./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/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_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8 --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-2329fc7 [2022-12-13 20:22:05,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:22:05,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:22:05,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:22:05,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:22:05,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:22:05,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:22:05,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:22:05,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:22:05,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:22:05,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:22:05,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:22:05,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:22:05,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:22:05,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:22:05,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:22:05,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:22:05,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:22:05,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:22:05,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:22:05,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:22:05,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:22:05,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:22:05,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:22:05,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:22:05,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:22:05,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:22:05,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:22:05,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:22:05,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:22:05,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:22:05,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:22:05,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:22:05,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:22:05,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:22:05,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:22:05,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:22:05,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:22:05,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:22:05,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:22:05,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:22:05,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:22:05,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:22:05,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:22:05,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:22:05,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:22:05,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:22:05,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:22:05,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:22:05,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:22:05,303 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:22:05,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:22:05,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:22:05,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:22:05,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:22:05,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:22:05,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:22:05,306 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:22:05,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:22:05,306 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:22:05,306 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_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 423d8d6205a6cc6142dcdd2c64b72565885efc66c9127b3f2569a3e2890b0e68 [2022-12-13 20:22:05,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:22:05,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:22:05,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:22:05,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:22:05,481 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:22:05,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i [2022-12-13 20:22:08,019 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:22:08,350 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:22:08,350 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i [2022-12-13 20:22:08,369 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/data/5c18d35be/70225370100b492f84f23825c173d4e6/FLAG12fa63221 [2022-12-13 20:22:08,557 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/data/5c18d35be/70225370100b492f84f23825c173d4e6 [2022-12-13 20:22:08,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:22:08,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:22:08,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:22:08,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:22:08,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:22:08,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:22:08" (1/1) ... [2022-12-13 20:22:08,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14800cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:08, skipping insertion in model container [2022-12-13 20:22:08,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:22:08" (1/1) ... [2022-12-13 20:22:08,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:22:08,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:22:08,956 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_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i[5469,5482] [2022-12-13 20:22:09,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:09,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:09,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:10,045 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-13 20:22:10,050 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:10,055 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:10,064 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:10,179 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-13 20:22:10,183 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-13 20:22:10,316 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-13 20:22:10,484 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-13 20:22:10,491 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-13 20:22:10,543 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-13 20:22:10,546 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-13 20:22:10,759 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-13 20:22:10,762 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-13 20:22:10,764 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-13 20:22:10,835 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-13 20:22:10,835 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-13 20:22:10,838 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-13 20:22:10,838 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-13 20:22:10,959 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-13 20:22:10,985 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-13 20:22:11,129 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-13 20:22:11,132 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-13 20:22:11,270 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-13 20:22:11,418 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-13 20:22:11,419 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-13 20:22:11,419 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-13 20:22:12,185 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-13 20:22:12,185 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,188 