./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:58:32,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:58:33,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:58:33,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:58:33,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:58:33,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:58:33,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:58:33,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:58:33,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:58:33,049 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:58:33,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:58:33,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:58:33,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:58:33,050 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:58:33,051 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:58:33,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:58:33,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:58:33,051 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 -> 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 [2025-03-04 09:58:33,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:58:33,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:58:33,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:58:33,259 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:58:33,260 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:58:33,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2025-03-04 09:58:34,425 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1c08d31/aff5498f79364afd987ab4c1da739832/FLAG3c30da0f1 [2025-03-04 09:58:34,720 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:58:34,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2025-03-04 09:58:34,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1c08d31/aff5498f79364afd987ab4c1da739832/FLAG3c30da0f1 [2025-03-04 09:58:34,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1c08d31/aff5498f79364afd987ab4c1da739832 [2025-03-04 09:58:35,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:58:35,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:58:35,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:58:35,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:58:35,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:58:35,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:58:35" (1/1) ... [2025-03-04 09:58:35,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414ac8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:35, skipping insertion in model container [2025-03-04 09:58:35,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:58:35" (1/1) ... [2025-03-04 09:58:35,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:58:35,337 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:35,344 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:35,349 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:35,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:58:35,362 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 09:58:35,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ccf749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:35, skipping insertion in model container [2025-03-04 09:58:35,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:58:35,363 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:58:35,364 INFO L158 Benchmark]: Toolchain (without parser) took 361.01ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 111.3MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:58:35,364 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory was 125.5MB in the beginning and 125.2MB in the end (delta: 307.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:58:35,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.29ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 111.3MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:58:35,367 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory was 125.5MB in the beginning and 125.2MB in the end (delta: 307.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.29ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 111.3MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. 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-2_2-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:58:37,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:58:37,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:58:37,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:58:37,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:58:37,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:58:37,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:58:37,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:58:37,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:58:37,193 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:58:37,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:58:37,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:58:37,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:58:37,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:58:37,194 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:58:37,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:58:37,195 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:58:37,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:58:37,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:58:37,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:58:37,196 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:58:37,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:58:37,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:58:37,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:58:37,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:58:37,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:58:37,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:58:37,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:58:37,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:58:37,198 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 -> 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 [2025-03-04 09:58:37,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:58:37,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:58:37,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:58:37,470 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:58:37,471 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:58:37,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2025-03-04 09:58:38,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de025d8e7/551ffc7608554a1a8a6247a5be07cd8a/FLAG1d99c0fc9 [2025-03-04 09:58:38,906 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:58:38,906 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2025-03-04 09:58:38,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de025d8e7/551ffc7608554a1a8a6247a5be07cd8a/FLAG1d99c0fc9 [2025-03-04 09:58:38,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de025d8e7/551ffc7608554a1a8a6247a5be07cd8a [2025-03-04 09:58:38,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:58:38,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:58:38,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:58:38,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:58:38,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:58:38,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:58:38" (1/1) ... [2025-03-04 09:58:38,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ac6fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:38, skipping insertion in model container [2025-03-04 09:58:38,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:58:38" (1/1) ... [2025-03-04 09:58:39,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:58:39,285 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,305 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:58:39,327 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:58:39,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:58:39,403 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,406 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,408 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:58:39,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:58:39,416 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:58:39,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:58:39,514 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:58:39,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39 WrapperNode [2025-03-04 09:58:39,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:58:39,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:58:39,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:58:39,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:58:39,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,554 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 11, calls inlined = 14, statements flattened = 118 [2025-03-04 09:58:39,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:58:39,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:58:39,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:58:39,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:58:39,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,577 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 11, 2]. 73 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, 6, 2]. [2025-03-04 09:58:39,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,590 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:58:39,598 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:58:39,598 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:58:39,598 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:58:39,599 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (1/1) ... [2025-03-04 09:58:39,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:58:39,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:39,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:58:39,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:58:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-04 09:58:39,648 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:58:39,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:58:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:58:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:58:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:58:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:58:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:58:39,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:58:39,651 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:58:39,885 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:58:39,887 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:58:40,219 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:58:40,219 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:58:40,304 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:58:40,305 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:58:40,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:58:40 BoogieIcfgContainer [2025-03-04 09:58:40,305 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:58:40,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:58:40,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:58:40,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:58:40,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:58:38" (1/3) ... [2025-03-04 09:58:40,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a0ef7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:58:40, skipping insertion in model container [2025-03-04 09:58:40,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:58:39" (2/3) ... [2025-03-04 09:58:40,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a0ef7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:58:40, skipping insertion in model container [2025-03-04 09:58:40,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:58:40" (3/3) ... [2025-03-04 09:58:40,311 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2025-03-04 09:58:40,321 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:58:40,322 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_2-container_of.i