/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:44:21,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:44:21,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:44:21,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:44:21,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:44:21,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:44:21,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:44:21,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:44:21,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:44:21,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:44:21,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:44:21,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:44:21,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:44:21,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:44:21,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:44:21,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:44:21,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:44:21,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:44:21,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:44:21,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:44:21,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:44:21,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:44:21,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:44:21,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:44:21,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:44:21,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:44:21,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:44:21,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:44:21,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:44:21,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:44:21,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:44:21,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:44:21,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:44:21,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:44:21,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:44:21,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:44:21,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:44:21,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:44:21,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:44:21,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:44:21,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:44:21,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:44:21,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:44:21,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:44:21,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:44:21,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:44:21,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:44:21,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:44:21,862 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:44:21,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:44:21,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:44:21,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:44:21,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:44:21,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:44:21,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:44:21,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:44:21,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:44:21,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:44:21,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:44:21,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:44:21,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:44:22,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:44:22,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:44:22,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:44:22,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:44:22,115 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:44:22,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-06 16:44:23,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:44:23,513 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:44:23,513 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-06 16:44:23,543 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a2379380/3d9e7819ce9444719e8875cbf187957d/FLAGb1864456e [2022-12-06 16:44:23,555 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a2379380/3d9e7819ce9444719e8875cbf187957d [2022-12-06 16:44:23,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:44:23,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:44:23,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:44:23,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:44:23,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:44:23,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:44:23" (1/1) ... [2022-12-06 16:44:23,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b8741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:23, skipping insertion in model container [2022-12-06 16:44:23,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:44:23" (1/1) ... [2022-12-06 16:44:23,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:44:23,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:44:23,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i[5469,5482] [2022-12-06 16:44:24,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:24,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:24,615 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-06 16:44:24,619 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:24,622 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:24,628 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:24,684 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-06 16:44:24,689 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-06 16:44:24,759 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-06 16:44:24,888 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-06 16:44:24,893 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-06 16:44:24,931 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-06 16:44:24,934 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-06 16:44:25,122 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-06 16:44:25,125 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-06 16:44:25,127 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-06 16:44:25,200 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-06 16:44:25,200 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-06 16:44:25,202 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-06 16:44:25,202 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-06 16:44:25,311 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-06 16:44:25,336 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-06 16:44:25,435 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-06 16:44:25,438 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-06 16:44:25,582 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-06 16:44:25,706 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-06 16:44:25,731 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-06 16:44:25,732 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-06 16:44:26,283 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-06 16:44:26,284 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,288 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,293 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,308 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,615 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-06 16:44:26,634 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-06 16:44:26,638 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-06 16:44:26,643 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-06 16:44:26,644 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-06 16:44:26,646 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-06 16:44:26,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:44:26,667 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:44:26,676 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i[5469,5482] [2022-12-06 16:44:26,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:44:26,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:44:26,697 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-06 16:44:26,697 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:26,698 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:26,698 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-06 16:44:26,700 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-06 16:44:26,701 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-06 16:44:26,702 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-06 16:44:26,709 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-06 16:44:26,710 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-06 16:44:26,711 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-06 16:44:26,711 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-06 16:44:26,716 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-06 16:44:26,717 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-06 16:44:26,717 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-06 16:44:26,719 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-06 16:44:26,719 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-06 16:44:26,719 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-06 16:44:26,719 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-06 16:44:26,724 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-06 16:44:26,725 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-06 16:44:26,728 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-06 16:44:26,728 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-06 16:44:26,731 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-06 16:44:26,733 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-06 16:44:26,733 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-06 16:44:26,733 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-06 16:44:26,768 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-06 16:44:26,769 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,771 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,773 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,775 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-06 16:44:26,851 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-06 16:44:26,852 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-06 16:44:26,853 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-06 16:44:26,854 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-06 16:44:26,854 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-06 16:44:26,855 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-06 16:44:26,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:44:27,296 