./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:05:39,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:05:39,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:05:39,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:05:39,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:05:39,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:05:39,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:05:39,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:05:39,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:05:39,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:05:39,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:05:39,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:05:39,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:05:39,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:05:39,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:05:39,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:05:39,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:05:39,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:05:39,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:05:39,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:05:39,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:05:39,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:05:39,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:05:39,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:05:39,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:05:39,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:05:39,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:05:39,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:05:39,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:05:39,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:05:39,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:05:39,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:05:39,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:05:39,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:05:39,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:05:39,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:05:39,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:05:39,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:05:39,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:05:39,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:05:39,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:05:39,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 10:05:39,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:05:39,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:05:39,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:05:39,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:05:39,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:05:39,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:05:39,491 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:05:39,492 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:05:39,492 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:05:39,492 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:05:39,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:05:39,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:05:39,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:05:39,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:05:39,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:05:39,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:39,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:05:39,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:05:39,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 [2022-12-14 10:05:39,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:05:39,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:05:39,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:05:39,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:05:39,708 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:05:39,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-12-14 10:05:42,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:05:42,691 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:05:42,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-12-14 10:05:42,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/data/1ad8deac2/04ac6d16e3f1468aa80c310a43050c75/FLAG37e3966f3 [2022-12-14 10:05:42,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/data/1ad8deac2/04ac6d16e3f1468aa80c310a43050c75 [2022-12-14 10:05:42,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:05:42,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:05:42,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:42,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:05:42,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:05:42,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:42" (1/1) ... [2022-12-14 10:05:42,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a0a444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:42, skipping insertion in model container [2022-12-14 10:05:42,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:42" (1/1) ... [2022-12-14 10:05:42,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:05:43,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:05:43,251 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2022-12-14 10:05:43,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:43,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:43,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:44,352 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-14 10:05:44,356 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:44,361 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:44,368 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:44,489 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:05:44,493 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:05:44,594 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-14 10:05:44,757 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:05:44,764 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:05:44,817 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-14 10:05:44,820 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-14 10:05:45,048 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-14 10:05:45,050 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-14 10:05:45,053 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-14 10:05:45,129 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 10:05:45,130 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:05:45,132 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-14 10:05:45,132 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:05:45,282 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-14 10:05:45,315 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-14 10:05:45,490 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-14 10:05:45,494 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:05:45,633 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-14 10:05:45,786 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-14 10:05:45,786 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-14 10:05:45,787 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-14 10:05:46,660 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-14 10:05:46,661 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:46,663 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:46,666 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:46,668 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:47,196 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-14 10:05:47,200 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-14 10:05:47,206 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-14 10:05:47,216 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-14 10:05:47,217 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-14 10:05:47,221 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-14 10:05:47,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:47,250 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:05:47,261 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2022-12-14 10:05:47,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:05:47,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:05:47,298 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-14 10:05:47,298 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:47,299 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:47,299 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:05:47,303 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:05:47,304 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:05:47,307 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-14 10:05:47,318 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:05:47,319 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:05:47,320 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-14 10:05:47,321 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-14 10:05:47,328 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-14 10:05:47,328 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-14 10:05:47,328 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-14 10:05:47,331 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 10:05:47,331 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:05:47,332 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-14 10:05:47,332 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:05:47,338 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-14 10:05:47,340 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-14 10:05:47,344 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-14 10:05:47,344 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:05:47,347 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-14 10:05:47,351 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-14 10:05:47,351 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-14 10:05:47,351 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-14 10:05:47,423 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-14 10:05:47,423 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:47,425 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:47,428 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:47,429 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:05:47,460 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-14 10:05:47,461 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-14 10:05:47,462 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-14 10:05:47,463 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-14 10:05:47,463 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-14 10:05:47,464 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-14 10:05:47,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:47,862 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:05:47,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47 WrapperNode [2022-12-14 10:05:47,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:47,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:47,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:05:47,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:05:47,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:47,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:47,985 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 19, statements flattened = 492 [2022-12-14 10:05:47,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:47,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:05:47,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:05:47,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:05:47,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:47,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:47,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:47,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:05:48,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:05:48,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:05:48,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:05:48,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (1/1) ... [2022-12-14 10:05:48,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:48,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:05:48,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:05:48,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab960d83-cc9a-476c-937f-52307081e002/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:05:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:05:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:05:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-14 10:05:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-14 10:05:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:05:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:05:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-12-14 10:05:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:05:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:05:48,084 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:05:48,365 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:05:48,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:05:48,862 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:05:48,903 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:05:48,903 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:05:48,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:48 BoogieIcfgContainer [2022-12-14 10:05:48,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:05:48,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:05:48,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:05:48,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:05:48,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:05:42" (1/3) ... [2022-12-14 10:05:48,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639e832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:48, skipping insertion in model container [2022-12-14 10:05:48,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:47" (2/3) ... [2022-12-14 10:05:48,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7639e832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:48, skipping insertion in model container [2022-12-14 10:05:48,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:48" (3/3) ... [2022-12-14 10:05:48,911 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2022-12-14 10:05:48,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 10:05:48,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:05:48,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-12-14 10:05:48,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:05:49,008 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 10:05:49,041 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:05:49,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 560 places, 565 transitions, 1146 flow [2022-12-14 10:05:49,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 560 places, 565 transitions, 1146 flow [2022-12-14 10:05:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 560 places, 565 transitions, 1146 flow [2022-12-14 10:05:49,198 INFO L130 PetriNetUnfolder]: 12/563 cut-off events. [2022-12-14 10:05:49,199 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 10:05:49,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 563 events. 12/563 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 634 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 474. Up to 4 conditions per place. [2022-12-14 10:05:49,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 27696 [2022-12-14 10:11:55,728 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 406 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:12:04,124 WARN L233 SmtUtils]: Spent 8.39s on a formula simplification that was a NOOP. DAG size: 366 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:12:10,949 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 406 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:12:16,819 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification that was a NOOP. DAG size: 366 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:15:22,758 WARN L233 SmtUtils]: Spent 2.97m on a formula simplification. DAG size of input: 563 DAG size of output: 559 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:16:46,082 WARN L233 SmtUtils]: Spent 1.39m on a formula simplification that was a NOOP. DAG size: 517 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:20:26,740 WARN L233 SmtUtils]: Spent 3.68m on a formula simplification. DAG size of input: 574 DAG size of output: 570 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)