that has 2 procedures, 82 locations, 1 initial locations, 0 loop locations, and 31 error locations. [2025-03-04 09:58:40,323 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:58:40,381 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 09:58:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 222 flow [2025-03-04 09:58:40,442 INFO L124 PetriNetUnfolderBase]: 14/137 cut-off events. [2025-03-04 09:58:40,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 09:58:40,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 14/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 434 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2025-03-04 09:58:40,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 222 flow [2025-03-04 09:58:40,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 102 transitions, 216 flow [2025-03-04 09:58:40,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:58:40,464 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;@300f66f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:58:40,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2025-03-04 09:58:40,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:58:40,467 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-04 09:58:40,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:58:40,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:40,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:58:40,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:40,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash 412842, now seen corresponding path program 1 times [2025-03-04 09:58:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:40,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21628072] [2025-03-04 09:58:40,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:40,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:40,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:58:40,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:58:40,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:58:40,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:40,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:40,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:58:40,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:40,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:58:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:40,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:40,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:40,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21628072] [2025-03-04 09:58:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21628072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743503454] [2025-03-04 09:58:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:40,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:40,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:40,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2025-03-04 09:58:40,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:40,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:40,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2025-03-04 09:58:40,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:41,595 INFO L124 PetriNetUnfolderBase]: 3071/7663 cut-off events. [2025-03-04 09:58:41,596 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-04 09:58:41,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12575 conditions, 7663 events. 3071/7663 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 74053 event pairs, 407 based on Foata normal form. 584/5609 useless extension candidates. Maximal degree in co-relation 12356. Up to 4146 conditions per place. [2025-03-04 09:58:41,645 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 72 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2025-03-04 09:58:41,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 110 transitions, 380 flow [2025-03-04 09:58:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2025-03-04 09:58:41,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2025-03-04 09:58:41,658 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 216 flow. Second operand 3 states and 198 transitions. [2025-03-04 09:58:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 110 transitions, 380 flow [2025-03-04 09:58:41,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 372 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:58:41,665 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 184 flow [2025-03-04 09:58:41,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2025-03-04 09:58:41,671 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -8 predicate places. [2025-03-04 09:58:41,672 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 184 flow [2025-03-04 09:58:41,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:41,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:41,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:58:41,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:58:41,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:41,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:41,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 412843, now seen corresponding path program 1 times [2025-03-04 09:58:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637478216] [2025-03-04 09:58:41,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:41,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:58:41,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:58:41,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:58:41,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:41,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:41,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:58:41,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:41,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:41,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:41,976 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637478216] [2025-03-04 09:58:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637478216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:41,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:41,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:41,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046980848] [2025-03-04 09:58:41,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:41,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:41,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:41,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:41,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:42,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2025-03-04 09:58:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:42,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2025-03-04 09:58:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:42,698 INFO L124 PetriNetUnfolderBase]: 3071/7661 cut-off events. [2025-03-04 09:58:42,698 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2025-03-04 09:58:42,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12691 conditions, 7661 events. 3071/7661 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 73840 event pairs, 407 based on Foata normal form. 1/5024 useless extension candidates. Maximal degree in co-relation 1458. Up to 4146 conditions per place. [2025-03-04 09:58:42,748 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 71 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2025-03-04 09:58:42,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 370 flow [2025-03-04 09:58:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2025-03-04 09:58:42,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2025-03-04 09:58:42,753 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 184 flow. Second operand 3 states and 192 transitions. [2025-03-04 09:58:42,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 370 flow [2025-03-04 09:58:42,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 108 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:58:42,758 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 180 flow [2025-03-04 09:58:42,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2025-03-04 09:58:42,759 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -10 predicate places. [2025-03-04 09:58:42,759 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 180 flow [2025-03-04 09:58:42,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:42,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:42,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-04 09:58:42,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 09:58:42,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:42,964 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:42,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash 12797427, now seen corresponding path program 1 times [2025-03-04 09:58:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594547659] [2025-03-04 09:58:42,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:42,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:42,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:42,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:58:43,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:58:43,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:58:43,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:43,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:43,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:58:43,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:43,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:43,052 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:43,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594547659] [2025-03-04 09:58:43,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594547659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:43,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:43,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:43,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363511891] [2025-03-04 09:58:43,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:43,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:43,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:43,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:43,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2025-03-04 09:58:43,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:43,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:43,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2025-03-04 09:58:43,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:43,604 INFO L124 PetriNetUnfolderBase]: 3070/6028 cut-off events. [2025-03-04 09:58:43,604 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-04 09:58:43,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11058 conditions, 6028 events. 