./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.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-3_2-container_of-global.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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:11:40,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:11:40,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:11:40,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:11:40,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:11:41,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:11:41,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:11:41,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:11:41,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:11:41,003 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:11:41,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:11:41,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:11:41,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:11:41,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:11:41,005 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:11:41,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:11:41,006 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:11:41,007 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:11:41,007 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:11:41,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:11:41,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:11:41,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:11:41,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:41,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:11:41,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:11:41,008 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-03-09 01:11:41,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:11:41,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:11:41,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:11:41,248 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:11:41,248 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:11:41,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-09 01:11:42,360 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602d37edd/4a2a2d8351c948a08078faf5b2589f92/FLAG3f102481c [2025-03-09 01:11:42,693 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:11:42,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-09 01:11:42,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602d37edd/4a2a2d8351c948a08078faf5b2589f92/FLAG3f102481c [2025-03-09 01:11:42,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602d37edd/4a2a2d8351c948a08078faf5b2589f92 [2025-03-09 01:11:42,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:11:42,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:11:42,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:42,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:11:42,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:11:42,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:42" (1/1) ... [2025-03-09 01:11:42,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b6f424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:42, skipping insertion in model container [2025-03-09 01:11:42,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:42" (1/1) ... [2025-03-09 01:11:42,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:43,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:43,324 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 01:11:43,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1140ec14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:43, skipping insertion in model container [2025-03-09 01:11:43,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:43,325 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 01:11:43,326 INFO L158 Benchmark]: Toolchain (without parser) took 380.76ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:43,328 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:11:43,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.83ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:11:43,330 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 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.83ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: 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-3_2-container_of-global.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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:11:45,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:11:45,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 01:11:45,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:11:45,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:11:45,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:11:45,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:11:45,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:11:45,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:11:45,222 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:11:45,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:11:45,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:11:45,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:11:45,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:11:45,224 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:11:45,225 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:11:45,226 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:45,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:11:45,226 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 01:11:45,227 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 01:11:45,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:11:45,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:11:45,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:11:45,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:11:45,227 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-03-09 01:11:45,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:11:45,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:11:45,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:11:45,472 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:11:45,472 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:11:45,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-09 01:11:46,717 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b1a6b39/650d021e6571499eb39f088394fc716d/FLAGfee4d0570 [2025-03-09 01:11:46,972 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:11:46,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-09 01:11:46,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b1a6b39/650d021e6571499eb39f088394fc716d/FLAGfee4d0570 [2025-03-09 01:11:47,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b1a6b39/650d021e6571499eb39f088394fc716d [2025-03-09 01:11:47,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:11:47,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:11:47,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:47,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:11:47,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:11:47,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8f66bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47, skipping insertion in model container [2025-03-09 01:11:47,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:47,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:47,351 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 01:11:47,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:11:47,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:47,433 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:11:47,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:11:47,531 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:11:47,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47 WrapperNode [2025-03-09 01:11:47,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:11:47,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:47,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:11:47,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:11:47,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,584 INFO L138 Inliner]: procedures = 249, calls = 44, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2025-03-09 01:11:47,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:11:47,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:11:47,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:11:47,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:11:47,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,616 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 01:11:47,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,638 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:11:47,650 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:11:47,650 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:11:47,650 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:11:47,650 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (1/1) ... [2025-03-09 01:11:47,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:11:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:47,678 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 01:11:47,680 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 01:11:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-09 01:11:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 01:11:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:11:47,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 01:11:47,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 01:11:47,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 01:11:47,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:11:47,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:11:47,703 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 01:11:47,976 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:11:47,978 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:11:48,415 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:11:48,415 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:11:48,569 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:11:48,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:11:48,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:48 BoogieIcfgContainer [2025-03-09 01:11:48,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:11:48,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:11:48,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:11:48,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:11:48,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:11:47" (1/3) ... [2025-03-09 01:11:48,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdfe9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:48, skipping insertion in model container [2025-03-09 01:11:48,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:11:47" (2/3) ... [2025-03-09 01:11:48,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdfe9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:11:48, skipping insertion in model container [2025-03-09 01:11:48,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:11:48" (3/3) ... [2025-03-09 01:11:48,581 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2025-03-09 01:11:48,593 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:11:48,594 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_2-container_of-global.i that has 2 procedures, 100 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-03-09 01:11:48,594 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:11:48,657 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:11:48,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 266 flow [2025-03-09 01:11:48,746 INFO L124 PetriNetUnfolderBase]: 18/159 cut-off events. [2025-03-09 01:11:48,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:11:48,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 18/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 480 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2025-03-09 01:11:48,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 266 flow [2025-03-09 01:11:48,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 260 flow [2025-03-09 01:11:48,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:11:48,772 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;@21c64486, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:11:48,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-09 01:11:48,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:11:48,775 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-09 01:11:48,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:11:48,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:48,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:11:48,777 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 01:11:48,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 497114, now seen corresponding path program 1 times [2025-03-09 01:11:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:48,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526184917] [2025-03-09 01:11:48,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:48,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:48,794 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 01:11:48,795 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 01:11:48,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:11:48,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:11:48,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:48,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:48,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:11:48,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:48,947 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 01:11:48,959 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 01:11:48,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:48,959 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526184917] [2025-03-09 01:11:48,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526184917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:48,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:48,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036324736] [2025-03-09 01:11:48,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:48,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:48,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:48,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:49,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-03-09 01:11:49,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 01:11:49,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:49,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-03-09 01:11:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:50,012 INFO L124 PetriNetUnfolderBase]: 3071/7677 cut-off events. [2025-03-09 01:11:50,013 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-09 01:11:50,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12595 conditions, 7677 events. 