./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 423d8d6205a6cc6142dcdd2c64b72565885efc66c9127b3f2569a3e2890b0e68 --- 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 17:36:47,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:36:47,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:36:47,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:36:47,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:36:47,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:36:47,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:36:47,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:36:47,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:36:47,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:36:47,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:36:47,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:36:47,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:36:47,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:36:47,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:36:47,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:36:47,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:36:47,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:36:47,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:36:47,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:36:47,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:36:47,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:36:47,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:36:47,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:36:47,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:36:47,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:36:47,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:36:47,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:36:47,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:36:47,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:36:47,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:36:47,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:36:47,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:36:47,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:36:47,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:36:47,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:36:47,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:36:47,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:36:47,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:36:47,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:36:47,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:36:47,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:36:47,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:36:47,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:36:47,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:36:47,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:36:47,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:36:47,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:36:47,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:36:47,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:36:47,538 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:36:47,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:36:47,538 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:36:47,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:36:47,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:36:47,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:36:47,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:36:47,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:36:47,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:36:47,540 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:36:47,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:36:47,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:36:47,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:36:47,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:36:47,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:36:47,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:36:47,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:36:47,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:36:47,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:36:47,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:36:47,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:36:47,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:36:47,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:36:47,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:36:47,544 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:36:47,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:36:47,545 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 423d8d6205a6cc6142dcdd2c64b72565885efc66c9127b3f2569a3e2890b0e68 [2022-11-25 17:36:47,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:36:47,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:36:47,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:36:47,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:36:47,844 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:36:47,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i [2022-11-25 17:36:50,881 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:36:51,524 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:36:51,524 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i [2022-11-25 17:36:51,580 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/data/5e073e45c/c71b80cff5374892b5bc27da9d895547/FLAGd10cfb3aa [2022-11-25 17:36:51,601 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/data/5e073e45c/c71b80cff5374892b5bc27da9d895547 [2022-11-25 17:36:51,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:36:51,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:36:51,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:36:51,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:36:51,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:36:51,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:51" (1/1) ... [2022-11-25 17:36:51,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d016db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:51, skipping insertion in model container [2022-11-25 17:36:51,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:51" (1/1) ... [2022-11-25 17:36:51,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:36:51,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:36:52,183 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_368f045c-349e-4c77-8e01-0f91301f6c2a/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i[5469,5482] [2022-11-25 17:36:52,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:52,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:52,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:53,158 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 17:36:53,162 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:53,166 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:53,174 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:53,276 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:36:53,280 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:36:53,398 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 17:36:53,609 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:36:53,616 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:36:53,697 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 17:36:53,701 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 17:36:53,990 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 17:36:53,994 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 17:36:53,998 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 17:36:54,118 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 17:36:54,119 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:36:54,123 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 17:36:54,123 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:36:54,312 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 17:36:54,347 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 17:36:54,517 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 17:36:54,520 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 17:36:54,705 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 17:36:54,952 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 17:36:54,953 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 17:36:54,953 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 17:36:56,135 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 17:36:56,136 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:56,150 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:56,158 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:56,170 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:56,969 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 17:36:56,975 