3070/6028 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 45302 event pairs, 2805 based on Foata normal form. 1/4099 useless extension candidates. Maximal degree in co-relation 3361. Up to 4459 conditions per place. [2025-03-04 09:58:43,622 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 71 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2025-03-04 09:58:43,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 107 transitions, 368 flow [2025-03-04 09:58:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2025-03-04 09:58:43,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2025-03-04 09:58:43,624 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 180 flow. Second operand 3 states and 194 transitions. [2025-03-04 09:58:43,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 107 transitions, 368 flow [2025-03-04 09:58:43,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:58:43,629 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 178 flow [2025-03-04 09:58:43,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2025-03-04 09:58:43,630 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -10 predicate places. [2025-03-04 09:58:43,630 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 178 flow [2025-03-04 09:58:43,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:43,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:43,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:43,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 09:58:43,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:43,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:43,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash -153068383, now seen corresponding path program 1 times [2025-03-04 09:58:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:43,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350313746] [2025-03-04 09:58:43,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:43,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:43,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:43,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:58:43,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:58:43,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:58:43,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:43,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:43,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:58:43,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:43,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:58:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:43,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:43,973 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350313746] [2025-03-04 09:58:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350313746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:43,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:58:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187629934] [2025-03-04 09:58:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:43,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:43,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:43,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:58:44,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2025-03-04 09:58:44,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:44,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2025-03-04 09:58:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:44,839 INFO L124 PetriNetUnfolderBase]: 2554/6238 cut-off events. [2025-03-04 09:58:44,840 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2025-03-04 09:58:44,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10599 conditions, 6238 events. 2554/6238 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 56409 event pairs, 47 based on Foata normal form. 0/4242 useless extension candidates. Maximal degree in co-relation 9162. Up to 2287 conditions per place. [2025-03-04 09:58:44,859 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 135 selfloop transitions, 13 changer transitions 1/183 dead transitions. [2025-03-04 09:58:44,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 183 transitions, 675 flow [2025-03-04 09:58:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:58:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:58:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 485 transitions. [2025-03-04 09:58:44,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5829326923076923 [2025-03-04 09:58:44,864 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 178 flow. Second operand 8 states and 485 transitions. [2025-03-04 09:58:44,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 183 transitions, 675 flow [2025-03-04 09:58:44,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 183 transitions, 669 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:58:44,873 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 261 flow [2025-03-04 09:58:44,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2025-03-04 09:58:44,874 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2025-03-04 09:58:44,874 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 261 flow [2025-03-04 09:58:44,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:44,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:44,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:44,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:58:45,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:45,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:45,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -153068382, now seen corresponding path program 1 times [2025-03-04 09:58:45,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374247152] [2025-03-04 09:58:45,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:45,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:45,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:45,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:45,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:58:45,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:58:45,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:58:45,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:45,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:45,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 09:58:45,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:45,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:45,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:45,246 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374247152] [2025-03-04 09:58:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374247152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:45,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:58:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063180475] [2025-03-04 09:58:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:45,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:45,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:45,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:58:45,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2025-03-04 09:58:45,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:45,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:45,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2025-03-04 09:58:45,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:46,198 INFO L124 PetriNetUnfolderBase]: 1721/4271 cut-off events. [2025-03-04 09:58:46,198 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2025-03-04 09:58:46,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8298 conditions, 4271 events. 1721/4271 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 36328 event pairs, 95 based on Foata normal form. 450/3721 useless extension candidates. Maximal degree in co-relation 7164. Up to 1957 conditions per place. [2025-03-04 09:58:46,215 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 120 selfloop transitions, 10 changer transitions 2/166 dead transitions. [2025-03-04 09:58:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 166 transitions, 685 flow [2025-03-04 09:58:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:58:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:58:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2025-03-04 09:58:46,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5782967032967034 [2025-03-04 09:58:46,217 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 261 flow. Second operand 7 states and 421 transitions. [2025-03-04 09:58:46,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 166 transitions, 685 flow [2025-03-04 09:58:46,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 685 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:58:46,224 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 312 flow [2025-03-04 09:58:46,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2025-03-04 09:58:46,225 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 8 predicate places. [2025-03-04 09:58:46,225 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 312 flow [2025-03-04 09:58:46,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:46,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:46,225 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:46,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:58:46,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:46,431 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:46,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash -453384544, now seen corresponding path program 1 times [2025-03-04 09:58:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:46,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371446468] [2025-03-04 09:58:46,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:46,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:46,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:46,434 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:46,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:58:46,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:58:46,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:58:46,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:46,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:46,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:58:46,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:46,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:58:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:46,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:46,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371446468] [2025-03-04 09:58:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371446468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:46,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962400858] [2025-03-04 09:58:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:46,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:46,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:46,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:46,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:46,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 104 [2025-03-04 09:58:46,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:46,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:46,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 104 [2025-03-04 09:58:46,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:47,058 INFO L124 PetriNetUnfolderBase]: 1973/3899 cut-off events. [2025-03-04 09:58:47,058 INFO L125 PetriNetUnfolderBase]: For 3268/3268 co-relation queries the response was YES. [2025-03-04 09:58:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9077 conditions, 3899 events. 1973/3899 cut-off events. For 3268/3268 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 26636 event pairs, 1470 based on Foata normal form. 0/3246 useless extension candidates. Maximal degree in co-relation 7939. Up to 2462 conditions per place. [2025-03-04 09:58:47,070 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 73 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2025-03-04 09:58:47,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 105 transitions, 492 flow [2025-03-04 09:58:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2025-03-04 09:58:47,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2025-03-04 09:58:47,072 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 312 flow. Second operand 3 states and 174 transitions. [2025-03-04 09:58:47,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 105 transitions, 492 flow [2025-03-04 09:58:47,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 105 transitions, 475 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 09:58:47,077 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 297 flow [2025-03-04 09:58:47,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2025-03-04 09:58:47,078 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2025-03-04 09:58:47,078 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 297 flow [2025-03-04 09:58:47,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:47,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:47,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:47,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:58:47,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:47,279 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:47,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash -453384543, now seen corresponding path program 1 times [2025-03-04 09:58:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215038362] [2025-03-04 09:58:47,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:47,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:47,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:58:47,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:58:47,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:58:47,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:47,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:47,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:58:47,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:47,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:47,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:47,419 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:47,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215038362] [2025-03-04 09:58:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215038362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589380303] [2025-03-04 09:58:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:47,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:47,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:47,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:47,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2025-03-04 09:58:47,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:47,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:47,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2025-03-04 09:58:47,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:47,822 INFO L124 PetriNetUnfolderBase]: 1721/3468 cut-off events. [2025-03-04 09:58:47,823 INFO L125 PetriNetUnfolderBase]: For 2284/2284 co-relation queries the response was YES. [2025-03-04 09:58:47,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 3468 events. 