3071/7677 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 73606 event pairs, 407 based on Foata normal form. 588/5627 useless extension candidates. Maximal degree in co-relation 12356. Up to 4146 conditions per place. [2025-03-09 01:11:50,050 INFO L140 encePairwiseOnDemand]: 108/126 looper letters, 78 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2025-03-09 01:11:50,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 420 flow [2025-03-09 01:11:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2025-03-09 01:11:50,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-09 01:11:50,060 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 260 flow. Second operand 3 states and 234 transitions. [2025-03-09 01:11:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 420 flow [2025-03-09 01:11:50,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 124 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:50,068 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 212 flow [2025-03-09 01:11:50,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2025-03-09 01:11:50,071 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -12 predicate places. [2025-03-09 01:11:50,071 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 212 flow [2025-03-09 01:11:50,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 01:11:50,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:50,072 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:11:50,081 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 01:11:50,272 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 01:11:50,273 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 01:11:50,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 497115, now seen corresponding path program 1 times [2025-03-09 01:11:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093985336] [2025-03-09 01:11:50,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:50,276 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 01:11:50,277 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 01:11:50,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:11:50,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:11:50,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:50,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:50,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 01:11:50,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:50,384 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 01:11:50,396 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 01:11:50,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:50,396 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093985336] [2025-03-09 01:11:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093985336] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:50,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814282801] [2025-03-09 01:11:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:50,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:50,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:50,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:50,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-03-09 01:11:50,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 01:11:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-03-09 01:11:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:51,409 INFO L124 PetriNetUnfolderBase]: 3071/7673 cut-off events. [2025-03-09 01:11:51,409 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-03-09 01:11:51,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 7673 events. 3071/7673 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 73660 event pairs, 407 based on Foata normal form. 2/5037 useless extension candidates. Maximal degree in co-relation 1475. Up to 4146 conditions per place. [2025-03-09 01:11:51,459 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 76 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2025-03-09 01:11:51,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 120 transitions, 404 flow [2025-03-09 01:11:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2025-03-09 01:11:51,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2025-03-09 01:11:51,467 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 212 flow. Second operand 3 states and 226 transitions. [2025-03-09 01:11:51,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 120 transitions, 404 flow [2025-03-09 01:11:51,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:51,470 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 204 flow [2025-03-09 01:11:51,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2025-03-09 01:11:51,471 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-03-09 01:11:51,471 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 204 flow [2025-03-09 01:11:51,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 01:11:51,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:51,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 01:11:51,485 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 01:11:51,672 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 01:11:51,672 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 01:11:51,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 15408698, now seen corresponding path program 1 times [2025-03-09 01:11:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994842923] [2025-03-09 01:11:51,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:51,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:51,679 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 01:11:51,681 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 01:11:51,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 01:11:51,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 01:11:51,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:51,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:51,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 01:11:51,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:51,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:51,791 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:51,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994842923] [2025-03-09 01:11:51,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994842923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:11:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193787784] [2025-03-09 01:11:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:51,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:51,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:51,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:51,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-03-09 01:11:51,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 01:11:51,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:51,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-03-09 01:11:51,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:52,365 INFO L124 PetriNetUnfolderBase]: 3335/6211 cut-off events. [2025-03-09 01:11:52,365 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-03-09 01:11:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 6211 events. 3335/6211 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 44084 event pairs, 3069 based on Foata normal form. 0/4078 useless extension candidates. Maximal degree in co-relation 3942. Up to 4873 conditions per place. [2025-03-09 01:11:52,387 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 76 selfloop transitions, 3 changer transitions 2/121 dead transitions. [2025-03-09 01:11:52,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 410 flow [2025-03-09 01:11:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2025-03-09 01:11:52,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-09 01:11:52,389 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 204 flow. Second operand 3 states and 234 transitions. [2025-03-09 01:11:52,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 410 flow [2025-03-09 01:11:52,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:11:52,396 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 209 flow [2025-03-09 01:11:52,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2025-03-09 01:11:52,397 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -15 predicate places. [2025-03-09 01:11:52,397 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 209 flow [2025-03-09 01:11:52,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 01:11:52,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:52,398 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:52,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:11:52,602 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 01:11:52,602 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 01:11:52,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1158078077, now seen corresponding path program 1 times [2025-03-09 01:11:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024602549] [2025-03-09 01:11:52,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:52,610 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 01:11:52,621 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 01:11:52,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 01:11:52,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 01:11:52,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:52,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:52,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:11:52,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:52,729 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:52,731 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:52,732 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:52,735 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 01:11:52,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:52,794 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 88 treesize of output 63 [2025-03-09 01:11:52,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:52,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 49 [2025-03-09 01:11:52,892 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 01:11:52,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:52,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:52,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024602549] [2025-03-09 01:11:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024602549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:52,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:52,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:52,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449846134] [2025-03-09 01:11:52,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:52,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:52,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:52,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:53,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-03-09 01:11:53,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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 01:11:53,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:53,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-03-09 01:11:53,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:53,851 INFO L124 PetriNetUnfolderBase]: 3598/6661 cut-off events. [2025-03-09 01:11:53,852 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2025-03-09 01:11:53,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12663 conditions, 6661 events. 