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 17:36:56,984 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 17:36:56,994 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 17:36:56,995 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 17:36:56,999 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 17:36:57,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:36:57,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:36:57,090 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_368f045c-349e-4c77-8e01-0f91301f6c2a/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i[5469,5482] [2022-11-25 17:36:57,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:36:57,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:36:57,150 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 17:36:57,151 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:57,151 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:57,153 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:36:57,163 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:36:57,165 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:36:57,169 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 17:36:57,188 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:36:57,189 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:36:57,192 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 17:36:57,193 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 17:36:57,206 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 17:36:57,207 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 17:36:57,207 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 17:36:57,213 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 17:36:57,214 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:36:57,215 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 17:36:57,215 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:36:57,310 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 17:36:57,313 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 17:36:57,320 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 17:36:57,321 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 17:36:57,326 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 17:36:57,331 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 17:36:57,332 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 17:36:57,332 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 17:36:57,640 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 17:36:57,641 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:57,645 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:57,652 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:57,657 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:36:57,714 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 17:36:57,716 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 17:36:57,718 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 17:36:57,722 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 17:36:57,722 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 17:36:57,723 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 17:36:57,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:36:58,221 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:36:58,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58 WrapperNode [2022-11-25 17:36:58,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:36:58,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:36:58,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:36:58,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:36:58,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,422 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 15, statements flattened = 314 [2022-11-25 17:36:58,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:36:58,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:36:58,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:36:58,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:36:58,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:36:58,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:36:58,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:36:58,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:36:58,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (1/1) ... [2022-11-25 17:36:58,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:36:58,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:36:58,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:36:58,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:36:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:36:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:36:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:36:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:36:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 17:36:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:36:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:36:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-11-25 17:36:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-11-25 17:36:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:36:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:36:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:36:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_llseek [2022-11-25 17:36:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_llseek [2022-11-25 17:36:58,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:36:59,153 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:36:59,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:36:59,606 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:36:59,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:36:59,616 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:36:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:59 BoogieIcfgContainer [2022-11-25 17:36:59,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:36:59,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:36:59,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:36:59,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:36:59,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:36:51" (1/3) ... [2022-11-25 17:36:59,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a2590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:59, skipping insertion in model container [2022-11-25 17:36:59,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:58" (2/3) ... [2022-11-25 17:36:59,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a2590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:59, skipping insertion in model container [2022-11-25 17:36:59,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:59" (3/3) ... [2022-11-25 17:36:59,627 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_llseek_read_nvram.i [2022-11-25 17:36:59,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:36:59,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:36:59,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:36:59,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:36:59,762 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:36:59,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 369 transitions, 754 flow [2022-11-25 17:36:59,994 INFO L130 PetriNetUnfolder]: 15/367 cut-off events. [2022-11-25 17:36:59,994 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:37:00,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 367 events. 15/367 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 365 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 300. Up to 5 conditions per place. [2022-11-25 17:37:00,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 369 transitions, 754 flow [2022-11-25 17:37:00,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 358 transitions, 725 flow [2022-11-25 17:37:00,029 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:37:00,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 358 transitions, 725 flow [2022-11-25 17:37:00,054 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 358 transitions, 725 flow [2022-11-25 17:37:00,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 358 transitions, 725 flow [2022-11-25 17:37:00,175 INFO L130 PetriNetUnfolder]: 15/358 cut-off events. [2022-11-25 17:37:00,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:37:00,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 358 events. 