1721/3468 cut-off events. For 2284/2284 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23726 event pairs, 1073 based on Foata normal form. 146/3011 useless extension candidates. Maximal degree in co-relation 6954. Up to 1744 conditions per place. [2025-03-04 09:58:47,835 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 84 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2025-03-04 09:58:47,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 113 transitions, 531 flow [2025-03-04 09:58:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2025-03-04 09:58:47,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2025-03-04 09:58:47,837 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 297 flow. Second operand 3 states and 189 transitions. [2025-03-04 09:58:47,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 113 transitions, 531 flow [2025-03-04 09:58:47,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 113 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:58:47,843 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 317 flow [2025-03-04 09:58:47,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2025-03-04 09:58:47,845 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 1 predicate places. [2025-03-04 09:58:47,846 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 317 flow [2025-03-04 09:58:47,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:47,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:47,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:47,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:58:48,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:48,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:48,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1071727812, now seen corresponding path program 1 times [2025-03-04 09:58:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778268157] [2025-03-04 09:58:48,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:48,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:48,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:58:48,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:58:48,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:58:48,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:48,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:48,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 09:58:48,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:48,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:48,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:48,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778268157] [2025-03-04 09:58:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778268157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:58:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832717551] [2025-03-04 09:58:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:48,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:48,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:48,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:58:48,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2025-03-04 09:58:48,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:48,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:48,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2025-03-04 09:58:48,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:48,925 INFO L124 PetriNetUnfolderBase]: 1301/2846 cut-off events. [2025-03-04 09:58:48,925 INFO L125 PetriNetUnfolderBase]: For 1702/1702 co-relation queries the response was YES. [2025-03-04 09:58:48,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 2846 events. 1301/2846 cut-off events. For 1702/1702 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19557 event pairs, 83 based on Foata normal form. 0/2525 useless extension candidates. Maximal degree in co-relation 5720. Up to 1488 conditions per place. [2025-03-04 09:58:48,932 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 116 selfloop transitions, 13 changer transitions 1/159 dead transitions. [2025-03-04 09:58:48,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 159 transitions, 820 flow [2025-03-04 09:58:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:58:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:58:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 408 transitions. [2025-03-04 09:58:48,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5604395604395604 [2025-03-04 09:58:48,934 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 317 flow. Second operand 7 states and 408 transitions. [2025-03-04 09:58:48,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 159 transitions, 820 flow [2025-03-04 09:58:48,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 159 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:58:48,938 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 390 flow [2025-03-04 09:58:48,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2025-03-04 09:58:48,939 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 8 predicate places. [2025-03-04 09:58:48,939 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 390 flow [2025-03-04 09:58:48,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:48,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:48,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:48,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:58:49,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:49,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:49,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1071727813, now seen corresponding path program 1 times [2025-03-04 09:58:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:49,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197520069] [2025-03-04 09:58:49,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:49,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:49,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:49,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:49,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:58:49,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:58:49,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:58:49,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:49,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:49,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:58:49,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:49,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:49,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:49,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197520069] [2025-03-04 09:58:49,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197520069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:49,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:58:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715559606] [2025-03-04 09:58:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:49,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:58:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:49,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:58:49,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:58:49,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2025-03-04 09:58:49,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 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) [2025-03-04 09:58:49,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:49,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2025-03-04 09:58:49,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:50,062 INFO L124 PetriNetUnfolderBase]: 1070/2320 cut-off events. [2025-03-04 09:58:50,062 INFO L125 PetriNetUnfolderBase]: For 2087/2087 co-relation queries the response was YES. [2025-03-04 09:58:50,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 2320 events. 1070/2320 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15346 event pairs, 143 based on Foata normal form. 0/2230 useless extension candidates. Maximal degree in co-relation 4937. Up to 794 conditions per place. [2025-03-04 09:58:50,070 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 118 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2025-03-04 09:58:50,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 164 transitions, 902 flow [2025-03-04 09:58:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:58:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 09:58:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 450 transitions. [2025-03-04 09:58:50,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5408653846153846 [2025-03-04 09:58:50,071 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 390 flow. Second operand 8 states and 450 transitions. [2025-03-04 09:58:50,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 164 transitions, 902 flow [2025-03-04 09:58:50,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 899 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:58:50,078 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 502 flow [2025-03-04 09:58:50,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2025-03-04 09:58:50,079 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 19 predicate places. [2025-03-04 09:58:50,079 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 502 flow [2025-03-04 09:58:50,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 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) [2025-03-04 09:58:50,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:50,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:50,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:58:50,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:50,280 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:50,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash 239192515, now seen corresponding path program 1 times [2025-03-04 09:58:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796506489] [2025-03-04 09:58:50,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:50,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:50,283 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:50,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:58:50,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:58:50,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:58:50,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:50,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:50,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-04 09:58:50,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:50,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:58:50,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:58:50,541 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:58:50,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:58:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:50,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:50,555 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:50,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796506489] [2025-03-04 09:58:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796506489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:50,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:50,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:58:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428372260] [2025-03-04 09:58:50,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:50,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:58:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:50,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:58:50,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:58:50,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2025-03-04 09:58:50,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:50,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:50,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2025-03-04 09:58:50,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:51,680 INFO L124 PetriNetUnfolderBase]: 1229/2612 cut-off events. [2025-03-04 09:58:51,680 INFO L125 PetriNetUnfolderBase]: For 4446/4446 co-relation queries the response was YES. [2025-03-04 09:58:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 2612 events. 