3598/6661 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 47116 event pairs, 2343 based on Foata normal form. 1/4538 useless extension candidates. Maximal degree in co-relation 11689. Up to 5605 conditions per place. [2025-03-09 01:11:53,881 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 64 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2025-03-09 01:11:53,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 370 flow [2025-03-09 01:11:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2025-03-09 01:11:53,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2025-03-09 01:11:53,886 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 209 flow. Second operand 5 states and 312 transitions. [2025-03-09 01:11:53,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 370 flow [2025-03-09 01:11:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 359 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 01:11:53,908 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 224 flow [2025-03-09 01:11:53,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2025-03-09 01:11:53,909 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-03-09 01:11:53,909 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 224 flow [2025-03-09 01:11:53,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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 01:11:53,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:53,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:53,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 01:11:54,112 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 01:11:54,113 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 01:11:54,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1131098796, now seen corresponding path program 1 times [2025-03-09 01:11:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132548112] [2025-03-09 01:11:54,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:54,116 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 01:11:54,118 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 01:11:54,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 01:11:54,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:11:54,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:54,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:54,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:11:54,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:54,223 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:54,224 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:54,224 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:11:54,227 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 01:11:54,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:11:54,362 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 01:11:54,372 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 01:11:54,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:54,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132548112] [2025-03-09 01:11:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132548112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:11:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449824238] [2025-03-09 01:11:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:54,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:54,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:54,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:54,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2025-03-09 01:11:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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 01:11:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:54,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2025-03-09 01:11:54,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:55,185 INFO L124 PetriNetUnfolderBase]: 4126/7546 cut-off events. [2025-03-09 01:11:55,185 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2025-03-09 01:11:55,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14648 conditions, 7546 events. 4126/7546 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 53418 event pairs, 2727 based on Foata normal form. 0/5114 useless extension candidates. Maximal degree in co-relation 8001. Up to 6425 conditions per place. [2025-03-09 01:11:55,216 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 66 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2025-03-09 01:11:55,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 387 flow [2025-03-09 01:11:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:11:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:11:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2025-03-09 01:11:55,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2025-03-09 01:11:55,218 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 224 flow. Second operand 5 states and 291 transitions. [2025-03-09 01:11:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 387 flow [2025-03-09 01:11:55,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 379 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:11:55,220 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 228 flow [2025-03-09 01:11:55,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2025-03-09 01:11:55,221 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -18 predicate places. [2025-03-09 01:11:55,221 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 228 flow [2025-03-09 01:11:55,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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 01:11:55,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:55,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:55,231 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 01:11:55,422 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 01:11:55,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:55,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1742288832, now seen corresponding path program 1 times [2025-03-09 01:11:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027123583] [2025-03-09 01:11:55,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:55,426 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 01:11:55,430 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 01:11:55,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:11:55,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:11:55,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:55,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:55,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:11:55,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:55,580 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 01:11:55,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:55,580 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027123583] [2025-03-09 01:11:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027123583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:55,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:55,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608683451] [2025-03-09 01:11:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:55,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:55,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:55,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:55,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:55,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-03-09 01:11:55,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 01:11:55,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:55,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-03-09 01:11:55,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:56,366 INFO L124 PetriNetUnfolderBase]: 2554/6148 cut-off events. [2025-03-09 01:11:56,367 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2025-03-09 01:11:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 6148 events. 2554/6148 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 54688 event pairs, 183 based on Foata normal form. 0/4473 useless extension candidates. Maximal degree in co-relation 5200. Up to 2287 conditions per place. [2025-03-09 01:11:56,391 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 142 selfloop transitions, 15 changer transitions 1/193 dead transitions. [2025-03-09 01:11:56,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 193 transitions, 769 flow [2025-03-09 01:11:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:11:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:11:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 530 transitions. [2025-03-09 01:11:56,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257936507936508 [2025-03-09 01:11:56,393 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 228 flow. Second operand 8 states and 530 transitions. [2025-03-09 01:11:56,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 193 transitions, 769 flow [2025-03-09 01:11:56,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 747 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:56,396 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 315 flow [2025-03-09 01:11:56,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2025-03-09 01:11:56,397 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -11 predicate places. [2025-03-09 01:11:56,397 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 315 flow [2025-03-09 01:11:56,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 01:11:56,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:56,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:56,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 01:11:56,597 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 01:11:56,598 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:56,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1742288831, now seen corresponding path program 1 times [2025-03-09 01:11:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:56,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567981142] [2025-03-09 01:11:56,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:56,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:56,602 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 01:11:56,614 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 01:11:56,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:11:56,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:11:56,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:56,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:56,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:11:56,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:56,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:56,804 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 01:11:56,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:56,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567981142] [2025-03-09 01:11:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567981142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964080723] [2025-03-09 01:11:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:56,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:56,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:56,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:56,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-03-09 01:11:56,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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 01:11:56,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:56,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-03-09 01:11:56,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:57,551 INFO L124 PetriNetUnfolderBase]: 1721/4181 cut-off events. [2025-03-09 01:11:57,551 INFO L125 PetriNetUnfolderBase]: For 1973/1973 co-relation queries the response was YES. [2025-03-09 01:11:57,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8516 conditions, 4181 events. 