15/358 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 341 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 300. Up to 5 conditions per place. [2022-11-25 17:37:00,185 INFO L119 LiptonReduction]: Number of co-enabled transitions 12788 [2022-11-25 17:38:07,179 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 255 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:24,990 WARN L233 SmtUtils]: Spent 14.15s on a formula simplification that was a NOOP. DAG size: 468 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:37,326 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification that was a NOOP. DAG size: 436 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:59,734 WARN L233 SmtUtils]: Spent 22.40s on a formula simplification that was a NOOP. DAG size: 471 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:39:20,212 WARN L233 SmtUtils]: Spent 20.47s on a formula simplification that was a NOOP. DAG size: 439 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:41:23,121 WARN L233 SmtUtils]: Spent 2.05m on a formula simplification. DAG size of input: 522 DAG size of output: 515 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:42:37,089 WARN L233 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 501 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:45:24,564 WARN L233 SmtUtils]: Spent 2.79m on a formula simplification. DAG size of input: 535 DAG size of output: 528 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:46:15,897 WARN L233 SmtUtils]: Spent 51.33s on a formula simplification that was a NOOP. DAG size: 514 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:46:15,901 INFO L134 LiptonReduction]: Checked pairs total: 14014 [2022-11-25 17:46:15,901 INFO L136 LiptonReduction]: Total number of compositions: 407 [2022-11-25 17:46:15,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:46:15,924 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f697ecd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:46:15,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 17:46:15,937 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-11-25 17:46:15,938 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:46:15,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:15,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:46:15,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2031319858, now seen corresponding path program 1 times [2022-11-25 17:46:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:15,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092657254] [2022-11-25 17:46:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092657254] [2022-11-25 17:46:17,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092657254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:17,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:17,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:46:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814954336] [2022-11-25 17:46:17,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:46:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:46:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:46:17,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 776 [2022-11-25 17:46:17,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:17,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 776 [2022-11-25 17:46:17,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:17,688 INFO L130 PetriNetUnfolder]: 197/332 cut-off events. [2022-11-25 17:46:17,688 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-25 17:46:17,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 332 events. 197/332 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1125 event pairs, 89 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 580. Up to 236 conditions per place. [2022-11-25 17:46:17,692 INFO L137 encePairwiseOnDemand]: 771/776 looper letters, 26 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2022-11-25 17:46:17,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 147 flow [2022-11-25 17:46:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:46:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:46:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2022-11-25 17:46:17,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45919243986254293 [2022-11-25 17:46:17,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2022-11-25 17:46:17,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2022-11-25 17:46:17,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:17,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2022-11-25 17:46:17,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 776.0) internal successors, (3104), 4 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 776.0) internal successors, (3104), 4 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,744 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 51 flow. Second operand 3 states and 1069 transitions. [2022-11-25 17:46:17,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 147 flow [2022-11-25 17:46:17,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:46:17,750 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 76 flow [2022-11-25 17:46:17,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2022-11-25 17:46:17,755 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-11-25 17:46:17,755 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 76 flow [2022-11-25 17:46:17,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:17,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:46:17,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1369909089, now seen corresponding path program 1 times [2022-11-25 17:46:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:17,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782065133] [2022-11-25 17:46:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:18,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782065133] [2022-11-25 17:46:18,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782065133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:18,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:18,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:46:18,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627749710] [2022-11-25 17:46:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:46:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:46:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:46:18,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 776 [2022-11-25 17:46:18,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:18,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:18,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 776 [2022-11-25 17:46:18,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:18,945 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2022-11-25 17:46:18,945 INFO L131 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-11-25 17:46:18,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 343 events. 192/343 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1235 event pairs, 85 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 480. Up to 199 conditions per place. [2022-11-25 17:46:18,947 INFO L137 encePairwiseOnDemand]: 772/776 looper letters, 24 selfloop transitions, 3 changer transitions 11/38 dead transitions. [2022-11-25 17:46:18,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 38 transitions, 193 flow [2022-11-25 17:46:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:46:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:46:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2022-11-25 17:46:18,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-11-25 17:46:18,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2022-11-25 17:46:18,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2022-11-25 17:46:18,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:18,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2022-11-25 17:46:18,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:18,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 776.0) internal successors, (3104), 4 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:18,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 776.0) internal successors, (3104), 4 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:18,969 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 76 flow. Second operand 3 states and 1067 transitions. [2022-11-25 17:46:18,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 38 transitions, 193 flow [2022-11-25 17:46:18,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:46:18,973 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 82 flow [2022-11-25 17:46:18,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2022-11-25 17:46:18,975 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-11-25 17:46:18,976 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 82 flow [2022-11-25 17:46:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:18,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:18,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:18,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:46:18,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1453593881, now seen corresponding path program 1 times [2022-11-25 17:46:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:18,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341691233] [2022-11-25 17:46:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341691233] [2022-11-25 17:46:19,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341691233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:19,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:19,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112567579] [2022-11-25 17:46:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:46:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:46:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:46:20,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 776 [2022-11-25 17:46:20,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 341.1666666666667) internal successors, (2047), 6 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:20,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:20,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 776 [2022-11-25 17:46:20,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:20,769 INFO L130 PetriNetUnfolder]: 126/253 cut-off events. [2022-11-25 17:46:20,769 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-25 17:46:20,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 253 events. 