./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:15:48,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:15:48,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:15:48,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:15:48,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:15:48,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:15:48,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:15:48,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:15:48,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:15:48,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:15:48,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:15:48,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:15:48,929 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:15:48,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:15:48,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:15:48,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:15:48,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:15:48,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:15:48,933 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:15:48,933 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:15:48,934 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:15:48,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:15:48,935 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:15:48,936 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:15:48,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:15:48,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:15:48,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:15:48,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:15:48,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:15:48,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:48,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:15:48,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:15:48,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:15:48,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:15:48,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:15:48,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:15:48,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:15:48,943 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:15:48,943 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2023-11-06 22:15:49,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:15:49,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:15:49,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:15:49,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:15:49,321 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:15:49,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-06 22:15:52,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:15:52,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:15:52,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-06 22:15:52,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/0dea95fce/922a3c02701442e598276fc17e1c082d/FLAG6132b1d95 [2023-11-06 22:15:52,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/0dea95fce/922a3c02701442e598276fc17e1c082d [2023-11-06 22:15:52,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:15:52,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:15:52,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:52,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:15:52,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:15:52,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:52" (1/1) ... [2023-11-06 22:15:52,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735df687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:52, skipping insertion in model container [2023-11-06 22:15:52,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:52" (1/1) ... [2023-11-06 22:15:53,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:15:53,172 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:15:53,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:15:53,825 ERROR L324 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) [2023-11-06 22:15:53,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@567b1624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:53, skipping insertion in model container [2023-11-06 22:15:53,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:15:53,826 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:15:53,828 INFO L158 Benchmark]: Toolchain (without parser) took 907.71ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 100.3MB in the end (delta: -3.0MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:53,829 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 136.3MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:15:53,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 904.54ms. Allocated memory is still 136.3MB. Free memory was 97.0MB in the beginning and 100.3MB in the end (delta: -3.4MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:53,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 136.3MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 904.54ms. Allocated memory is still 136.3MB. Free memory was 97.0MB in the beginning and 100.3MB in the end (delta: -3.4MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:15:56,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:15:56,341 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:15:56,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:15:56,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:15:56,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:15:56,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:15:56,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:15:56,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:15:56,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:15:56,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:15:56,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:15:56,382 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:15:56,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:15:56,383 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:15:56,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:15:56,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:15:56,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:15:56,385 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:15:56,386 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:15:56,387 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:15:56,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:15:56,388 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:15:56,388 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:15:56,389 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:15:56,390 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:15:56,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:15:56,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:15:56,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:15:56,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:15:56,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:15:56,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:15:56,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:15:56,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:15:56,401 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:15:56,402 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:15:56,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:15:56,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:15:56,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:15:56,404 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:15:56,404 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:15:56,405 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2023-11-06 22:15:56,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:15:56,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:15:56,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:15:56,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:15:56,826 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:15:56,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-06 22:16:00,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:16:00,531 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:16:00,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-06 22:16:00,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/b4f4a8d9c/bf5d96b0b9db4528932c9aa5f8b332a8/FLAGef647c97c [2023-11-06 22:16:00,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/data/b4f4a8d9c/bf5d96b0b9db4528932c9aa5f8b332a8 [2023-11-06 22:16:00,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:16:00,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:16:00,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:00,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:16:00,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:16:00,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:00" (1/1) ... [2023-11-06 22:16:00,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbd1ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:00, skipping insertion in model container [2023-11-06 22:16:00,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:00" (1/1) ... [2023-11-06 22:16:00,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:00,950 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:16:01,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:01,660 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:16:01,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:01,690 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:16:01,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:01,792 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:16:01,803 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:16:01,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:02,116 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:02,117 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:02,117 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:16:02,127 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:16:02,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02 WrapperNode [2023-11-06 22:16:02,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:02,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:02,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:16:02,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:16:02,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,245 INFO L138 Inliner]: procedures = 472, calls = 53, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 151 [2023-11-06 22:16:02,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:02,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:16:02,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:16:02,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:16:02,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:16:02,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:16:02,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:16:02,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:16:02,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (1/1) ... [2023-11-06 22:16:02,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:02,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:02,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:02,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e0640b-c221-4b37-b926-b0cf777c0594/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:16:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:16:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:16:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:16:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 22:16:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:16:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:16:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:16:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:16:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:16:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:16:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-06 22:16:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-06 22:16:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:16:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:16:02,463 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:16:02,792 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:16:02,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:16:03,541 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:16:03,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:16:03,572 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:16:03,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:03 BoogieIcfgContainer [2023-11-06 22:16:03,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:16:03,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:16:03,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:16:03,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:16:03,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:16:00" (1/3) ... [2023-11-06 22:16:03,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d92a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:03, skipping insertion in model container [2023-11-06 22:16:03,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:02" (2/3) ... [2023-11-06 22:16:03,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d92a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:03, skipping insertion in model container [2023-11-06 22:16:03,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:03" (3/3) ... [2023-11-06 22:16:03,587 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-06 22:16:03,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:16:03,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-06 22:16:03,609 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:16:03,730 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:16:03,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 264 transitions, 542 flow [2023-11-06 22:16:03,963 INFO L124 PetriNetUnfolderBase]: 18/332 cut-off events. [2023-11-06 22:16:03,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:16:03,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 332 events. 18/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 839 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 185. Up to 4 conditions per place. [2023-11-06 22:16:03,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 264 transitions, 542 flow [2023-11-06 22:16:03,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 262 transitions, 536 flow [2023-11-06 22:16:03,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:16:04,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 262 transitions, 536 flow [2023-11-06 22:16:04,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 262 transitions, 536 flow [2023-11-06 22:16:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 262 transitions, 536 flow [2023-11-06 22:16:04,103 INFO L124 PetriNetUnfolderBase]: 18/332 cut-off events. [2023-11-06 22:16:04,103 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:16:04,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 332 events. 18/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 847 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 185. Up to 4 conditions per place. [2023-11-06 22:16:04,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 6516 [2023-11-06 22:16:13,044 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 109 DAG size of output: 102 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:17:24,852 WARN L293 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 126 DAG size of output: 118 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:17:41,679 WARN L293 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 121 DAG size of output: 120 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:17:52,393 WARN L293 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 121 DAG size of output: 120 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:18:21,912 WARN L293 SmtUtils]: Spent 17.38s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:18:38,336 WARN L293 SmtUtils]: Spent 16.42s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:18:54,158 WARN L293 SmtUtils]: Spent 15.82s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:10,133 WARN L293 SmtUtils]: Spent 15.97s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:24,474 WARN L293 SmtUtils]: Spent 14.29s on a formula simplification. DAG size of input: 235 DAG size of output: 200 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:32,171 WARN L293 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:06,912 WARN L293 SmtUtils]: Spent 34.73s on a formula simplification. DAG size of input: 244 DAG size of output: 206 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)