-09 01:12:05,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:05,386 INFO L124 PetriNetUnfolderBase]: 332/662 cut-off events. [2025-03-09 01:12:05,387 INFO L125 PetriNetUnfolderBase]: For 2042/2057 co-relation queries the response was YES. [2025-03-09 01:12:05,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2809 conditions, 662 events. 332/662 cut-off events. For 2042/2057 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2923 event pairs, 113 based on Foata normal form. 5/647 useless extension candidates. Maximal degree in co-relation 2785. Up to 252 conditions per place. [2025-03-09 01:12:05,390 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 74 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2025-03-09 01:12:05,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 129 transitions, 1047 flow [2025-03-09 01:12:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:12:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:12:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2025-03-09 01:12:05,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5348484848484848 [2025-03-09 01:12:05,391 INFO L175 Difference]: Start difference. First operand has 108 places, 120 transitions, 767 flow. Second operand 5 states and 353 transitions. [2025-03-09 01:12:05,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 129 transitions, 1047 flow [2025-03-09 01:12:05,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 129 transitions, 993 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:12:05,395 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 781 flow [2025-03-09 01:12:05,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2025-03-09 01:12:05,397 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2025-03-09 01:12:05,397 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 781 flow [2025-03-09 01:12:05,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:05,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:05,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:05,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-09 01:12:05,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:05,598 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:05,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 538971228, now seen corresponding path program 1 times [2025-03-09 01:12:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010759287] [2025-03-09 01:12:05,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:05,600 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:12:05,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 01:12:05,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 01:12:05,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 01:12:05,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:05,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:05,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-09 01:12:05,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:05,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:12:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:06,010 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:06,011 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:06,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2025-03-09 01:12:06,061 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-09 01:12:06,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:06,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2025-03-09 01:12:09,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:09,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 63 [2025-03-09 01:12:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:09,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:09,627 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010759287] [2025-03-09 01:12:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010759287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-09 01:12:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271376213] [2025-03-09 01:12:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:09,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:12:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:09,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:12:09,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=68, Unknown=2, NotChecked=0, Total=90 [2025-03-09 01:12:11,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:13,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:15,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:18,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:19,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:22,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:24,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:26,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:28,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:30,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:32,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:34,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:36,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:38,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:41,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:43,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:45,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:47,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:49,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:51,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:51,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 132 [2025-03-09 01:12:51,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 781 flow. Second operand has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:51,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:51,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 132 [2025-03-09 01:12:51,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:55,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:02,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:06,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:08,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]