126/253 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 978 event pairs, 21 based on Foata normal form. 7/242 useless extension candidates. Maximal degree in co-relation 502. Up to 127 conditions per place. [2022-11-25 17:46:20,771 INFO L137 encePairwiseOnDemand]: 771/776 looper letters, 24 selfloop transitions, 6 changer transitions 8/38 dead transitions. [2022-11-25 17:46:20,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 211 flow [2022-11-25 17:46:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:46:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1737 transitions. [2022-11-25 17:46:20,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44768041237113404 [2022-11-25 17:46:20,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1737 transitions. [2022-11-25 17:46:20,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1737 transitions. [2022-11-25 17:46:20,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:20,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1737 transitions. [2022-11-25 17:46:20,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 347.4) internal successors, (1737), 5 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:20,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 776.0) internal successors, (4656), 6 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:20,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 776.0) internal successors, (4656), 6 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:20,794 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 82 flow. Second operand 5 states and 1737 transitions. [2022-11-25 17:46:20,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 211 flow [2022-11-25 17:46:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:46:20,797 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 100 flow [2022-11-25 17:46:20,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 17:46:20,798 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2022-11-25 17:46:20,798 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 100 flow [2022-11-25 17:46:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 341.1666666666667) internal successors, (2047), 6 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:20,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:20,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:46:20,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 427223561, now seen corresponding path program 1 times [2022-11-25 17:46:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954464773] [2022-11-25 17:46:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:31,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954464773] [2022-11-25 17:46:31,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954464773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:31,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:31,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118505644] [2022-11-25 17:46:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:31,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:32,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 776 [2022-11-25 17:46:32,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 340.42857142857144) internal successors, (2383), 7 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:32,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:32,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 776 [2022-11-25 17:46:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:32,719 INFO L130 PetriNetUnfolder]: 157/336 cut-off events. [2022-11-25 17:46:32,719 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-25 17:46:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 336 events. 157/336 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1482 event pairs, 24 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 414. Up to 111 conditions per place. [2022-11-25 17:46:32,723 INFO L137 encePairwiseOnDemand]: 769/776 looper letters, 31 selfloop transitions, 10 changer transitions 14/55 dead transitions. [2022-11-25 17:46:32,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 328 flow [2022-11-25 17:46:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:46:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:46:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2765 transitions. [2022-11-25 17:46:32,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44539304123711343 [2022-11-25 17:46:32,732 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2765 transitions. [2022-11-25 17:46:32,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2765 transitions. [2022-11-25 17:46:32,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:32,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2765 transitions. [2022-11-25 17:46:32,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 345.625) internal successors, (2765), 8 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:32,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 776.0) internal successors, (6984), 9 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:32,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 776.0) internal successors, (6984), 9 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:32,759 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 100 flow. Second operand 8 states and 2765 transitions. [2022-11-25 17:46:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 328 flow [2022-11-25 17:46:32,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 55 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:46:32,765 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 142 flow [2022-11-25 17:46:32,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=142, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2022-11-25 17:46:32,767 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2022-11-25 17:46:32,767 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 142 flow [2022-11-25 17:46:32,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 340.42857142857144) internal successors, (2383), 7 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:32,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:32,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:32,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:46:32,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1101587617, now seen corresponding path program 1 times [2022-11-25 17:46:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:32,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749962750] [2022-11-25 17:46:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749962750] [2022-11-25 17:46:33,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749962750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:33,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:33,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:33,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137241581] [2022-11-25 17:46:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:33,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:33,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:34,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 776 [2022-11-25 17:46:34,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 340.42857142857144) internal successors, (2383), 7 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:34,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 776 [2022-11-25 17:46:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:34,948 INFO L130 PetriNetUnfolder]: 137/286 cut-off events. [2022-11-25 17:46:34,949 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2022-11-25 17:46:34,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 286 events. 