1721/4181 cut-off events. For 1973/1973 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 34822 event pairs, 207 based on Foata normal form. 450/3770 useless extension candidates. Maximal degree in co-relation 7345. Up to 1957 conditions per place. [2025-03-09 01:11:57,569 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 125 selfloop transitions, 12 changer transitions 2/176 dead transitions. [2025-03-09 01:11:57,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 176 transitions, 765 flow [2025-03-09 01:11:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:11:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:11:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 473 transitions. [2025-03-09 01:11:57,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.536281179138322 [2025-03-09 01:11:57,571 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 315 flow. Second operand 7 states and 473 transitions. [2025-03-09 01:11:57,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 176 transitions, 765 flow [2025-03-09 01:11:57,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 176 transitions, 765 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:11:57,577 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 373 flow [2025-03-09 01:11:57,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-03-09 01:11:57,577 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2025-03-09 01:11:57,577 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 373 flow [2025-03-09 01:11:57,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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 01:11:57,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:57,578 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:57,588 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 01:11:57,778 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 01:11:57,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:57,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1821344398, now seen corresponding path program 1 times [2025-03-09 01:11:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:57,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914862481] [2025-03-09 01:11:57,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:57,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:57,782 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 01:11:57,783 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 01:11:57,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:57,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:57,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:57,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:57,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:11:57,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:57,895 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 01:11:57,948 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 01:11:57,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:57,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914862481] [2025-03-09 01:11:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914862481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:57,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:57,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333138461] [2025-03-09 01:11:57,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:57,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:57,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:57,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:58,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-03-09 01:11:58,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 01:11:58,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:58,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-03-09 01:11:58,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:58,378 INFO L124 PetriNetUnfolderBase]: 1721/3551 cut-off events. [2025-03-09 01:11:58,378 INFO L125 PetriNetUnfolderBase]: For 3615/3615 co-relation queries the response was YES. [2025-03-09 01:11:58,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 3551 events. 1721/3551 cut-off events. For 3615/3615 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 24751 event pairs, 958 based on Foata normal form. 146/3157 useless extension candidates. Maximal degree in co-relation 7333. Up to 1747 conditions per place. [2025-03-09 01:11:58,391 INFO L140 encePairwiseOnDemand]: 119/126 looper letters, 91 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2025-03-09 01:11:58,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 128 transitions, 623 flow [2025-03-09 01:11:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2025-03-09 01:11:58,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-03-09 01:11:58,393 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 373 flow. Second operand 3 states and 225 transitions. [2025-03-09 01:11:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 128 transitions, 623 flow [2025-03-09 01:11:58,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 609 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:11:58,396 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 391 flow [2025-03-09 01:11:58,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2025-03-09 01:11:58,397 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -3 predicate places. [2025-03-09 01:11:58,397 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 391 flow [2025-03-09 01:11:58,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 01:11:58,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:58,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:58,406 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 01:11:58,598 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 01:11:58,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:58,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1821344397, now seen corresponding path program 1 times [2025-03-09 01:11:58,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127150988] [2025-03-09 01:11:58,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:58,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:58,602 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 01:11:58,603 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 01:11:58,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:11:58,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:11:58,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:58,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:58,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:11:58,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:58,700 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 01:11:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:11:58,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:58,726 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:58,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127150988] [2025-03-09 01:11:58,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127150988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:58,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:11:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067291076] [2025-03-09 01:11:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:58,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:11:58,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:58,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:11:58,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:11:58,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-03-09 01:11:58,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 01:11:58,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:58,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-03-09 01:11:58,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:11:59,106 INFO L124 PetriNetUnfolderBase]: 1973/3860 cut-off events. [2025-03-09 01:11:59,106 INFO L125 PetriNetUnfolderBase]: For 3908/3908 co-relation queries the response was YES. [2025-03-09 01:11:59,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 3860 events. 1973/3860 cut-off events. For 3908/3908 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 25804 event pairs, 1315 based on Foata normal form. 0/3323 useless extension candidates. Maximal degree in co-relation 8412. Up to 2473 conditions per place. [2025-03-09 01:11:59,138 INFO L140 encePairwiseOnDemand]: 117/126 looper letters, 80 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2025-03-09 01:11:59,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 589 flow [2025-03-09 01:11:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:11:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:11:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-03-09 01:11:59,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-09 01:11:59,139 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 391 flow. Second operand 3 states and 210 transitions. [2025-03-09 01:11:59,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 589 flow [2025-03-09 01:11:59,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:11:59,143 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 389 flow [2025-03-09 01:11:59,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2025-03-09 01:11:59,144 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -7 predicate places. [2025-03-09 01:11:59,144 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 389 flow [2025-03-09 01:11:59,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 01:11:59,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:11:59,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:11:59,153 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 01:11:59,344 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 01:11:59,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:11:59,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:11:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 696763674, now seen corresponding path program 1 times [2025-03-09 01:11:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:11:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077198038] [2025-03-09 01:11:59,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:11:59,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:11:59,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:11:59,347 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 01:11:59,348 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 01:11:59,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:11:59,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:11:59,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:11:59,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:11:59,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 01:11:59,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:11:59,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:11:59,548 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 01:11:59,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:11:59,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:11:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077198038] [2025-03-09 01:11:59,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077198038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:11:59,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:11:59,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:11:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494921338] [2025-03-09 01:11:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:11:59,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:11:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:11:59,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:11:59,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:11:59,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-03-09 01:11:59,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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 01:11:59,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:11:59,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-03-09 01:11:59,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:00,232 INFO L124 PetriNetUnfolderBase]: 1301/2852 cut-off events. [2025-03-09 01:12:00,232 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2025-03-09 01:12:00,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 2852 events. 1301/2852 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19442 event pairs, 93 based on Foata normal form. 0/2623 useless extension candidates. Maximal degree in co-relation 5905. Up to 1488 conditions per place. [2025-03-09 01:12:00,241 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 116 selfloop transitions, 16 changer transitions 1/165 dead transitions. [2025-03-09 01:12:00,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 165 transitions, 909 flow [2025-03-09 01:12:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:12:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:12:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 455 transitions. [2025-03-09 01:12:00,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-03-09 01:12:00,243 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 389 flow. Second operand 7 states and 455 transitions. [2025-03-09 01:12:00,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 165 transitions, 909 flow [2025-03-09 01:12:00,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 891 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:12:00,249 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 479 flow [2025-03-09 01:12:00,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2025-03-09 01:12:00,250 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2025-03-09 01:12:00,250 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 479 flow [2025-03-09 01:12:00,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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 01:12:00,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:00,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:00,259 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 01:12:00,451 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 01:12:00,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:00,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 696763673, now seen corresponding path program 1 times [2025-03-09 01:12:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182065452] [2025-03-09 01:12:00,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:00,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:00,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:00,454 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 01:12:00,455 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 01:12:00,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:12:00,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:12:00,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:00,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:00,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:12:00,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:00,558 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 01:12:00,592 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 01:12:00,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:00,593 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182065452] [2025-03-09 01:12:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182065452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:00,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235973746] [2025-03-09 01:12:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:00,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:00,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:00,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:00,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:00,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-03-09 01:12:00,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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 01:12:00,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:00,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-03-09 01:12:00,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:01,272 INFO L124 PetriNetUnfolderBase]: 1070/2326 cut-off events. [2025-03-09 01:12:01,273 INFO L125 PetriNetUnfolderBase]: For 2795/2795 co-relation queries the response was YES. [2025-03-09 01:12:01,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 2326 events. 