1229/2612 cut-off events. For 4446/4446 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17885 event pairs, 296 based on Foata normal form. 27/2627 useless extension candidates. Maximal degree in co-relation 6542. Up to 745 conditions per place. [2025-03-04 09:58:51,690 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 132 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2025-03-04 09:58:51,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1091 flow [2025-03-04 09:58:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:58:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:58:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 498 transitions. [2025-03-04 09:58:51,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2025-03-04 09:58:51,692 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 502 flow. Second operand 9 states and 498 transitions. [2025-03-04 09:58:51,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1091 flow [2025-03-04 09:58:51,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 178 transitions, 1057 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 09:58:51,698 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 510 flow [2025-03-04 09:58:51,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=510, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2025-03-04 09:58:51,698 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 19 predicate places. [2025-03-04 09:58:51,699 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 510 flow [2025-03-04 09:58:51,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:51,699 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:51,699 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:51,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 09:58:51,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:51,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:51,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 941992007, now seen corresponding path program 1 times [2025-03-04 09:58:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:51,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142435588] [2025-03-04 09:58:51,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:51,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:51,906 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:51,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:58:51,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:58:52,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:58:52,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:52,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:52,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-04 09:58:52,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:52,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:52,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:58:52,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:58:52,140 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:58:52,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:58:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:52,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:52,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:52,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142435588] [2025-03-04 09:58:52,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142435588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:52,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:52,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:58:52,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510757400] [2025-03-04 09:58:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:52,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:58:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:52,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:58:52,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:58:52,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2025-03-04 09:58:52,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:52,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:52,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2025-03-04 09:58:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:53,537 INFO L124 PetriNetUnfolderBase]: 1476/3057 cut-off events. [2025-03-04 09:58:53,537 INFO L125 PetriNetUnfolderBase]: For 5149/5149 co-relation queries the response was YES. [2025-03-04 09:58:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9182 conditions, 3057 events. 1476/3057 cut-off events. For 5149/5149 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21659 event pairs, 488 based on Foata normal form. 24/3072 useless extension candidates. Maximal degree in co-relation 6601. Up to 701 conditions per place. [2025-03-04 09:58:53,550 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 134 selfloop transitions, 18 changer transitions 0/180 dead transitions. [2025-03-04 09:58:53,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 180 transitions, 1132 flow [2025-03-04 09:58:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:58:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:58:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 497 transitions. [2025-03-04 09:58:53,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.530982905982906 [2025-03-04 09:58:53,552 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 510 flow. Second operand 9 states and 497 transitions. [2025-03-04 09:58:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 180 transitions, 1132 flow [2025-03-04 09:58:53,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 180 transitions, 1088 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-04 09:58:53,562 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 506 flow [2025-03-04 09:58:53,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=506, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2025-03-04 09:58:53,563 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 17 predicate places. [2025-03-04 09:58:53,563 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 506 flow [2025-03-04 09:58:53,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:53,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:53,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:53,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:58:53,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:53,765 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:53,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash -283769594, now seen corresponding path program 1 times [2025-03-04 09:58:53,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:53,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388800233] [2025-03-04 09:58:53,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:53,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:53,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:53,768 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:53,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:58:53,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:58:53,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:58:53,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:53,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:53,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:58:53,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:53,908 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,913 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,913 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,916 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 [2025-03-04 09:58:53,948 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,949 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,949 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:58:53,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:58:53,959 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 73 treesize of output 93 [2025-03-04 09:58:54,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:58:54,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2025-03-04 09:58:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:54,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:54,086 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388800233] [2025-03-04 09:58:54,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388800233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:54,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:54,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:58:54,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282893819] [2025-03-04 09:58:54,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:54,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:54,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:54,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:58:54,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2025-03-04 09:58:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:54,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2025-03-04 09:58:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:56,103 INFO L124 PetriNetUnfolderBase]: 1944/3749 cut-off events. [2025-03-04 09:58:56,104 INFO L125 PetriNetUnfolderBase]: For 8108/8108 co-relation queries the response was YES. [2025-03-04 09:58:56,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11843 conditions, 3749 events. 