137/286 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1172 event pairs, 15 based on Foata normal form. 6/292 useless extension candidates. Maximal degree in co-relation 700. Up to 109 conditions per place. [2022-11-25 17:46:34,951 INFO L137 encePairwiseOnDemand]: 770/776 looper letters, 28 selfloop transitions, 11 changer transitions 15/54 dead transitions. [2022-11-25 17:46:34,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 338 flow [2022-11-25 17:46:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:46:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:46:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2762 transitions. [2022-11-25 17:46:34,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44490979381443296 [2022-11-25 17:46:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2762 transitions. [2022-11-25 17:46:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2762 transitions. [2022-11-25 17:46:34,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:34,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2762 transitions. [2022-11-25 17:46:34,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 776.0) internal successors, (6984), 9 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 776.0) internal successors, (6984), 9 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,985 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 142 flow. Second operand 8 states and 2762 transitions. [2022-11-25 17:46:34,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 338 flow [2022-11-25 17:46:34,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 332 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:46:34,989 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 177 flow [2022-11-25 17:46:34,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2022-11-25 17:46:34,992 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2022-11-25 17:46:34,992 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 177 flow [2022-11-25 17:46:34,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 340.42857142857144) internal successors, (2383), 7 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:34,994 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:46:34,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 656796851, now seen corresponding path program 2 times [2022-11-25 17:46:34,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:34,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202095152] [2022-11-25 17:46:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202095152] [2022-11-25 17:46:35,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202095152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:35,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:35,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347738413] [2022-11-25 17:46:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:36,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 776 [2022-11-25 17:46:36,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:36,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:36,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 776 [2022-11-25 17:46:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:37,280 INFO L130 PetriNetUnfolder]: 119/262 cut-off events. [2022-11-25 17:46:37,280 INFO L131 PetriNetUnfolder]: For 566/566 co-relation queries the response was YES. [2022-11-25 17:46:37,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 262 events. 119/262 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1108 event pairs, 18 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 690. Up to 139 conditions per place. [2022-11-25 17:46:37,282 INFO L137 encePairwiseOnDemand]: 769/776 looper letters, 22 selfloop transitions, 9 changer transitions 14/45 dead transitions. [2022-11-25 17:46:37,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 327 flow [2022-11-25 17:46:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2081 transitions. [2022-11-25 17:46:37,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44695017182130586 [2022-11-25 17:46:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2081 transitions. [2022-11-25 17:46:37,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2081 transitions. [2022-11-25 17:46:37,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:37,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2081 transitions. [2022-11-25 17:46:37,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 346.8333333333333) internal successors, (2081), 6 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:37,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:37,311 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:37,311 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 177 flow. Second operand 6 states and 2081 transitions. [2022-11-25 17:46:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 327 flow [2022-11-25 17:46:37,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 316 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 17:46:37,315 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 180 flow [2022-11-25 17:46:37,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2022-11-25 17:46:37,316 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2022-11-25 17:46:37,317 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 180 flow [2022-11-25 17:46:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:37,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:37,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:37,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:46:37,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:37,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 663168281, now seen corresponding path program 3 times [2022-11-25 17:46:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:37,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085019848] [2022-11-25 17:46:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:38,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085019848] [2022-11-25 17:46:38,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085019848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:38,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:38,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629198521] [2022-11-25 17:46:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:38,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:38,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 776 [2022-11-25 17:46:38,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:38,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:38,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 776 [2022-11-25 17:46:38,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:39,718 INFO L130 PetriNetUnfolder]: 107/244 cut-off events. [2022-11-25 17:46:39,718 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-11-25 17:46:39,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 244 events. 107/244 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1024 event pairs, 18 based on Foata normal form. 6/250 useless extension candidates. Maximal degree in co-relation 747. Up to 70 conditions per place. [2022-11-25 17:46:39,720 INFO L137 encePairwiseOnDemand]: 770/776 looper letters, 21 selfloop transitions, 8 changer transitions 21/50 dead transitions. [2022-11-25 17:46:39,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 343 flow [2022-11-25 17:46:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:46:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:46:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2428 transitions. [2022-11-25 17:46:39,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44698085419734906 [2022-11-25 17:46:39,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2428 transitions. [2022-11-25 17:46:39,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2428 transitions. [2022-11-25 17:46:39,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:39,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2428 transitions. [2022-11-25 17:46:39,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 346.85714285714283) internal successors, (2428), 7 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:39,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 776.0) internal successors, (6208), 8 states have internal predecessors, (6208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:39,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 776.0) internal successors, (6208), 8 states have internal predecessors, (6208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:39,767 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 180 flow. Second operand 7 states and 2428 transitions. [2022-11-25 17:46:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 343 flow [2022-11-25 17:46:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 323 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 17:46:39,771 INFO L231 Difference]: Finished difference. Result has 47 places, 25 transitions, 