1070/2326 cut-off events. For 2795/2795 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15267 event pairs, 153 based on Foata normal form. 65/2328 useless extension candidates. Maximal degree in co-relation 5144. Up to 794 conditions per place. [2025-03-09 01:12:01,280 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 119 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2025-03-09 01:12:01,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 170 transitions, 994 flow [2025-03-09 01:12:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:12:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:12:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 497 transitions. [2025-03-09 01:12:01,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-03-09 01:12:01,281 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 479 flow. Second operand 8 states and 497 transitions. [2025-03-09 01:12:01,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 170 transitions, 994 flow [2025-03-09 01:12:01,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 170 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:12:01,286 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 604 flow [2025-03-09 01:12:01,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2025-03-09 01:12:01,287 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 10 predicate places. [2025-03-09 01:12:01,287 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 604 flow [2025-03-09 01:12:01,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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 01:12:01,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:01,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:01,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 01:12:01,487 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 01:12:01,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:01,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 718716973, now seen corresponding path program 1 times [2025-03-09 01:12:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33903786] [2025-03-09 01:12:01,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:01,490 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 01:12:01,492 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 01:12:01,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:12:01,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:12:01,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:01,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:01,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:12:01,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:01,618 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 01:12:01,623 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 01:12:01,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:01,753 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 01:12:01,762 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:12:01,763 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 01:12:01,772 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 01:12:01,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:01,772 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:01,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33903786] [2025-03-09 01:12:01,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33903786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:01,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:01,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:12:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882549309] [2025-03-09 01:12:01,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:01,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:12:01,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:01,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:12:01,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:12:02,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-03-09 01:12:02,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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 01:12:02,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:02,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-03-09 01:12:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:02,781 INFO L124 PetriNetUnfolderBase]: 1229/2618 cut-off events. [2025-03-09 01:12:02,781 INFO L125 PetriNetUnfolderBase]: For 5357/5357 co-relation queries the response was YES. [2025-03-09 01:12:02,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 2618 events. 1229/2618 cut-off events. For 5357/5357 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17840 event pairs, 320 based on Foata normal form. 27/2634 useless extension candidates. Maximal degree in co-relation 6771. Up to 745 conditions per place. [2025-03-09 01:12:02,789 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 136 selfloop transitions, 21 changer transitions 0/189 dead transitions. [2025-03-09 01:12:02,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 189 transitions, 1216 flow [2025-03-09 01:12:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:12:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:12:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 536 transitions. [2025-03-09 01:12:02,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47266313932980597 [2025-03-09 01:12:02,791 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 604 flow. Second operand 9 states and 536 transitions. [2025-03-09 01:12:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 189 transitions, 1216 flow [2025-03-09 01:12:02,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 189 transitions, 1188 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 01:12:02,800 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 618 flow [2025-03-09 01:12:02,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2025-03-09 01:12:02,800 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 11 predicate places. [2025-03-09 01:12:02,800 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 618 flow [2025-03-09 01:12:02,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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 01:12:02,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:02,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:12:02,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 01:12:03,004 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 01:12:03,004 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 01:12:03,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash -374887879, now seen corresponding path program 1 times [2025-03-09 01:12:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175618216] [2025-03-09 01:12:03,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:03,006 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 01:12:03,007 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 01:12:03,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:12:03,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:12:03,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:03,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:03,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:12:03,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:03,113 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 01:12:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:03,224 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 01:12:03,231 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:12:03,231 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 01:12:03,243 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 01:12:03,243 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:03,243 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:03,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175618216] [2025-03-09 01:12:03,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175618216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:03,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:03,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:12:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885586858] [2025-03-09 01:12:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:03,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:12:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:03,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:12:03,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:12:03,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-03-09 01:12:03,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 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 01:12:03,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:03,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-03-09 01:12:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:04,348 INFO L124 PetriNetUnfolderBase]: 1476/3063 cut-off events. [2025-03-09 01:12:04,348 INFO L125 PetriNetUnfolderBase]: For 6557/6557 co-relation queries the response was YES. [2025-03-09 01:12:04,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 3063 events. 1476/3063 cut-off events. For 6557/6557 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21672 event pairs, 498 based on Foata normal form. 24/3079 useless extension candidates. Maximal degree in co-relation 6840. Up to 701 conditions per place. [2025-03-09 01:12:04,362 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 135 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2025-03-09 01:12:04,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 186 transitions, 1249 flow [2025-03-09 01:12:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:12:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:12:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 514 transitions. [2025-03-09 01:12:04,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4532627865961199 [2025-03-09 01:12:04,365 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 618 flow. Second operand 9 states and 514 transitions. [2025-03-09 01:12:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 186 transitions, 1249 flow [2025-03-09 01:12:04,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 186 transitions, 1197 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-09 01:12:04,377 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 612 flow [2025-03-09 01:12:04,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=612, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2025-03-09 01:12:04,378 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 9 predicate places. [2025-03-09 01:12:04,378 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 612 flow [2025-03-09 01:12:04,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 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 01:12:04,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:04,379 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 01:12:04,389 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 01:12:04,579 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 01:12:04,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:04,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -239563997, now seen corresponding path program 1 times [2025-03-09 01:12:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436691524] [2025-03-09 01:12:04,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:04,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:04,583 