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,191 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,193 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,705 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-13 20:22:12,709 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-13 20:22:12,713 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-13 20:22:12,720 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-13 20:22:12,720 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-13 20:22:12,724 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-13 20:22:12,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:22:12,755 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:22:12,766 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_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_read_nvram.i[5469,5482] [2022-12-13 20:22:12,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:22:12,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:22:12,799 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-13 20:22:12,800 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:12,800 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:12,800 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-13 20:22:12,804 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-13 20:22:12,805 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-13 20:22:12,807 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-13 20:22:12,816 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-13 20:22:12,817 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-13 20:22:12,819 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-13 20:22:12,819 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-13 20:22:12,827 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-13 20:22:12,827 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-13 20:22:12,827 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-13 20:22:12,830 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-13 20:22:12,830 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-13 20:22:12,831 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-13 20:22:12,831 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-13 20:22:12,838 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-13 20:22:12,840 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-13 20:22:12,844 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-13 20:22:12,845 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-13 20:22:12,849 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-13 20:22:12,852 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-13 20:22:12,852 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-13 20:22:12,853 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-13 20:22:12,979 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-13 20:22:12,980 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,981 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,984 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:12,986 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-13 20:22:13,016 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-13 20:22:13,017 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-13 20:22:13,018 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-13 20:22:13,019 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-13 20:22:13,019 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-13 20:22:13,020 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-13 20:22:13,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:22:13,452 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:22:13,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13 WrapperNode [2022-12-13 20:22:13,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:22:13,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:22:13,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:22:13,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:22:13,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,545 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 15, statements flattened = 314 [2022-12-13 20:22:13,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:22:13,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:22:13,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:22:13,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:22:13,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:22:13,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:22:13,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:22:13,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:22:13,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (1/1) ... [2022-12-13 20:22:13,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:22:13,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:22:13,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:22:13,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:22:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:22:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:22:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:22:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:22:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:22:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-12-13 20:22:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:22:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_llseek [2022-12-13 20:22:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_llseek [2022-12-13 20:22:13,644 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:22:13,940 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:22:13,942 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:22:14,274 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:22:14,282 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:22:14,283 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 20:22:14,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:22:14 BoogieIcfgContainer [2022-12-13 20:22:14,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:22:14,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:22:14,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:22:14,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:22:14,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:22:08" (1/3) ... [2022-12-13 20:22:14,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c796ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:22:14, skipping insertion in model container [2022-12-13 20:22:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:22:13" (2/3) ... [2022-12-13 20:22:14,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c796ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:22:14, skipping insertion in model container [2022-12-13 20:22:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:22:14" (3/3) ... [2022-12-13 20:22:14,290 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_llseek_read_nvram.i [2022-12-13 20:22:14,296 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:22:14,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:22:14,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:22:14,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:22:14,371 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:22:14,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 369 transitions, 754 flow [2022-12-13 20:22:14,494 INFO L130 PetriNetUnfolder]: 15/367 cut-off events. [2022-12-13 20:22:14,494 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:22:14,502 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. [2022-12-13 20:22:14,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 369 transitions, 754 flow [2022-12-13 20:22:14,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 358 transitions, 725 flow [2022-12-13 20:22:14,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:22:14,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 358 transitions, 725 flow [2022-12-13 20:22:14,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 358 transitions, 725 flow [2022-12-13 20:22:14,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 358 transitions, 725 flow [2022-12-13 20:22:14,617 INFO L130 PetriNetUnfolder]: 15/358 cut-off events. [2022-12-13 20:22:14,617 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:22:14,619 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. [2022-12-13 20:22:14,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 12788 [2022-12-13 20:23:12,692 WARN L233 SmtUtils]: Spent 23.49s on a formula simplification that was a NOOP. DAG size: 479 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:23:31,424 WARN L233 SmtUtils]: Spent 18.72s on a formula simplification that was a NOOP. DAG size: 409 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:23:49,202 WARN L233 SmtUtils]: Spent 17.77s on a formula simplification that was a NOOP. DAG size: 479 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:24:03,163 WARN L233 SmtUtils]: Spent 13.95s on a formula simplification that was a NOOP. DAG size: 409 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:26:40,701 WARN L233 SmtUtils]: Spent 2.61m on a formula simplification. DAG size of input: 517 DAG size of output: 513 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:27:35,110 WARN L233 SmtUtils]: Spent 54.40s 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) [2022-12-13 20:29:29,550 WARN L233 SmtUtils]: Spent 1.91m on a formula simplification. DAG size of input: 527 DAG size of output: 523 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:30:09,870 WARN L233 SmtUtils]: Spent 40.31s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:30:09,885 INFO L134 LiptonReduction]: Checked pairs total: 14227 [2022-12-13 20:30:09,885 INFO L136 LiptonReduction]: Total number of compositions: 416 [2022-12-13 20:30:09,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:30:09,898 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;@7bb12054, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:30:09,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 20:30:09,905 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-12-13 20:30:09,905 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:30:09,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:09,906 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:30:09,906 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)] === [2022-12-13 20:30:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1773550846, now seen corresponding path program 1 times [2022-12-13 20:30:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271217943] [2022-12-13 20:30:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:10,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271217943] [2022-12-13 20:30:10,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271217943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:10,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:30:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574198463] [2022-12-13 20:30:10,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:30:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:30:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:30:10,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 785 [2022-12-13 20:30:10,597 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) [2022-12-13 20:30:10,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:10,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 785 [2022-12-13 20:30:10,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:10,937 INFO L130 PetriNetUnfolder]: 197/332 cut-off events. [2022-12-13 20:30:10,937 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 20:30:10,937 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. [2022-12-13 20:30:10,939 INFO L137 encePairwiseOnDemand]: 780/785 looper letters, 26 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2022-12-13 20:30:10,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 147 flow [2022-12-13 20:30:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:30:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:30:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2022-12-13 20:30:10,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45392781316348196 [2022-12-13 20:30:10,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2022-12-13 20:30:10,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2022-12-13 20:30:10,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:10,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2022-12-13 20:30:10,962 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) [2022-12-13 20:30:10,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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) [2022-12-13 20:30:10,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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) [2022-12-13 20:30:10,971 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 51 flow. Second operand 3 states and 1069 transitions. [2022-12-13 20:30:10,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 147 flow [2022-12-13 20:30:10,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:30:10,975 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 76 flow [2022-12-13 20:30:10,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:10,979 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-12-13 20:30:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 76 flow [2022-12-13 20:30:10,980 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) [2022-12-13 20:30:10,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:10,980 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:30:10,980 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)] === [2022-12-13 20:30:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 771220016, now seen corresponding path program 1 times [2022-12-13 20:30:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:10,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526448432] [2022-12-13 20:30:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:11,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:11,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526448432] [2022-12-13 20:30:11,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526448432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:11,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:11,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:30:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190338827] [2022-12-13 20:30:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:11,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:30:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:30:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:30:11,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 785 [2022-12-13 20:30:11,356 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) [2022-12-13 20:30:11,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:11,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 785 [2022-12-13 20:30:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:11,653 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2022-12-13 20:30:11,653 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 20:30:11,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 343 events. 192/343 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1246 event pairs, 85 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 480. Up to 199 conditions per place. [2022-12-13 20:30:11,654 INFO L137 encePairwiseOnDemand]: 781/785 looper letters, 24 selfloop transitions, 3 changer transitions 11/38 dead transitions. [2022-12-13 20:30:11,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 38 transitions, 193 flow [2022-12-13 20:30:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:30:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:30:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2022-12-13 20:30:11,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45307855626326965 [2022-12-13 20:30:11,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2022-12-13 20:30:11,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2022-12-13 20:30:11,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:11,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2022-12-13 20:30:11,662 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) [2022-12-13 20:30:11,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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) [2022-12-13 20:30:11,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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) [2022-12-13 20:30:11,667 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 76 flow. Second operand 3 states and 1067 transitions. [2022-12-13 20:30:11,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 38 transitions, 193 flow [2022-12-13 20:30:11,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:30:11,669 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 82 flow [2022-12-13 20:30:11,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:11,669 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-12-13 20:30:11,670 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 82 flow [2022-12-13 20:30:11,670 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) [2022-12-13 20:30:11,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:11,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:11,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:30:11,671 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)] === [2022-12-13 20:30:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 854500255, now seen corresponding path program 1 times [2022-12-13 20:30:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:11,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032885019] [2022-12-13 20:30:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:12,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032885019] [2022-12-13 20:30:12,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032885019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:12,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:12,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:30:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755551150] [2022-12-13 20:30:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:12,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:30:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:30:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:30:12,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 785 [2022-12-13 20:30:12,470 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) [2022-12-13 20:30:12,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:12,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 785 [2022-12-13 20:30:12,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:12,856 INFO L130 PetriNetUnfolder]: 126/253 cut-off events. [2022-12-13 20:30:12,856 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-12-13 20:30:12,857 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 23. Compared 992 event pairs, 21 based on Foata normal form. 7/260 useless extension candidates. Maximal degree in co-relation 502. Up to 127 conditions per place. [2022-12-13 20:30:12,858 INFO L137 encePairwiseOnDemand]: 780/785 looper letters, 24 selfloop transitions, 6 changer transitions 8/38 dead transitions. [2022-12-13 20:30:12,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 211 flow [2022-12-13 20:30:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:30:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:30:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1737 transitions. [2022-12-13 20:30:12,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44254777070063694 [2022-12-13 20:30:12,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1737 transitions. [2022-12-13 20:30:12,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1737 transitions. [2022-12-13 20:30:12,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:12,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1737 transitions. [2022-12-13 20:30:12,869 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) [2022-12-13 20:30:12,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 785.0) internal successors, (4710), 6 states have internal predecessors, (4710), 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) [2022-12-13 20:30:12,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 785.0) internal successors, (4710), 6 states have internal predecessors, (4710), 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) [2022-12-13 20:30:12,881 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 82 flow. Second operand 5 states and 1737 transitions. [2022-12-13 20:30:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 211 flow [2022-12-13 20:30:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:30:12,883 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 100 flow [2022-12-13 20:30:12,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:12,884 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2022-12-13 20:30:12,884 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 100 flow [2022-12-13 20:30:12,885 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) [2022-12-13 20:30:12,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:12,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:30:12,885 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)] === [2022-12-13 20:30:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1882137673, now seen corresponding path program 1 times [2022-12-13 20:30:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149405371] [2022-12-13 20:30:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:18,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:18,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149405371] [2022-12-13 20:30:18,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149405371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:18,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:18,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622207232] [2022-12-13 20:30:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:18,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 785 [2022-12-13 20:30:18,817 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) [2022-12-13 20:30:18,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:18,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 785 [2022-12-13 20:30:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:19,375 INFO L130 PetriNetUnfolder]: 157/336 cut-off events. [2022-12-13 20:30:19,375 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-12-13 20:30:19,376 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 1477 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. [2022-12-13 20:30:19,376 INFO L137 encePairwiseOnDemand]: 778/785 looper letters, 31 selfloop transitions, 10 changer transitions 14/55 dead transitions. [2022-12-13 20:30:19,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 328 flow [2022-12-13 20:30:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:30:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 20:30:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2765 transitions. [2022-12-13 20:30:19,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44028662420382164 [2022-12-13 20:30:19,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2765 transitions. [2022-12-13 20:30:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2765 transitions. [2022-12-13 20:30:19,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:19,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2765 transitions. [2022-12-13 20:30:19,393 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) [2022-12-13 20:30:19,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 785.0) internal successors, (7065), 9 states have internal predecessors, (7065), 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) [2022-12-13 20:30:19,407 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 785.0) internal successors, (7065), 9 states have internal predecessors, (7065), 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) [2022-12-13 20:30:19,407 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 100 flow. Second operand 8 states and 2765 transitions. [2022-12-13 20:30:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 328 flow [2022-12-13 20:30:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 55 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:30:19,409 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 142 flow [2022-12-13 20:30:19,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:19,410 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2022-12-13 20:30:19,411 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 142 flow [2022-12-13 20:30:19,412 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) [2022-12-13 20:30:19,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:19,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:19,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:30:19,413 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)] === [2022-12-13 20:30:19,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -950326426, now seen corresponding path program 1 times [2022-12-13 20:30:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:19,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835718302] [2022-12-13 20:30:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:19,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835718302] [2022-12-13 20:30:19,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835718302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:19,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:19,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:19,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129592880] [2022-12-13 20:30:19,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:19,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:19,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:20,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 785 [2022-12-13 20:30:20,127 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) [2022-12-13 20:30:20,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:20,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 785 [2022-12-13 20:30:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:20,556 INFO L130 PetriNetUnfolder]: 137/286 cut-off events. [2022-12-13 20:30:20,556 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2022-12-13 20:30:20,556 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 1177 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. [2022-12-13 20:30:20,557 INFO L137 encePairwiseOnDemand]: 779/785 looper letters, 28 selfloop transitions, 11 changer transitions 15/54 dead transitions. [2022-12-13 20:30:20,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 338 flow [2022-12-13 20:30:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:30:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 20:30:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2762 transitions. [2022-12-13 20:30:20,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43980891719745224 [2022-12-13 20:30:20,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2762 transitions. [2022-12-13 20:30:20,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2762 transitions. [2022-12-13 20:30:20,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:20,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2762 transitions. [2022-12-13 20:30:20,571 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) [2022-12-13 20:30:20,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 785.0) internal successors, (7065), 9 states have internal predecessors, (7065), 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) [2022-12-13 20:30:20,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 785.0) internal successors, (7065), 9 states have internal predecessors, (7065), 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) [2022-12-13 20:30:20,578 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 142 flow. Second operand 8 states and 2762 transitions. [2022-12-13 20:30:20,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 338 flow [2022-12-13 20:30:20,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 332 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 20:30:20,580 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 177 flow [2022-12-13 20:30:20,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:20,581 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2022-12-13 20:30:20,581 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 177 flow [2022-12-13 20:30:20,582 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) [2022-12-13 20:30:20,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:20,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:30:20,582 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)] === [2022-12-13 20:30:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1667008213, now seen corresponding path program 2 times [2022-12-13 20:30:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:20,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952640378] [2022-12-13 20:30:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952640378] [2022-12-13 20:30:21,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952640378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:21,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:21,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522645851] [2022-12-13 20:30:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:21,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:21,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:21,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 785 [2022-12-13 20:30:21,333 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) [2022-12-13 20:30:21,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:21,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 785 [2022-12-13 20:30:21,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:21,843 INFO L130 PetriNetUnfolder]: 119/262 cut-off events. [2022-12-13 20:30:21,843 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2022-12-13 20:30:21,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 262 events. 119/262 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1110 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. [2022-12-13 20:30:21,844 INFO L137 encePairwiseOnDemand]: 778/785 looper letters, 22 selfloop transitions, 9 changer transitions 14/45 dead transitions. [2022-12-13 20:30:21,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 327 flow [2022-12-13 20:30:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:30:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:30:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2081 transitions. [2022-12-13 20:30:21,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4418259023354565 [2022-12-13 20:30:21,848 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2081 transitions. [2022-12-13 20:30:21,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2081 transitions. [2022-12-13 20:30:21,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:21,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2081 transitions. [2022-12-13 20:30:21,851 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) [2022-12-13 20:30:21,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:21,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:21,855 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 177 flow. Second operand 6 states and 2081 transitions. [2022-12-13 20:30:21,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 327 flow [2022-12-13 20:30:21,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 316 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 20:30:21,858 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 180 flow [2022-12-13 20:30:21,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:21,858 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2022-12-13 20:30:21,858 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 180 flow [2022-12-13 20:30:21,859 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) [2022-12-13 20:30:21,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:21,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:30:21,859 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)] === [2022-12-13 20:30:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1673898583, now seen corresponding path program 3 times [2022-12-13 20:30:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:21,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740829695] [2022-12-13 20:30:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740829695] [2022-12-13 20:30:22,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740829695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:22,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:22,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069666718] [2022-12-13 20:30:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:22,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:22,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 785 [2022-12-13 20:30:22,493 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) [2022-12-13 20:30:22,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:22,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 785 [2022-12-13 20:30:22,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:22,933 INFO L130 PetriNetUnfolder]: 107/244 cut-off events. [2022-12-13 20:30:22,933 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2022-12-13 20:30:22,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 244 events. 107/244 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1008 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. [2022-12-13 20:30:22,934 INFO L137 encePairwiseOnDemand]: 779/785 looper letters, 21 selfloop transitions, 8 changer transitions 21/50 dead transitions. [2022-12-13 20:30:22,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 343 flow [2022-12-13 20:30:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:30:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:30:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2428 transitions. [2022-12-13 20:30:22,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4418562329390355 [2022-12-13 20:30:22,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2428 transitions. [2022-12-13 20:30:22,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2428 transitions. [2022-12-13 20:30:22,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:22,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2428 transitions. [2022-12-13 20:30:22,941 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) [2022-12-13 20:30:22,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 785.0) internal successors, (6280), 8 states have internal predecessors, (6280), 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) [2022-12-13 20:30:22,945 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 785.0) internal successors, (6280), 8 states have internal predecessors, (6280), 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) [2022-12-13 20:30:22,945 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 180 flow. Second operand 7 states and 2428 transitions. [2022-12-13 20:30:22,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 343 flow [2022-12-13 20:30:22,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 323 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 20:30:22,947 INFO L231 Difference]: Finished difference. Result has 47 places, 25 transitions, 154 flow [2022-12-13 20:30:22,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:22,948 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2022-12-13 20:30:22,948 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 154 flow [2022-12-13 20:30:22,948 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) [2022-12-13 20:30:22,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:22,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:22,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:30:22,949 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)] === [2022-12-13 20:30:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1638811564, now seen corresponding path program 2 times [2022-12-13 20:30:22,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:22,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069957536] [2022-12-13 20:30:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:26,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069957536] [2022-12-13 20:30:26,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069957536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:26,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:26,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720563408] [2022-12-13 20:30:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:26,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:26,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:26,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:27,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 785 [2022-12-13 20:30:27,076 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) [2022-12-13 20:30:27,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:27,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 785 [2022-12-13 20:30:27,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:27,445 INFO L130 PetriNetUnfolder]: 119/262 cut-off events. [2022-12-13 20:30:27,445 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-12-13 20:30:27,446 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 22. Compared 1051 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. [2022-12-13 20:30:27,446 INFO L137 encePairwiseOnDemand]: 779/785 looper letters, 23 selfloop transitions, 6 changer transitions 17/46 dead transitions. [2022-12-13 20:30:27,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 309 flow [2022-12-13 20:30:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:30:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:30:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2071 transitions. [2022-12-13 20:30:27,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4397027600849257 [2022-12-13 20:30:27,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2071 transitions. [2022-12-13 20:30:27,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2071 transitions. [2022-12-13 20:30:27,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:27,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2071 transitions. [2022-12-13 20:30:27,452 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) [2022-12-13 20:30:27,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:27,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:27,456 INFO L175 Difference]: Start difference. First operand has 47 places, 25 transitions, 154 flow. Second operand 6 states and 2071 transitions. [2022-12-13 20:30:27,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 309 flow [2022-12-13 20:30:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 292 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 20:30:27,457 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 139 flow [2022-12-13 20:30:27,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, 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} [2022-12-13 20:30:27,458 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2022-12-13 20:30:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 139 flow [2022-12-13 20:30:27,459 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) [2022-12-13 20:30:27,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:27,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:30:27,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 20:30:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1882107934, now seen corresponding path program 3 times [2022-12-13 20:30:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:27,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108325164] [2022-12-13 20:30:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:27,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:27,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108325164] [2022-12-13 20:30:27,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108325164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:27,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:27,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:30:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179273915] [2022-12-13 20:30:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:27,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:30:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:30:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:30:28,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 785 [2022-12-13 20:30:28,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 139 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) [2022-12-13 20:30:28,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:28,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 785 [2022-12-13 20:30:28,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:28,440 INFO L130 PetriNetUnfolder]: 78/179 cut-off events. [2022-12-13 20:30:28,440 INFO L131 PetriNetUnfolder]: For 383/383 co-relation queries the response was YES. [2022-12-13 20:30:28,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 179 events. 78/179 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 612 event pairs, 20 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 585. Up to 60 conditions per place. [2022-12-13 20:30:28,441 INFO L137 encePairwiseOnDemand]: 780/785 looper letters, 13 selfloop transitions, 3 changer transitions 25/41 dead transitions. [2022-12-13 20:30:28,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 260 flow [2022-12-13 20:30:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:30:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:30:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2413 transitions. [2022-12-13 20:30:28,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4391264786169245 [2022-12-13 20:30:28,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2413 transitions. [2022-12-13 20:30:28,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2413 transitions. [2022-12-13 20:30:28,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:28,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2413 transitions. [2022-12-13 20:30:28,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 344.7142857142857) internal successors, (2413), 7 states have internal predecessors, (2413), 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) [2022-12-13 20:30:28,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 785.0) internal successors, (6280), 8 states have internal predecessors, (6280), 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) [2022-12-13 20:30:28,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 785.0) internal successors, (6280), 8 states have internal predecessors, (6280), 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) [2022-12-13 20:30:28,450 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 139 flow. Second operand 7 states and 2413 transitions. [2022-12-13 20:30:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 260 flow [2022-12-13 20:30:28,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 20:30:28,452 INFO L231 Difference]: Finished difference. Result has 44 places, 14 transitions, 74 flow [2022-12-13 20:30:28,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, PETRI_DIFFERENCE_MINUEND_FLOW=115, 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=7, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=14} [2022-12-13 20:30:28,452 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 20 predicate places. [2022-12-13 20:30:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 14 transitions, 74 flow [2022-12-13 20:30:28,453 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) [2022-12-13 20:30:28,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:30:28,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:30:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:30:28,453 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 20:30:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:30:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 138216845, now seen corresponding path program 4 times [2022-12-13 20:30:28,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:30:28,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009093478] [2022-12-13 20:30:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:30:28,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:30:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:30:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:30:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:30:32,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009093478] [2022-12-13 20:30:32,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009093478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:30:32,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:30:32,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:30:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677995330] [2022-12-13 20:30:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:30:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:30:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:30:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:30:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:30:32,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 785 [2022-12-13 20:30:32,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 14 transitions, 74 flow. Second operand has 8 states, 8 states have (on average 335.25) internal successors, (2682), 8 states have internal predecessors, (2682), 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) [2022-12-13 20:30:32,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:30:32,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 785 [2022-12-13 20:30:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:30:33,318 INFO L130 PetriNetUnfolder]: 5/21 cut-off events. [2022-12-13 20:30:33,318 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 20:30:33,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 21 events. 