1944/3749 cut-off events. For 8108/8108 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 26397 event pairs, 1162 based on Foata normal form. 140/3873 useless extension candidates. Maximal degree in co-relation 8868. Up to 2848 conditions per place. [2025-03-04 09:58:56,120 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 98 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2025-03-04 09:58:56,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1036 flow [2025-03-04 09:58:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:58:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 09:58:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 327 transitions. [2025-03-04 09:58:56,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5240384615384616 [2025-03-04 09:58:56,122 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 506 flow. Second operand 6 states and 327 transitions. [2025-03-04 09:58:56,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1036 flow [2025-03-04 09:58:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 993 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 09:58:56,135 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 766 flow [2025-03-04 09:58:56,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2025-03-04 09:58:56,135 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 20 predicate places. [2025-03-04 09:58:56,135 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 766 flow [2025-03-04 09:58:56,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:56,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:56,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:56,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:58:56,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:56,337 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:56,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:56,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1246141460, now seen corresponding path program 1 times [2025-03-04 09:58:56,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:56,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704646114] [2025-03-04 09:58:56,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:56,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:56,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:58:56,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:58:56,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:58:56,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:56,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:56,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:58:56,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:56,525 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_91| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_91|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_91| (_ bv0 1)) |c_#valid|))) is different from true [2025-03-04 09:58:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:56,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:56,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704646114] [2025-03-04 09:58:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704646114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:58:56,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851033324] [2025-03-04 09:58:56,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:56,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:56,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:56,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-04 09:58:56,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 104 [2025-03-04 09:58:56,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 127 transitions, 766 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:56,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:56,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 104 [2025-03-04 09:58:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:57,204 INFO L124 PetriNetUnfolderBase]: 1965/3750 cut-off events. [2025-03-04 09:58:57,204 INFO L125 PetriNetUnfolderBase]: For 8647/8647 co-relation queries the response was YES. [2025-03-04 09:58:57,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13326 conditions, 3750 events. 1965/3750 cut-off events. For 8647/8647 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25777 event pairs, 775 based on Foata normal form. 0/3737 useless extension candidates. Maximal degree in co-relation 11493. Up to 1607 conditions per place. [2025-03-04 09:58:57,224 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 112 selfloop transitions, 33 changer transitions 4/165 dead transitions. [2025-03-04 09:58:57,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 165 transitions, 1272 flow [2025-03-04 09:58:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:58:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:58:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2025-03-04 09:58:57,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2025-03-04 09:58:57,226 INFO L175 Difference]: Start difference. First operand has 118 places, 127 transitions, 766 flow. Second operand 5 states and 210 transitions. [2025-03-04 09:58:57,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 165 transitions, 1272 flow [2025-03-04 09:58:57,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 1272 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:58:57,244 INFO L231 Difference]: Finished difference. Result has 125 places, 141 transitions, 1019 flow [2025-03-04 09:58:57,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1019, PETRI_PLACES=125, PETRI_TRANSITIONS=141} [2025-03-04 09:58:57,246 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2025-03-04 09:58:57,246 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 141 transitions, 1019 flow [2025-03-04 09:58:57,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:57,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:57,246 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:57,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:58:57,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:57,447 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:57,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash 235030553, now seen corresponding path program 1 times [2025-03-04 09:58:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644676568] [2025-03-04 09:58:57,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:57,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:57,450 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:57,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:58:57,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:58:57,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:58:57,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:57,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:57,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:58:57,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:57,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:58:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:57,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:57,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:57,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644676568] [2025-03-04 09:58:57,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644676568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:57,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:57,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:57,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560751751] [2025-03-04 09:58:57,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:57,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:57,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:57,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:57,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2025-03-04 09:58:57,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 141 transitions, 1019 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:57,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:57,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2025-03-04 09:58:57,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:58,033 INFO L124 PetriNetUnfolderBase]: 1872/3619 cut-off events. [2025-03-04 09:58:58,033 INFO L125 PetriNetUnfolderBase]: For 12632/12728 co-relation queries the response was YES. [2025-03-04 09:58:58,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14870 conditions, 3619 events. 1872/3619 cut-off events. For 12632/12728 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 25126 event pairs, 952 based on Foata normal form. 1/3598 useless extension candidates. Maximal degree in co-relation 12954. Up to 3088 conditions per place. [2025-03-04 09:58:58,044 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 114 selfloop transitions, 5 changer transitions 0/147 dead transitions. [2025-03-04 09:58:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 1293 flow [2025-03-04 09:58:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2025-03-04 09:58:58,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5544871794871795 [2025-03-04 09:58:58,046 INFO L175 Difference]: Start difference. First operand has 125 places, 141 transitions, 1019 flow. Second operand 3 states and 173 transitions. [2025-03-04 09:58:58,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 1293 flow [2025-03-04 09:58:58,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 147 transitions, 1216 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-04 09:58:58,068 INFO L231 Difference]: Finished difference. Result has 121 places, 139 transitions, 948 flow [2025-03-04 09:58:58,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=948, PETRI_PLACES=121, PETRI_TRANSITIONS=139} [2025-03-04 09:58:58,069 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 23 predicate places. [2025-03-04 09:58:58,069 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 139 transitions, 948 flow [2025-03-04 09:58:58,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:58,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:58,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:58:58,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:58:58,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:58,270 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:58,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 235030552, now seen corresponding path program 1 times [2025-03-04 09:58:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:58,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808131488] [2025-03-04 09:58:58,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:58,272 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:58,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:58:58,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:58:58,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:58:58,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:58,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:58,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:58:58,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:58,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:58:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:58,387 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:58,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808131488] [2025-03-04 09:58:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808131488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:58:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803201011] [2025-03-04 09:58:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:58,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:58:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:58,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:58:58,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:58:58,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2025-03-04 09:58:58,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:58,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:58,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2025-03-04 09:58:58,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:58,797 INFO L124 PetriNetUnfolderBase]: 1872/3612 cut-off events. [2025-03-04 09:58:58,797 INFO L125 PetriNetUnfolderBase]: For 11356/11452 co-relation queries the response was YES. [2025-03-04 09:58:58,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14621 conditions, 3612 events. 1872/3612 cut-off events. For 11356/11452 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24997 event pairs, 952 based on Foata normal form. 1/3591 useless extension candidates. Maximal degree in co-relation 14056. Up to 3088 conditions per place. [2025-03-04 09:58:58,811 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 114 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2025-03-04 09:58:58,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 145 transitions, 1222 flow [2025-03-04 09:58:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:58:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:58:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2025-03-04 09:58:58,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5544871794871795 [2025-03-04 09:58:58,812 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 948 flow. Second operand 3 states and 173 transitions. [2025-03-04 09:58:58,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 145 transitions, 1222 flow [2025-03-04 09:58:58,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 145 transitions, 1212 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:58:58,858 INFO L231 Difference]: Finished difference. Result has 119 places, 137 transitions, 944 flow [2025-03-04 09:58:58,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=944, PETRI_PLACES=119, PETRI_TRANSITIONS=137} [2025-03-04 09:58:58,858 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 21 predicate places. [2025-03-04 09:58:58,858 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 137 transitions, 944 flow [2025-03-04 09:58:58,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:58,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:58,859 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] [2025-03-04 09:58:58,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 09:58:59,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:59,059 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:59,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -640499701, now seen corresponding path program 1 times [2025-03-04 09:58:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842732755] [2025-03-04 09:58:59,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:59,062 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:58:59,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:58:59,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:58:59,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:58:59,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:59,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:59,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:58:59,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:59,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:59,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842732755] [2025-03-04 09:58:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842732755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:58:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811588993] [2025-03-04 09:58:59,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:59,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:58:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:59,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:58:59,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:58:59,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2025-03-04 09:58:59,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 137 transitions, 944 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:59,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:59,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2025-03-04 09:58:59,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:58:59,395 INFO L124 PetriNetUnfolderBase]: 225/430 cut-off events. [2025-03-04 09:58:59,395 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2025-03-04 09:58:59,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 430 events. 225/430 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1489 event pairs, 35 based on Foata normal form. 36/465 useless extension candidates. Maximal degree in co-relation 1606. Up to 226 conditions per place. [2025-03-04 09:58:59,397 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 57 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2025-03-04 09:58:59,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 83 transitions, 527 flow [2025-03-04 09:58:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:58:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:58:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2025-03-04 09:58:59,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2025-03-04 09:58:59,398 INFO L175 Difference]: Start difference. First operand has 119 places, 137 transitions, 944 flow. Second operand 4 states and 216 transitions. [2025-03-04 09:58:59,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 83 transitions, 527 flow [2025-03-04 09:58:59,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 378 flow, removed 26 selfloop flow, removed 26 redundant places. [2025-03-04 09:58:59,401 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 202 flow [2025-03-04 09:58:59,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2025-03-04 09:58:59,401 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2025-03-04 09:58:59,401 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 202 flow [2025-03-04 09:58:59,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:59,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:58:59,402 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] [2025-03-04 09:58:59,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 09:58:59,602 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 [2025-03-04 09:58:59,602 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:58:59,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:58:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 664302799, now seen corresponding path program 1 times [2025-03-04 09:58:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:58:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630452798] [2025-03-04 09:58:59,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:58:59,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:58:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:58:59,606 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) [2025-03-04 09:58:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:58:59,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 09:58:59,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 09:58:59,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:58:59,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:58:59,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:58:59,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:58:59,813 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 09:58:59,813 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 [2025-03-04 09:58:59,840 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 [2025-03-04 09:58:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:58:59,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:58:59,844 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:58:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630452798] [2025-03-04 09:58:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630452798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:58:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:58:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:58:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261522807] [2025-03-04 09:58:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:58:59,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:58:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:58:59,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:58:59,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:58:59,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2025-03-04 09:58:59,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:58:59,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:58:59,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2025-03-04 09:58:59,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:00,184 INFO L124 PetriNetUnfolderBase]: 225/429 cut-off events. [2025-03-04 09:59:00,184 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2025-03-04 09:59:00,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 429 events. 225/429 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1399 event pairs, 95 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1229. Up to 183 conditions per place. [2025-03-04 09:59:00,186 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 53 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2025-03-04 09:59:00,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 384 flow [2025-03-04 09:59:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:59:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:59:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2025-03-04 09:59:00,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40192307692307694 [2025-03-04 09:59:00,187 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 202 flow. Second operand 5 states and 209 transitions. [2025-03-04 09:59:00,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 384 flow [2025-03-04 09:59:00,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 372 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 09:59:00,189 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 210 flow [2025-03-04 09:59:00,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2025-03-04 09:59:00,189 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2025-03-04 09:59:00,189 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 210 flow [2025-03-04 09:59:00,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:59:00,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:00,189 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] [2025-03-04 09:59:00,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:59:00,390 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 [2025-03-04 09:59:00,390 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:59:00,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash -699046770, now seen corresponding path program 1 times [2025-03-04 09:59:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:59:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23069323] [2025-03-04 09:59:00,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:00,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:59:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:59:00,394 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) [2025-03-04 09:59:00,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:59:00,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 09:59:00,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 09:59:00,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:00,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:00,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:59:00,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:59:00,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:59:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:00,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:59:00,683 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:59:00,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:59:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:00,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:59:00,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:59:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23069323] [2025-03-04 09:59:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23069323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:00,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:00,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:59:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231265319] [2025-03-04 09:59:00,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:00,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:59:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:59:00,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:59:00,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:59:00,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 104 [2025-03-04 09:59:00,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:59:00,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:00,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 104 [2025-03-04 09:59:00,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:00,933 INFO L124 PetriNetUnfolderBase]: 225/423 cut-off events. [2025-03-04 09:59:00,933 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2025-03-04 09:59:00,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 423 events. 225/423 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1392 event pairs, 95 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1225. Up to 227 conditions per place. [2025-03-04 09:59:00,934 INFO L140 encePairwiseOnDemand]: 93/104 looper letters, 48 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2025-03-04 09:59:00,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 338 flow [2025-03-04 09:59:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:59:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:59:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2025-03-04 09:59:00,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2025-03-04 09:59:00,935 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 210 flow. Second operand 5 states and 184 transitions. [2025-03-04 09:59:00,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 338 flow [2025-03-04 09:59:00,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 316 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:59:00,936 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 192 flow [2025-03-04 09:59:00,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2025-03-04 09:59:00,937 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2025-03-04 09:59:00,937 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 192 flow [2025-03-04 09:59:00,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:59:00,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:00,937 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] [2025-03-04 09:59:00,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:59:01,137 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 [2025-03-04 09:59:01,137 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:59:01,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 994489231, now seen corresponding path program 1 times [2025-03-04 09:59:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:59:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149432971] [2025-03-04 09:59:01,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:59:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:59:01,140 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) [2025-03-04 09:59:01,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:59:01,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 09:59:01,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 09:59:01,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:01,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:01,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-04 09:59:01,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:59:01,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:59:01,343 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,343 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,344 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2025-03-04 09:59:01,610 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,610 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,611 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 0 case distinctions, treesize of input 60 treesize of output 69 [2025-03-04 09:59:01,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:01,899 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,899 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:01,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2025-03-04 09:59:02,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 79 [2025-03-04 09:59:02,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 09:59:02,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:59:02,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 101 [2025-03-04 09:59:06,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:59:06,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 133 treesize of output 69 [2025-03-04 09:59:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:06,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:59:06,275 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:59:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149432971] [2025-03-04 09:59:06,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149432971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:06,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-04 09:59:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810450960] [2025-03-04 09:59:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:06,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:59:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:59:06,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:59:06,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=171, Unknown=2, NotChecked=0, Total=210 [2025-03-04 09:59:07,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:09,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:11,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:13,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:15,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:17,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:19,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:21,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:23,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:25,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:27,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:29,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:31,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:33,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:33,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 104 [2025-03-04 09:59:33,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 192 flow. Second operand has 15 states, 15 states have (on average 17.8) internal successors, (267), 15 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:59:33,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:33,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 104 [2025-03-04 09:59:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:39,669 INFO L124 PetriNetUnfolderBase]: 440/807 cut-off events. [2025-03-04 09:59:39,669 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2025-03-04 09:59:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 807 events. 440/807 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3377 event pairs, 12 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 2259. Up to 260 conditions per place. [2025-03-04 09:59:39,672 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 115 selfloop transitions, 68 changer transitions 0/189 dead transitions. [2025-03-04 09:59:39,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 189 transitions, 1036 flow [2025-03-04 09:59:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 09:59:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-04 09:59:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 504 transitions. [2025-03-04 09:59:39,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23076923076923078 [2025-03-04 09:59:39,674 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 192 flow. Second operand 21 states and 504 transitions. [2025-03-04 09:59:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 189 transitions, 1036 flow [2025-03-04 09:59:39,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 189 transitions, 990 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 09:59:39,677 INFO L231 Difference]: Finished difference. Result has 97 places, 130 transitions, 733 flow [2025-03-04 09:59:39,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=733, PETRI_PLACES=97, PETRI_TRANSITIONS=130} [2025-03-04 09:59:39,677 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2025-03-04 09:59:39,677 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 130 transitions, 733 flow [2025-03-04 09:59:39,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.8) internal successors, (267), 15 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:59:39,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:39,677 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] [2025-03-04 09:59:39,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-04 09:59:39,879 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 [2025-03-04 09:59:39,879 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2025-03-04 09:59:39,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash -619261939, now seen corresponding path program 2 times [2025-03-04 09:59:39,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:59:39,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336862409] [2025-03-04 09:59:39,880 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:59:39,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:59:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:59:39,882 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) [2025-03-04 09:59:39,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:59:40,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-03-04 09:59:40,045 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 09:59:40,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 09:59:40,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:40,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-04 09:59:40,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:59:40,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:59:40,102 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,102 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,102 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2025-03-04 09:59:40,385 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,386 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,386 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 0 case distinctions, treesize of input 60 treesize of output 69 [2025-03-04 09:59:40,466 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 0 case distinctions, treesize of input 57 treesize of output 29 [2025-03-04 09:59:40,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:40,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:59:40,505 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,505 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:59:40,506 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 [2025-03-04 09:59:40,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 09:59:40,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:59:40,599 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 65 treesize of output 85 [2025-03-04 09:59:44,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:59:44,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 133 treesize of output 69 [2025-03-04 09:59:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:44,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:59:44,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:59:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336862409] [2025-03-04 09:59:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336862409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:44,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-04 09:59:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118809311] [2025-03-04 09:59:44,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:44,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:59:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:59:44,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:59:44,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=148, Unknown=2, NotChecked=0, Total=182 [2025-03-04 09:59:45,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:48,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:50,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:52,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:55,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:57,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:59:59,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:01,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:02,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:04,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:06,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:07,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:10,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:11,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 10:00:14,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]