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 01:12:04,584 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 01:12:04,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:12:04,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:12:04,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:04,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:04,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:12:04,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:04,701 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:04,701 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:04,702 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:04,702 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 01:12:04,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:04,735 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 01:12:04,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:04,759 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 01:12:04,768 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 01:12:04,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:04,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436691524] [2025-03-09 01:12:04,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436691524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:04,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:04,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:12:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085674261] [2025-03-09 01:12:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:04,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:04,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:04,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:04,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:04,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2025-03-09 01:12:04,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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 01:12:04,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:04,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2025-03-09 01:12:04,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:06,257 INFO L124 PetriNetUnfolderBase]: 2064/3902 cut-off events. [2025-03-09 01:12:06,258 INFO L125 PetriNetUnfolderBase]: For 8633/8633 co-relation queries the response was YES. [2025-03-09 01:12:06,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12541 conditions, 3902 events. 2064/3902 cut-off events. For 8633/8633 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 26575 event pairs, 978 based on Foata normal form. 0/3784 useless extension candidates. Maximal degree in co-relation 9390. Up to 2338 conditions per place. [2025-03-09 01:12:06,272 INFO L140 encePairwiseOnDemand]: 102/126 looper letters, 105 selfloop transitions, 43 changer transitions 0/171 dead transitions. [2025-03-09 01:12:06,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 171 transitions, 1219 flow [2025-03-09 01:12:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:12:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:12:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2025-03-09 01:12:06,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2025-03-09 01:12:06,274 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 612 flow. Second operand 7 states and 418 transitions. [2025-03-09 01:12:06,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 171 transitions, 1219 flow [2025-03-09 01:12:06,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 171 transitions, 1172 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:12:06,288 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 869 flow [2025-03-09 01:12:06,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=869, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2025-03-09 01:12:06,288 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 14 predicate places. [2025-03-09 01:12:06,288 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 869 flow [2025-03-09 01:12:06,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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 01:12:06,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:06,289 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 01:12:06,298 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 01:12:06,489 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 01:12:06,489 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 01:12:06,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1427247475, now seen corresponding path program 1 times [2025-03-09 01:12:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263613598] [2025-03-09 01:12:06,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:06,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:06,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:06,492 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 01:12:06,493 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 01:12:06,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 01:12:06,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:12:06,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:06,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:06,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:12:06,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:06,616 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:06,617 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:06,617 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:06,618 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 01:12:06,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:06,669 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 01:12:06,676 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 01:12:06,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:06,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:06,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263613598] [2025-03-09 01:12:06,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263613598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:06,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:06,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:12:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304678538] [2025-03-09 01:12:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:06,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:06,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:06,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:06,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2025-03-09 01:12:06,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 869 flow. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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 01:12:06,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:06,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2025-03-09 01:12:06,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:08,435 INFO L124 PetriNetUnfolderBase]: 2496/4598 cut-off events. [2025-03-09 01:12:08,435 INFO L125 PetriNetUnfolderBase]: For 14578/14578 co-relation queries the response was YES. [2025-03-09 01:12:08,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18065 conditions, 4598 events. 2496/4598 cut-off events. For 14578/14578 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31195 event pairs, 990 based on Foata normal form. 102/4686 useless extension candidates. Maximal degree in co-relation 14158. Up to 2486 conditions per place. [2025-03-09 01:12:08,452 INFO L140 encePairwiseOnDemand]: 102/126 looper letters, 110 selfloop transitions, 67 changer transitions 0/200 dead transitions. [2025-03-09 01:12:08,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 1746 flow [2025-03-09 01:12:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:12:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:12:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2025-03-09 01:12:08,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2025-03-09 01:12:08,454 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 869 flow. Second operand 7 states and 418 transitions. [2025-03-09 01:12:08,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 200 transitions, 1746 flow [2025-03-09 01:12:08,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 200 transitions, 1726 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-09 01:12:08,481 INFO L231 Difference]: Finished difference. Result has 141 places, 160 transitions, 1406 flow [2025-03-09 01:12:08,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=141, PETRI_TRANSITIONS=160} [2025-03-09 01:12:08,482 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 25 predicate places. [2025-03-09 01:12:08,482 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 160 transitions, 1406 flow [2025-03-09 01:12:08,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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 01:12:08,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:08,482 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 01:12:08,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 01:12:08,683 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 01:12:08,683 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:08,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1453331551, now seen corresponding path program 1 times [2025-03-09 01:12:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751894447] [2025-03-09 01:12:08,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:08,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:08,685 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 01:12:08,686 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 01:12:08,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:12:08,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:12:08,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:08,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:08,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 01:12:08,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:08,805 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 01:12:08,812 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 01:12:08,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:08,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751894447] [2025-03-09 01:12:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751894447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:08,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:12:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174099105] [2025-03-09 01:12:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:08,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:12:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:08,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:12:08,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:12:08,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2025-03-09 01:12:08,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 160 transitions, 1406 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:12:08,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:08,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2025-03-09 01:12:08,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:09,420 INFO L124 PetriNetUnfolderBase]: 2240/4303 cut-off events. [2025-03-09 01:12:09,420 INFO L125 PetriNetUnfolderBase]: For 25276/25314 co-relation queries the response was YES. [2025-03-09 01:12:09,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19908 conditions, 4303 events. 2240/4303 cut-off events. For 25276/25314 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30542 event pairs, 1270 based on Foata normal form. 15/4284 useless extension candidates. Maximal degree in co-relation 16525. Up to 3569 conditions per place. [2025-03-09 01:12:09,447 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 126 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2025-03-09 01:12:09,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 1744 flow [2025-03-09 01:12:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:12:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:12:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-03-09 01:12:09,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-09 01:12:09,448 INFO L175 Difference]: Start difference. First operand has 141 places, 160 transitions, 1406 flow. Second operand 3 states and 210 transitions. [2025-03-09 01:12:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 1744 flow [2025-03-09 01:12:09,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 166 transitions, 1692 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-03-09 01:12:09,500 INFO L231 Difference]: Finished difference. Result has 141 places, 158 transitions, 1360 flow [2025-03-09 01:12:09,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1360, PETRI_PLACES=141, PETRI_TRANSITIONS=158} [2025-03-09 01:12:09,500 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 25 predicate places. [2025-03-09 01:12:09,501 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 158 transitions, 1360 flow [2025-03-09 01:12:09,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:12:09,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:09,501 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 01:12:09,510 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 01:12:09,701 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 01:12:09,702 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:09,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1453331550, now seen corresponding path program 1 times [2025-03-09 01:12:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344786481] [2025-03-09 01:12:09,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:09,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:09,705 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 01:12:09,705 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 01:12:09,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:12:09,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:12:09,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:09,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:09,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:12:09,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:09,824 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 01:12:09,830 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 01:12:09,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:09,830 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344786481] [2025-03-09 01:12:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344786481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:12:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505387975] [2025-03-09 01:12:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:09,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:12:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:09,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:12:09,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:12:09,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2025-03-09 01:12:09,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 158 transitions, 1360 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:12:09,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:09,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2025-03-09 01:12:09,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:10,441 INFO L124 PetriNetUnfolderBase]: 2240/4296 cut-off events. [2025-03-09 01:12:10,441 INFO L125 PetriNetUnfolderBase]: For 24175/24213 co-relation queries the response was YES. [2025-03-09 01:12:10,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19691 conditions, 4296 events. 2240/4296 cut-off events. For 24175/24213 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30471 event pairs, 1270 based on Foata normal form. 15/4277 useless extension candidates. Maximal degree in co-relation 18948. Up to 3569 conditions per place. [2025-03-09 01:12:10,462 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 126 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2025-03-09 01:12:10,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 164 transitions, 1698 flow [2025-03-09 01:12:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:12:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:12:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-03-09 01:12:10,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-09 01:12:10,463 INFO L175 Difference]: Start difference. First operand has 141 places, 158 transitions, 1360 flow. Second operand 3 states and 210 transitions. [2025-03-09 01:12:10,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 164 transitions, 1698 flow [2025-03-09 01:12:10,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 164 transitions, 1672 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 01:12:10,509 INFO L231 Difference]: Finished difference. Result has 139 places, 156 transitions, 1348 flow [2025-03-09 01:12:10,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1348, PETRI_PLACES=139, PETRI_TRANSITIONS=156} [2025-03-09 01:12:10,509 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 23 predicate places. [2025-03-09 01:12:10,509 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 156 transitions, 1348 flow [2025-03-09 01:12:10,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:12:10,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:10,510 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 01:12:10,521 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 01:12:10,712 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 01:12:10,712 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:10,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1295027929, now seen corresponding path program 1 times [2025-03-09 01:12:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279199527] [2025-03-09 01:12:10,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:10,715 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 01:12:10,715 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 01:12:10,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:12:10,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:12:10,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:10,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:10,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:12:10,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:10,906 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_89| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89| (_ bv0 1))))) is different from true [2025-03-09 01:12:10,912 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 01:12:10,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:10,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279199527] [2025-03-09 01:12:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279199527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:12:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000655860] [2025-03-09 01:12:10,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:10,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:10,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:10,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-09 01:12:10,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 126 [2025-03-09 01:12:10,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 156 transitions, 1348 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 01:12:10,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:10,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 126 [2025-03-09 01:12:10,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:11,679 INFO L124 PetriNetUnfolderBase]: 2360/4434 cut-off events. [2025-03-09 01:12:11,679 INFO L125 PetriNetUnfolderBase]: For 21027/21027 co-relation queries the response was YES. [2025-03-09 01:12:11,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19859 conditions, 4434 events. 2360/4434 cut-off events. For 21027/21027 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30371 event pairs, 875 based on Foata normal form. 0/4432 useless extension candidates. Maximal degree in co-relation 19134. Up to 2087 conditions per place. [2025-03-09 01:12:11,699 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 136 selfloop transitions, 33 changer transitions 4/194 dead transitions. [2025-03-09 01:12:11,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 194 transitions, 1971 flow [2025-03-09 01:12:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:12:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:12:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2025-03-09 01:12:11,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-03-09 01:12:11,701 INFO L175 Difference]: Start difference. First operand has 139 places, 156 transitions, 1348 flow. Second operand 5 states and 252 transitions. [2025-03-09 01:12:11,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 194 transitions, 1971 flow [2025-03-09 01:12:11,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 194 transitions, 1961 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:12:11,744 INFO L231 Difference]: Finished difference. Result has 144 places, 170 transitions, 1592 flow [2025-03-09 01:12:11,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1592, PETRI_PLACES=144, PETRI_TRANSITIONS=170} [2025-03-09 01:12:11,745 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 28 predicate places. [2025-03-09 01:12:11,745 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 170 transitions, 1592 flow [2025-03-09 01:12:11,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 01:12:11,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:11,745 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] [2025-03-09 01:12:11,754 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 01:12:11,945 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 01:12:11,945 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 01:12:11,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1399859710, now seen corresponding path program 1 times [2025-03-09 01:12:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:11,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386722970] [2025-03-09 01:12:11,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:11,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:11,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:11,948 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 01:12:11,949 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 01:12:12,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 01:12:12,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 01:12:12,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:12,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:12,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:12:12,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:12:12,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:12,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:12,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386722970] [2025-03-09 01:12:12,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386722970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:12,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:12,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:12,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255024995] [2025-03-09 01:12:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:12,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:12:12,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:12,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:12:12,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:12:12,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-03-09 01:12:12,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 170 transitions, 1592 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 01:12:12,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:12,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-03-09 01:12:12,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:12,324 INFO L124 PetriNetUnfolderBase]: 225/436 cut-off events. [2025-03-09 01:12:12,324 INFO L125 PetriNetUnfolderBase]: For 2726/2726 co-relation queries the response was YES. [2025-03-09 01:12:12,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 436 events. 225/436 cut-off events. For 2726/2726 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1476 event pairs, 31 based on Foata normal form. 36/471 useless extension candidates. Maximal degree in co-relation 2119. Up to 226 conditions per place. [2025-03-09 01:12:12,326 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 64 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2025-03-09 01:12:12,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 96 transitions, 857 flow [2025-03-09 01:12:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:12:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:12:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2025-03-09 01:12:12,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218253968253969 [2025-03-09 01:12:12,327 INFO L175 Difference]: Start difference. First operand has 144 places, 170 transitions, 1592 flow. Second operand 4 states and 263 transitions. [2025-03-09 01:12:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 96 transitions, 857 flow [2025-03-09 01:12:12,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 546 flow, removed 51 selfloop flow, removed 41 redundant places. [2025-03-09 01:12:12,333 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 306 flow [2025-03-09 01:12:12,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-03-09 01:12:12,333 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2025-03-09 01:12:12,333 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 306 flow [2025-03-09 01:12:12,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 01:12:12,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:12,334 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] [2025-03-09 01:12:12,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 01:12:12,534 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 01:12:12,534 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 01:12:12,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash -313760288, now seen corresponding path program 1 times [2025-03-09 01:12:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78183236] [2025-03-09 01:12:12,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:12,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:12,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:12,541 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 01:12:12,541 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 01:12:12,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 01:12:12,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 01:12:12,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:12,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:12,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:12:12,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:12,692 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 01:12:12,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:12,820 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 01:12:12,827 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 01:12:12,827 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 01:12:12,843 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 01:12:12,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:12,843 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:12,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78183236] [2025-03-09 01:12:12,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78183236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:12,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:12,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:12:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683677937] [2025-03-09 01:12:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:12,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:12:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:12,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:12:12,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:12:12,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 126 [2025-03-09 01:12:12,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 01:12:12,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:12,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 126 [2025-03-09 01:12:12,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:13,084 INFO L124 PetriNetUnfolderBase]: 225/430 cut-off events. [2025-03-09 01:12:13,084 INFO L125 PetriNetUnfolderBase]: For 997/997 co-relation queries the response was YES. [2025-03-09 01:12:13,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 430 events. 225/430 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1385 event pairs, 87 based on Foata normal form. 3/432 useless extension candidates. Maximal degree in co-relation 1512. Up to 227 conditions per place. [2025-03-09 01:12:13,086 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 55 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2025-03-09 01:12:13,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 474 flow [2025-03-09 01:12:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:12:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:12:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2025-03-09 01:12:13,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37936507936507935 [2025-03-09 01:12:13,087 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 306 flow. Second operand 5 states and 239 transitions. [2025-03-09 01:12:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 474 flow [2025-03-09 01:12:13,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 01:12:13,089 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 298 flow [2025-03-09 01:12:13,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2025-03-09 01:12:13,089 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -33 predicate places. [2025-03-09 01:12:13,089 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 298 flow [2025-03-09 01:12:13,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 01:12:13,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:13,089 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] [2025-03-09 01:12:13,100 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 01:12:13,290 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 01:12:13,290 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:13,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 523225695, now seen corresponding path program 1 times [2025-03-09 01:12:13,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:13,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896313182] [2025-03-09 01:12:13,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:13,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:13,294 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 01:12:13,295 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 01:12:13,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 01:12:13,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 01:12:13,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:13,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:13,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:12:13,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:13,453 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 01:12:13,496 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-09 01:12:13,497 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 01:12:13,517 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 01:12:13,519 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 01:12:13,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:13,519 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:13,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896313182] [2025-03-09 01:12:13,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896313182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:13,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:13,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:12:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051748741] [2025-03-09 01:12:13,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:13,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:12:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:13,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:12:13,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:12:13,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-03-09 01:12:13,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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 01:12:13,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:13,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-03-09 01:12:13,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:12:13,766 INFO L124 PetriNetUnfolderBase]: 225/429 cut-off events. [2025-03-09 01:12:13,767 INFO L125 PetriNetUnfolderBase]: For 989/989 co-relation queries the response was YES. [2025-03-09 01:12:13,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 429 events. 225/429 cut-off events. For 989/989 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1377 event pairs, 127 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1475. Up to 294 conditions per place. [2025-03-09 01:12:13,768 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 56 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2025-03-09 01:12:13,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 470 flow [2025-03-09 01:12:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:12:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:12:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2025-03-09 01:12:13,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2025-03-09 01:12:13,769 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 298 flow. Second operand 4 states and 219 transitions. [2025-03-09 01:12:13,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 470 flow [2025-03-09 01:12:13,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 448 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:12:13,770 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 288 flow [2025-03-09 01:12:13,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2025-03-09 01:12:13,771 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -35 predicate places. [2025-03-09 01:12:13,771 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 288 flow [2025-03-09 01:12:13,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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 01:12:13,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:12:13,771 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] [2025-03-09 01:12:13,782 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 01:12:13,971 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 01:12:13,971 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-09 01:12:13,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:12:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2120641170, now seen corresponding path program 1 times [2025-03-09 01:12:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 01:12:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494481568] [2025-03-09 01:12:13,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:12:13,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:12:13,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:12:13,974 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 01:12:13,975 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 01:12:14,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 01:12:14,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:12:14,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:12:14,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:12:14,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 01:12:14,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:12:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:14,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 01:12:14,308 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:14,309 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 01:12:14,309 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 01:12:14,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:14,366 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 01:12:16,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 01:12:16,400 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 01:12:16,426 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 01:12:16,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:12:16,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 01:12:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494481568] [2025-03-09 01:12:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494481568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:12:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:12:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:12:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868232666] [2025-03-09 01:12:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:12:16,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 01:12:16,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 01:12:16,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 01:12:16,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-03-09 01:12:18,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:20,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:22,283 WARN L539 Checker$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 01:12:24,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:26,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:27,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:29,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:32,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:34,157 WARN L539 Checker$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 01:12:36,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:38,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:40,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:42,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:45,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:47,460 WARN L539 Checker$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 01:12:49,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:51,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:53,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:55,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:57,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:12:57,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 126 [2025-03-09 01:12:57,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 288 flow. Second operand has 9 states, 9 states have (on average 25.666666666666668) internal successors, (231), 9 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:12:57,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:12:57,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 126 [2025-03-09 01:12:57,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:13:02,248 WARN L539 Checker$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 01:13:06,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:08,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:11,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:13,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 01:13:20,064 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]