154 flow [2022-11-25 17:46:39,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2022-11-25 17:46:39,772 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2022-11-25 17:46:39,773 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 154 flow [2022-11-25 17:46:39,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 341.42857142857144) internal successors, (2390), 7 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:39,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:39,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:39,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:46:39,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 186174957, now seen corresponding path program 2 times [2022-11-25 17:46:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:39,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508663967] [2022-11-25 17:46:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508663967] [2022-11-25 17:46:40,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508663967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:40,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:40,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397110698] [2022-11-25 17:46:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:41,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 776 [2022-11-25 17:46:41,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 339.42857142857144) internal successors, (2376), 7 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:41,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:41,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 776 [2022-11-25 17:46:41,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:42,092 INFO L130 PetriNetUnfolder]: 119/262 cut-off events. [2022-11-25 17:46:42,092 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-11-25 17:46:42,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 262 events. 119/262 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1061 event pairs, 18 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 783. Up to 82 conditions per place. [2022-11-25 17:46:42,094 INFO L137 encePairwiseOnDemand]: 770/776 looper letters, 23 selfloop transitions, 6 changer transitions 17/46 dead transitions. [2022-11-25 17:46:42,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 309 flow [2022-11-25 17:46:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2071 transitions. [2022-11-25 17:46:42,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44480240549828176 [2022-11-25 17:46:42,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2071 transitions. [2022-11-25 17:46:42,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2071 transitions. [2022-11-25 17:46:42,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:42,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2071 transitions. [2022-11-25 17:46:42,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 345.1666666666667) internal successors, (2071), 6 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:42,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:42,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:42,117 INFO L175 Difference]: Start difference. First operand has 47 places, 25 transitions, 154 flow. Second operand 6 states and 2071 transitions. [2022-11-25 17:46:42,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 309 flow [2022-11-25 17:46:42,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 292 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 17:46:42,120 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 139 flow [2022-11-25 17:46:42,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2022-11-25 17:46:42,123 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2022-11-25 17:46:42,126 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 139 flow [2022-11-25 17:46:42,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 339.42857142857144) internal successors, (2376), 7 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:42,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:42,127 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:42,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:46:42,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2145836131, now seen corresponding path program 4 times [2022-11-25 17:46:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:42,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079498683] [2022-11-25 17:46:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:43,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079498683] [2022-11-25 17:46:43,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079498683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:43,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:43,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:46:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143502967] [2022-11-25 17:46:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:46:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:46:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:46:43,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 776 [2022-11-25 17:46:43,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:43,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:43,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 776 [2022-11-25 17:46:43,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:44,536 INFO L130 PetriNetUnfolder]: 77/178 cut-off events. [2022-11-25 17:46:44,536 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2022-11-25 17:46:44,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 178 events. 77/178 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 636 event pairs, 13 based on Foata normal form. 6/184 useless extension candidates. Maximal degree in co-relation 545. Up to 66 conditions per place. [2022-11-25 17:46:44,538 INFO L137 encePairwiseOnDemand]: 771/776 looper letters, 14 selfloop transitions, 3 changer transitions 17/34 dead transitions. [2022-11-25 17:46:44,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 244 flow [2022-11-25 17:46:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2055 transitions. [2022-11-25 17:46:44,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4413659793814433 [2022-11-25 17:46:44,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2055 transitions. [2022-11-25 17:46:44,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2055 transitions. [2022-11-25 17:46:44,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:44,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2055 transitions. [2022-11-25 17:46:44,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.5) internal successors, (2055), 6 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,559 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 139 flow. Second operand 6 states and 2055 transitions. [2022-11-25 17:46:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 244 flow [2022-11-25 17:46:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 225 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 17:46:44,562 INFO L231 Difference]: Finished difference. Result has 43 places, 15 transitions, 75 flow [2022-11-25 17:46:44,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=43, PETRI_TRANSITIONS=15} [2022-11-25 17:46:44,564 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2022-11-25 17:46:44,564 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 15 transitions, 75 flow [2022-11-25 17:46:44,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:44,566 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:46:44,566 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 17:46:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 427193757, now seen corresponding path program 3 times [2022-11-25 17:46:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:44,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458634373] [2022-11-25 17:46:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:45,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458634373] [2022-11-25 17:46:45,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458634373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:45,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:45,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995306811] [2022-11-25 17:46:45,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:45,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:46:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:46:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:45,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 776 [2022-11-25 17:46:45,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 15 transitions, 75 flow. Second operand has 7 states, 7 states have (on average 339.42857142857144) internal successors, (2376), 7 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:45,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:45,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 776 [2022-11-25 17:46:45,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:46,558 INFO L130 PetriNetUnfolder]: 13/34 cut-off events. [2022-11-25 17:46:46,558 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 17:46:46,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 34 events. 