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:44:27,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27 WrapperNode [2022-12-06 16:44:27,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:44:27,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:44:27,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:44:27,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:44:27,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,424 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 16, statements flattened = 282 [2022-12-06 16:44:27,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:44:27,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:44:27,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:44:27,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:44:27,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:44:27,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:44:27,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:44:27,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:44:27,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (1/1) ... [2022-12-06 16:44:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:44:27,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:44:27,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 16:44:27,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 16:44:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:44:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 16:44:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-06 16:44:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-06 16:44:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:44:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:44:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:44:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-06 16:44:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-06 16:44:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:44:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_llseek [2022-12-06 16:44:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_llseek [2022-12-06 16:44:27,547 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:44:27,949 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:44:27,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:44:28,304 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:44:28,332 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:44:28,333 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:44:28,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:44:28 BoogieIcfgContainer [2022-12-06 16:44:28,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:44:28,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:44:28,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:44:28,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:44:28,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:44:23" (1/3) ... [2022-12-06 16:44:28,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faafb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:44:28, skipping insertion in model container [2022-12-06 16:44:28,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:44:27" (2/3) ... [2022-12-06 16:44:28,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faafb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:44:28, skipping insertion in model container [2022-12-06 16:44:28,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:44:28" (3/3) ... [2022-12-06 16:44:28,340 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-06 16:44:28,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:44:28,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:44:28,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:44:28,425 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 16:44:28,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 293 transitions, 602 flow [2022-12-06 16:44:28,536 INFO L130 PetriNetUnfolder]: 11/291 cut-off events. [2022-12-06 16:44:28,536 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 16:44:28,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 291 events. 11/291 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 228 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 229. Up to 5 conditions per place. [2022-12-06 16:44:28,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 293 transitions, 602 flow [2022-12-06 16:44:28,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 283 transitions, 575 flow [2022-12-06 16:44:28,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:44:28,561 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=false, 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;@5f0aeb76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:44:28,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 16:44:28,599 INFO L130 PetriNetUnfolder]: 9/260 cut-off events. [2022-12-06 16:44:28,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:44:28,599 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:28,600 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:28,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash 855174999, now seen corresponding path program 1 times [2022-12-06 16:44:28,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:28,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587126743] [2022-12-06 16:44:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:29,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587126743] [2022-12-06 16:44:29,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587126743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:29,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:44:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149478065] [2022-12-06 16:44:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:44:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:44:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:44:29,392 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 293 [2022-12-06 16:44:29,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 283 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 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) [2022-12-06 16:44:29,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:29,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 293 [2022-12-06 16:44:29,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:29,856 INFO L130 PetriNetUnfolder]: 268/1187 cut-off events. [2022-12-06 16:44:29,857 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-12-06 16:44:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1187 events. 268/1187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7162 event pairs, 92 based on Foata normal form. 7/1095 useless extension candidates. Maximal degree in co-relation 1176. Up to 253 conditions per place. [2022-12-06 16:44:29,869 INFO L137 encePairwiseOnDemand]: 282/293 looper letters, 55 selfloop transitions, 8 changer transitions 44/338 dead transitions. [2022-12-06 16:44:29,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 338 transitions, 927 flow [2022-12-06 16:44:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-06 16:44:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-06 16:44:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3002 transitions. [2022-12-06 16:44:29,884 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.853811149032992 [2022-12-06 16:44:29,886 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 10 predicate places. [2022-12-06 16:44:29,886 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 338 transitions, 927 flow [2022-12-06 16:44:29,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 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) [2022-12-06 16:44:29,887 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:29,887 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:44:29,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 697479891, now seen corresponding path program 1 times [2022-12-06 16:44:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307779800] [2022-12-06 16:44:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307779800] [2022-12-06 16:44:30,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307779800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:30,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:30,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827131805] [2022-12-06 16:44:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:31,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:31,004 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:31,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 338 transitions, 927 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:31,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:31,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:31,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:32,396 INFO L130 PetriNetUnfolder]: 989/3793 cut-off events. [2022-12-06 16:44:32,396 INFO L131 PetriNetUnfolder]: For 717/895 co-relation queries the response was YES. [2022-12-06 16:44:32,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 3793 events. 989/3793 cut-off events. For 717/895 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 33308 event pairs, 52 based on Foata normal form. 38/3582 useless extension candidates. Maximal degree in co-relation 6549. Up to 701 conditions per place. [2022-12-06 16:44:32,412 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 131 selfloop transitions, 31 changer transitions 175/557 dead transitions. [2022-12-06 16:44:32,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 557 transitions, 2464 flow [2022-12-06 16:44:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 16:44:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 16:44:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9254 transitions. [2022-12-06 16:44:32,424 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8098363524984685 [2022-12-06 16:44:32,425 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 48 predicate places. [2022-12-06 16:44:32,425 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 557 transitions, 2464 flow [2022-12-06 16:44:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:32,427 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:32,427 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:44:32,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:32,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1360600997, now seen corresponding path program 2 times [2022-12-06 16:44:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:32,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381560660] [2022-12-06 16:44:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:32,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381560660] [2022-12-06 16:44:33,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381560660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:33,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:33,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253754343] [2022-12-06 16:44:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:33,257 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:33,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 557 transitions, 2464 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:33,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:33,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:33,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:34,662 INFO L130 PetriNetUnfolder]: 1422/5292 cut-off events. [2022-12-06 16:44:34,662 INFO L131 PetriNetUnfolder]: For 2045/3819 co-relation queries the response was YES. [2022-12-06 16:44:34,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12268 conditions, 5292 events. 