5/21 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 6/27 useless extension candidates. Maximal degree in co-relation 76. Up to 12 conditions per place. [2022-12-13 20:30:33,318 INFO L137 encePairwiseOnDemand]: 780/785 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2022-12-13 20:30:33,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 14 transitions, 98 flow [2022-12-13 20:30:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:30:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:30:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2019 transitions. [2022-12-13 20:30:33,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4286624203821656 [2022-12-13 20:30:33,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2019 transitions. [2022-12-13 20:30:33,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2019 transitions. [2022-12-13 20:30:33,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:30:33,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2019 transitions. [2022-12-13 20:30:33,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 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) [2022-12-13 20:30:33,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:33,326 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 785.0) internal successors, (5495), 7 states have internal predecessors, (5495), 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) [2022-12-13 20:30:33,326 INFO L175 Difference]: Start difference. First operand has 44 places, 14 transitions, 74 flow. Second operand 6 states and 2019 transitions. [2022-12-13 20:30:33,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 14 transitions, 98 flow [2022-12-13 20:30:33,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 14 transitions, 63 flow, removed 2 selfloop flow, removed 15 redundant places. [2022-12-13 20:30:33,327 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2022-12-13 20:30:33,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2022-12-13 20:30:33,327 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2022-12-13 20:30:33,327 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2022-12-13 20:30:33,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 335.25) internal successors, (2682), 8 states have internal predecessors, (2682), 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) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-13 20:30:33,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-13 20:30:33,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:30:33,331 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1] [2022-12-13 20:30:33,334 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:30:33,334 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:30:33,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:30:33 BasicIcfg [2022-12-13 20:30:33,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:30:33,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:30:33,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:30:33,337 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:30:33,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:22:14" (3/4) ... [2022-12-13 20:30:33,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:30:33,343 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_read_nvram [2022-12-13 20:30:33,343 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_nvram_llseek [2022-12-13 20:30:33,346 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2022-12-13 20:30:33,347 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-13 20:30:33,347 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-13 20:30:33,347 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:30:33,347 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:30:33,373 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:30:33,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:30:33,374 INFO L158 Benchmark]: Toolchain (without parser) took 504813.85ms. Allocated memory was 132.1MB in the beginning and 700.4MB in the end (delta: 568.3MB). Free memory was 90.3MB in the beginning and 255.7MB in the end (delta: -165.5MB). Peak memory consumption was 404.6MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,374 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 107.0MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:30:33,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4891.71ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 89.8MB in the beginning and 83.5MB in the end (delta: 6.3MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.97ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 74.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,374 INFO L158 Benchmark]: Boogie Preprocessor took 33.54ms. Allocated memory is still 159.4MB. Free memory was 74.1MB in the beginning and 69.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,374 INFO L158 Benchmark]: RCFGBuilder took 704.30ms. Allocated memory is still 159.4MB. Free memory was 69.9MB in the beginning and 81.4MB in the end (delta: -11.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,375 INFO L158 Benchmark]: TraceAbstraction took 499050.28ms. Allocated memory was 159.4MB in the beginning and 700.4MB in the end (delta: 541.1MB). Free memory was 81.4MB in the beginning and 259.9MB in the end (delta: -178.6MB). Peak memory consumption was 362.5MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,375 INFO L158 Benchmark]: Witness Printer took 36.75ms. Allocated memory is still 700.4MB. Free memory was 259.9MB in the beginning and 255.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:30:33,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 107.0MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4891.71ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 89.8MB in the beginning and 83.5MB in the end (delta: 6.3MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.97ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 74.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.54ms. Allocated memory is still 159.4MB. Free memory was 74.1MB in the beginning and 69.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 704.30ms. Allocated memory is still 159.4MB. Free memory was 69.9MB in the beginning and 81.4MB in the end (delta: -11.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * TraceAbstraction took 499050.28ms. Allocated memory was 159.4MB in the beginning and 700.4MB in the end (delta: 541.1MB). Free memory was 81.4MB in the beginning and 259.9MB in the end (delta: -178.6MB). Peak memory consumption was 362.5MB. Max. memory is 16.1GB. * Witness Printer took 36.75ms. Allocated memory is still 700.4MB. Free memory was 259.9MB in the beginning and 255.7MB 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: 475.4s, 350 PlacesBefore, 24 PlacesAfterwards, 358 TransitionsBefore, 21 TransitionsAfterwards, 12788 CoEnabledTransitionPairs, 10 FixpointIterations, 202 TrivialSequentialCompositions, 153 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 35 ConcurrentYvCompositions, 11 ChoiceCompositions, 416 TotalNumberOfCompositions, 14227 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11924, independent: 11759, independent conditional: 0, independent unconditional: 11759, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7426, independent: 7383, independent conditional: 0, independent unconditional: 7383, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11924, independent: 4376, independent conditional: 0, independent unconditional: 4376, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 7426, unknown conditional: 0, unknown unconditional: 7426] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: 498.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 475.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2594 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1858 mSDsluCounter, 1368 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1249 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3894 IncrementalHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 119 mSDtfsCounter, 3894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=6, InterpolantAutomatonStates: 59, 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, 0.6s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 835 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! [2022-12-13 20:30:33,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8a2d8d-ed48-4cd9-b0fa-114ec7e284c8/bin/uautomizer-uyxdKDjOR8/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