13/34 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 6/40 useless extension candidates. Maximal degree in co-relation 102. Up to 18 conditions per place. [2022-11-25 17:46:46,559 INFO L137 encePairwiseOnDemand]: 771/776 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2022-11-25 17:46:46,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 19 transitions, 119 flow [2022-11-25 17:46:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2048 transitions. [2022-11-25 17:46:46,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43986254295532645 [2022-11-25 17:46:46,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2048 transitions. [2022-11-25 17:46:46,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2048 transitions. [2022-11-25 17:46:46,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:46,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2048 transitions. [2022-11-25 17:46:46,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 341.3333333333333) internal successors, (2048), 6 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:46,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:46,581 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 776.0) internal successors, (5432), 7 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:46,581 INFO L175 Difference]: Start difference. First operand has 43 places, 15 transitions, 75 flow. Second operand 6 states and 2048 transitions. [2022-11-25 17:46:46,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 19 transitions, 119 flow [2022-11-25 17:46:46,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 88 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-11-25 17:46:46,583 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2022-11-25 17:46:46,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=776, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2022-11-25 17:46:46,584 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-11-25 17:46:46,584 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2022-11-25 17:46:46,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 339.42857142857144) internal successors, (2376), 7 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:46,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-25 17:46:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-11-25 17:46:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-25 17:46:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-25 17:46:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-25 17:46:46,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-25 17:46:46,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:46:46,589 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1] [2022-11-25 17:46:46,594 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:46:46,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:46:46,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:46:46 BasicIcfg [2022-11-25 17:46:46,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:46:46,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:46:46,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:46:46,599 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:46:46,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:59" (3/4) ... [2022-11-25 17:46:46,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:46:46,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_read_nvram [2022-11-25 17:46:46,609 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_nvram_llseek [2022-11-25 17:46:46,614 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2022-11-25 17:46:46,614 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-25 17:46:46,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 17:46:46,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:46:46,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:46:46,656 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:46:46,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:46:46,657 INFO L158 Benchmark]: Toolchain (without parser) took 595049.57ms. Allocated memory was 167.8MB in the beginning and 606.1MB in the end (delta: 438.3MB). Free memory was 123.8MB in the beginning and 454.2MB in the end (delta: -330.4MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,657 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:46:46,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6610.55ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 123.8MB in the beginning and 143.0MB in the end (delta: -19.2MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 201.70ms. Allocated memory is still 224.4MB. Free memory was 143.0MB in the beginning and 133.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,658 INFO L158 Benchmark]: Boogie Preprocessor took 96.76ms. Allocated memory is still 224.4MB. Free memory was 133.6MB in the beginning and 129.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,658 INFO L158 Benchmark]: RCFGBuilder took 1095.60ms. Allocated memory is still 224.4MB. Free memory was 129.4MB in the beginning and 88.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,659 INFO L158 Benchmark]: TraceAbstraction took 586977.37ms. Allocated memory was 224.4MB in the beginning and 606.1MB in the end (delta: 381.7MB). Free memory was 87.4MB in the beginning and 458.4MB in the end (delta: -370.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,659 INFO L158 Benchmark]: Witness Printer took 57.71ms. Allocated memory is still 606.1MB. Free memory was 458.4MB in the beginning and 454.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:46:46,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 6610.55ms. Allocated memory was 167.8MB in the beginning and 224.4MB in the end (delta: 56.6MB). Free memory was 123.8MB in the beginning and 143.0MB in the end (delta: -19.2MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 201.70ms. Allocated memory is still 224.4MB. Free memory was 143.0MB in the beginning and 133.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.76ms. Allocated memory is still 224.4MB. Free memory was 133.6MB in the beginning and 129.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1095.60ms. Allocated memory is still 224.4MB. Free memory was 129.4MB in the beginning and 88.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 586977.37ms. Allocated memory was 224.4MB in the beginning and 606.1MB in the end (delta: 381.7MB). Free memory was 87.4MB in the beginning and 458.4MB in the end (delta: -370.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 57.71ms. Allocated memory is still 606.1MB. Free memory was 458.4MB in the beginning and 454.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 555.8s, 350 PlacesBefore, 24 PlacesAfterwards, 358 TransitionsBefore, 21 TransitionsAfterwards, 12788 CoEnabledTransitionPairs, 10 FixpointIterations, 191 TrivialSequentialCompositions, 154 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 34 ConcurrentYvCompositions, 11 ChoiceCompositions, 407 TotalNumberOfCompositions, 14014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12099, independent: 11941, independent conditional: 0, independent unconditional: 11941, dependent: 157, dependent conditional: 0, dependent unconditional: 157, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9236, independent: 9189, independent conditional: 0, independent unconditional: 9189, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9236, independent: 9168, independent conditional: 0, independent unconditional: 9168, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2389, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 2104, unknown conditional: 0, unknown unconditional: 2104] ], Cache Queries: [ total: 12099, independent: 2752, independent conditional: 0, independent unconditional: 2752, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 9236, unknown conditional: 0, unknown unconditional: 9236] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 498 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 586.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 556.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2592 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1855 mSDsluCounter, 1337 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1215 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3909 IncrementalHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 122 mSDtfsCounter, 3909 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:46:46,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368f045c-349e-4c77-8e01-0f91301f6c2a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE