./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur --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 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 --- 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-38b53e6 [2022-11-25 22:20:56,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:20:56,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:20:56,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:20:56,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:20:56,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:20:56,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:20:56,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:20:56,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:20:56,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:20:56,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:20:56,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:20:56,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:20:56,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:20:56,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:20:56,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:20:56,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:20:56,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:20:56,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:20:56,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:20:56,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:20:56,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:20:56,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:20:56,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:20:57,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:20:57,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:20:57,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:20:57,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:20:57,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:20:57,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:20:57,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:20:57,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:20:57,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:20:57,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:20:57,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:20:57,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:20:57,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:20:57,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:20:57,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:20:57,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:20:57,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:20:57,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-25 22:20:57,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:20:57,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:20:57,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:20:57,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:20:57,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:20:57,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:20:57,077 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:20:57,077 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:20:57,078 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:20:57,078 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:20:57,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:20:57,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:20:57,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:20:57,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:20:57,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:20:57,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:20:57,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:20:57,080 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:20:57,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:20:57,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:20:57,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:20:57,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:20:57,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:20:57,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:20:57,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:20:57,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:20:57,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:20:57,083 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 22:20:57,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:20:57,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:20:57,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:20:57,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:20:57,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:20:57,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:20:57,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:20:57,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:20:57,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:20:57,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:20:57,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:20:57,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:20:57,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:20:57,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:20:57,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:20:57,091 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_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 [2022-11-25 22:20:57,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:20:57,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:20:57,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:20:57,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:20:57,406 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:20:57,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2022-11-25 22:21:00,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:21:01,177 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:21:01,178 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2022-11-25 22:21:01,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/data/ceddaaae4/0471b6271e4b4164bd789d5ddb4161c7/FLAGe575e3cb3 [2022-11-25 22:21:01,255 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/data/ceddaaae4/0471b6271e4b4164bd789d5ddb4161c7 [2022-11-25 22:21:01,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:21:01,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:21:01,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:21:01,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:21:01,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:21:01,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:21:01" (1/1) ... [2022-11-25 22:21:01,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506e8f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:01, skipping insertion in model container [2022-11-25 22:21:01,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:21:01" (1/1) ... [2022-11-25 22:21:01,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:21:01,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:21:01,859 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_d494fd2e-d7d4-4353-a287-0d529d2f8260/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2022-11-25 22:21:02,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:02,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:02,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:03,358 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 22:21:03,364 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:03,370 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:03,381 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:03,559 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 22:21:03,567 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 22:21:03,774 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 22:21:04,072 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 22:21:04,081 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 22:21:04,169 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 22:21:04,175 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 22:21:04,568 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 22:21:04,572 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 22:21:04,577 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 22:21:04,749 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 22:21:04,749 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 22:21:04,754 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 22:21:04,755 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 22:21:05,013 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 22:21:05,066 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 22:21:05,302 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 22:21:05,307 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:21:05,529 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 22:21:05,770 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 22:21:05,771 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 22:21:05,771 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 22:21:07,200 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 22:21:07,201 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:07,206 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:07,211 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:07,215 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:07,981 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 22:21:07,988 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 22:21:07,997 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 22:21:08,012 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 22:21:08,013 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 22:21:08,017 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 22:21:08,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:21:08,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:21:08,103 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_d494fd2e-d7d4-4353-a287-0d529d2f8260/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2022-11-25 22:21:08,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:21:08,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:21:08,168 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 22:21:08,169 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:08,169 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:08,170 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 22:21:08,184 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 22:21:08,186 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 22:21:08,193 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 22:21:08,312 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 22:21:08,315 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 22:21:08,318 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 22:21:08,319 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 22:21:08,332 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 22:21:08,332 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 22:21:08,333 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 22:21:08,339 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 22:21:08,339 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 22:21:08,340 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 22:21:08,340 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 22:21:08,353 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 22:21:08,356 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 22:21:08,363 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 22:21:08,365 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:21:08,372 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 22:21:08,379 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 22:21:08,379 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 22:21:08,380 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 22:21:08,523 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 22:21:08,525 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:08,529 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:08,541 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:08,546 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 22:21:08,599 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 22:21:08,602 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 22:21:08,603 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 22:21:08,605 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 22:21:08,606 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 22:21:08,606 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 22:21:08,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:21:09,193 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:21:09,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09 WrapperNode [2022-11-25 22:21:09,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:21:09,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:21:09,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:21:09,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:21:09,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,456 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 18, statements flattened = 554 [2022-11-25 22:21:09,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:21:09,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:21:09,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:21:09,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:21:09,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:21:09,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:21:09,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:21:09,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:21:09,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (1/1) ... [2022-11-25 22:21:09,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:21:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:09,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:21:09,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d494fd2e-d7d4-4353-a287-0d529d2f8260/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:21:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:21:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:21:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:21:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:21:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:21:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 22:21:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:21:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:21:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-11-25 22:21:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-11-25 22:21:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:21:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:21:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2022-11-25 22:21:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2022-11-25 22:21:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:21:09,702 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 22:21:10,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:21:10,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:21:11,184 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:21:11,208 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:21:11,209 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 22:21:11,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:21:11 BoogieIcfgContainer [2022-11-25 22:21:11,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:21:11,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:21:11,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:21:11,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:21:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:21:01" (1/3) ... [2022-11-25 22:21:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e49c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:21:11, skipping insertion in model container [2022-11-25 22:21:11,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:09" (2/3) ... [2022-11-25 22:21:11,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e49c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:21:11, skipping insertion in model container [2022-11-25 22:21:11,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:21:11" (3/3) ... [2022-11-25 22:21:11,226 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2022-11-25 22:21:11,236 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 22:21:11,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:21:11,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-11-25 22:21:11,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 22:21:11,455 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 22:21:11,508 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 22:21:11,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 653 places, 663 transitions, 1342 flow [2022-11-25 22:21:11,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 653 places, 663 transitions, 1342 flow [2022-11-25 22:21:11,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 653 places, 663 transitions, 1342 flow [2022-11-25 22:21:11,931 INFO L130 PetriNetUnfolder]: 17/661 cut-off events. [2022-11-25 22:21:11,931 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 22:21:11,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 661 events. 17/661 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1106 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 472. Up to 4 conditions per place. [2022-11-25 22:21:11,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 63184 [2022-11-25 22:25:24,833 WARN L233 SmtUtils]: Spent 2.17m on a formula simplification. DAG size of input: 559 DAG size of output: 555 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:26:19,241 WARN L233 SmtUtils]: Spent 54.38s on a formula simplification that was a NOOP. DAG size: 483 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:28:15,061 WARN L233 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 562 DAG size of output: 558 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:28:51,311 WARN L233 SmtUtils]: Spent 36.22s on a formula simplification that was a NOOP. DAG size: 486 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:30:47,247 WARN L233 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 562 DAG size of output: 558 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:31:37,856 WARN L233 SmtUtils]: Spent 50.59s on a formula simplification that was a NOOP. DAG size: 484 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:34:39,945 WARN L233 SmtUtils]: Spent 3.03m on a formula simplification. DAG size of input: 565 DAG size of output: 561 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 22:35:50,390 WARN L233 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 487 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)