./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/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 1941de74eb261e3f3ecbbb76e1746df74b536a1b8190d4ca9fd6a4341892fdcb --- 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 10:19:34,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:19:34,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:19:34,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:19:34,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:19:34,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:19:34,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:19:34,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:19:34,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:19:34,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:19:34,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:19:34,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:19:34,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:19:34,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:19:34,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:19:34,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:19:34,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:19:34,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:19:34,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:19:34,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:19:34,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:19:34,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:19:34,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:19:34,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:19:34,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:19:34,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:19:34,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:19:34,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:19:34,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:19:34,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:19:34,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:19:34,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:19:34,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:19:34,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:19:34,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:19:34,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:19:34,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:19:34,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:19:34,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:19:34,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:19:34,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:19:34,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 10:19:34,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:19:34,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:19:34,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:19:34,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:19:34,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:19:34,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:19:34,517 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:19:34,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:19:34,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:19:34,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:19:34,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:19:34,518 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:19:34,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:19:34,519 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:19:34,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:19:34,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:19:34,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:19:34,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:19:34,521 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:19:34,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:19:34,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:19:34,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:19:34,521 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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1941de74eb261e3f3ecbbb76e1746df74b536a1b8190d4ca9fd6a4341892fdcb [2022-12-14 10:19:34,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:19:34,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:19:34,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:19:34,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:19:34,773 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:19:34,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i [2022-12-14 10:19:37,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:19:37,676 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:19:37,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i [2022-12-14 10:19:37,699 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/data/ccb34e217/9347a5852c0f4d4682c3387f672cddb4/FLAG95ca3ca3a [2022-12-14 10:19:37,711 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/data/ccb34e217/9347a5852c0f4d4682c3387f672cddb4 [2022-12-14 10:19:37,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:19:37,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:19:37,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:19:37,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:19:37,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:19:37,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:19:37" (1/1) ... [2022-12-14 10:19:37,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d989c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:37, skipping insertion in model container [2022-12-14 10:19:37,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:19:37" (1/1) ... [2022-12-14 10:19:37,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:19:37,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:19:38,066 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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i[5469,5482] [2022-12-14 10:19:38,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:38,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:38,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:39,003 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-14 10:19:39,008 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:39,012 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:39,018 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:39,115 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:19:39,119 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:19:39,220 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-14 10:19:39,391 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:19:39,399 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:19:39,450 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-14 10:19:39,454 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-14 10:19:39,680 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-14 10:19:39,682 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-14 10:19:39,685 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-14 10:19:39,762 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 10:19:39,762 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:19:39,764 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-14 10:19:39,764 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:19:39,896 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-14 10:19:39,924 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-14 10:19:40,067 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-14 10:19:40,071 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:19:40,215 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-14 10:19:40,380 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-14 10:19:40,380 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-14 10:19:40,380 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-14 10:19:41,240 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-14 10:19:41,241 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:41,247 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:41,252 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:41,257 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:41,790 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-14 10:19:41,796 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-14 10:19:41,801 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-14 10:19:41,809 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-14 10:19:41,810 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-14 10:19:41,813 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-14 10:19:41,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:19:41,850 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:19:41,862 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_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i[5469,5482] [2022-12-14 10:19:41,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:19:41,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:19:41,901 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-14 10:19:41,901 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:41,902 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:41,902 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-14 10:19:41,907 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:19:41,909 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-14 10:19:41,914 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-14 10:19:41,929 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:19:41,930 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-14 10:19:41,932 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-14 10:19:41,932 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-14 10:19:41,956 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-14 10:19:41,956 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-14 10:19:41,957 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-14 10:19:41,961 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 10:19:41,961 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:19:41,961 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-14 10:19:41,962 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-14 10:19:41,971 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-14 10:19:41,973 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-14 10:19:41,979 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-14 10:19:41,980 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-14 10:19:41,984 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-14 10:19:41,989 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-14 10:19:41,989 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-14 10:19:41,989 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-14 10:19:42,108 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-14 10:19:42,108 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:42,111 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:42,114 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:42,116 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-14 10:19:42,156 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-14 10:19:42,173 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-14 10:19:42,174 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-14 10:19:42,176 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-14 10:19:42,177 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-14 10:19:42,177 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-14 10:19:42,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:19:42,549 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:19:42,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42 WrapperNode [2022-12-14 10:19:42,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:19:42,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:19:42,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:19:42,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:19:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,693 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 19, statements flattened = 492 [2022-12-14 10:19:42,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:19:42,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:19:42,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:19:42,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:19:42,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:19:42,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:19:42,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:19:42,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:19:42,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (1/1) ... [2022-12-14 10:19:42,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:19:42,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:42,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:19:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea6970a-dadc-4a7d-a2a6-7e9539dbfdb3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:19:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:19:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:19:42,812 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-14 10:19:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:19:42,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 10:19:42,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 10:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2022-12-14 10:19:42,821 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2022-12-14 10:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:19:42,823 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 10:19:43,135 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:19:43,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:19:43,636 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:19:43,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:19:43,699 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:19:43,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:19:43 BoogieIcfgContainer [2022-12-14 10:19:43,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:19:43,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:19:43,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:19:43,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:19:43,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:19:37" (1/3) ... [2022-12-14 10:19:43,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd264ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:19:43, skipping insertion in model container [2022-12-14 10:19:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:19:42" (2/3) ... [2022-12-14 10:19:43,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd264ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:19:43, skipping insertion in model container [2022-12-14 10:19:43,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:19:43" (3/3) ... [2022-12-14 10:19:43,710 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_unlocked_ioctl_write_nvram.i [2022-12-14 10:19:43,718 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 10:19:43,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:19:43,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-12-14 10:19:43,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:19:43,844 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 10:19:43,882 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:19:43,895 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 558 places, 563 transitions, 1142 flow [2022-12-14 10:19:43,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 558 places, 563 transitions, 1142 flow [2022-12-14 10:19:43,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 563 transitions, 1142 flow [2022-12-14 10:19:44,106 INFO L130 PetriNetUnfolder]: 12/561 cut-off events. [2022-12-14 10:19:44,106 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 10:19:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 561 events. 12/561 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 618 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 472. Up to 4 conditions per place. [2022-12-14 10:19:44,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 27384 [2022-12-14 10:28:14,326 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:28:21,825 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 300 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:28:32,609 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 319 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:28:41,154 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 311 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:31:35,002 WARN L233 SmtUtils]: Spent 2.89m on a formula simplification. DAG size of input: 590 DAG size of output: 586 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 10:32:39,980 WARN L233 SmtUtils]: Spent 1.08m on a formula simplification that was a NOOP. DAG size: 513 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)