1422/5292 cut-off events. For 2045/3819 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 50417 event pairs, 48 based on Foata normal form. 324/5260 useless extension candidates. Maximal degree in co-relation 11830. Up to 973 conditions per place. [2022-12-06 16:44:34,688 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 199 selfloop transitions, 45 changer transitions 302/766 dead transitions. [2022-12-06 16:44:34,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 766 transitions, 4770 flow [2022-12-06 16:44:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 16:44:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 16:44:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8095 transitions. [2022-12-06 16:44:34,700 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8125878337683197 [2022-12-06 16:44:34,701 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 81 predicate places. [2022-12-06 16:44:34,701 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 766 transitions, 4770 flow [2022-12-06 16:44:34,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:34,703 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:34,703 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:34,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:44:34,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash 51828101, now seen corresponding path program 3 times [2022-12-06 16:44:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:34,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296982610] [2022-12-06 16:44:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:35,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296982610] [2022-12-06 16:44:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296982610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:35,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:35,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423058158] [2022-12-06 16:44:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:35,558 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:35,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 766 transitions, 4770 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:35,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:35,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:35,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:37,412 INFO L130 PetriNetUnfolder]: 2287/8589 cut-off events. [2022-12-06 16:44:37,413 INFO L131 PetriNetUnfolder]: For 5987/10997 co-relation queries the response was YES. [2022-12-06 16:44:37,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 8589 events. 2287/8589 cut-off events. For 5987/10997 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 92203 event pairs, 100 based on Foata normal form. 669/8656 useless extension candidates. Maximal degree in co-relation 23054. Up to 1543 conditions per place. [2022-12-06 16:44:37,523 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 293 selfloop transitions, 63 changer transitions 470/1046 dead transitions. [2022-12-06 16:44:37,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1046 transitions, 8660 flow [2022-12-06 16:44:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:44:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:44:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10480 transitions. [2022-12-06 16:44:37,543 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8129072292894819 [2022-12-06 16:44:37,544 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 124 predicate places. [2022-12-06 16:44:37,545 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 1046 transitions, 8660 flow [2022-12-06 16:44:37,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:37,546 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:37,547 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:37,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:44:37,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1225972665, now seen corresponding path program 4 times [2022-12-06 16:44:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:37,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269159871] [2022-12-06 16:44:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:38,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269159871] [2022-12-06 16:44:38,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269159871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:38,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:38,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012851215] [2022-12-06 16:44:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:38,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:38,303 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:38,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 1046 transitions, 8660 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:38,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:38,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:38,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:40,336 INFO L130 PetriNetUnfolder]: 2290/8639 cut-off events. [2022-12-06 16:44:40,336 INFO L131 PetriNetUnfolder]: For 9996/17626 co-relation queries the response was YES. [2022-12-06 16:44:40,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27614 conditions, 8639 events. 2290/8639 cut-off events. For 9996/17626 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 93150 event pairs, 88 based on Foata normal form. 763/8815 useless extension candidates. Maximal degree in co-relation 27064. Up to 1559 conditions per place. [2022-12-06 16:44:40,381 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 306 selfloop transitions, 61 changer transitions 513/1100 dead transitions. [2022-12-06 16:44:40,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1100 transitions, 10963 flow [2022-12-06 16:44:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 16:44:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 16:44:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11709 transitions. [2022-12-06 16:44:40,393 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8155603538343665 [2022-12-06 16:44:40,396 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 172 predicate places. [2022-12-06 16:44:40,396 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 1100 transitions, 10963 flow [2022-12-06 16:44:40,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:40,397 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:40,397 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:40,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:44:40,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2105778275, now seen corresponding path program 5 times [2022-12-06 16:44:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240216413] [2022-12-06 16:44:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:41,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240216413] [2022-12-06 16:44:41,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240216413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:41,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:41,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878610666] [2022-12-06 16:44:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:41,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:41,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:41,067 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:41,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 1100 transitions, 10963 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:41,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:41,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:41,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:43,570 INFO L130 PetriNetUnfolder]: 2665/10144 cut-off events. [2022-12-06 16:44:43,570 INFO L131 PetriNetUnfolder]: For 17690/29250 co-relation queries the response was YES. [2022-12-06 16:44:43,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36810 conditions, 10144 events. 2665/10144 cut-off events. For 17690/29250 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 113958 event pairs, 116 based on Foata normal form. 905/10372 useless extension candidates. Maximal degree in co-relation 36204. Up to 1821 conditions per place. [2022-12-06 16:44:43,614 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 347 selfloop transitions, 69 changer transitions 608/1244 dead transitions. [2022-12-06 16:44:43,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1244 transitions, 14753 flow [2022-12-06 16:44:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 16:44:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 16:44:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 12866 transitions. [2022-12-06 16:44:43,626 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.813171533308052 [2022-12-06 16:44:43,626 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 225 predicate places. [2022-12-06 16:44:43,627 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 1244 transitions, 14753 flow [2022-12-06 16:44:43,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:43,628 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:43,628 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:43,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:44:43,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash 827977509, now seen corresponding path program 6 times [2022-12-06 16:44:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:43,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999754651] [2022-12-06 16:44:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:44,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:44,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999754651] [2022-12-06 16:44:44,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999754651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:44,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:44,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713725100] [2022-12-06 16:44:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:44,402 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:44,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1244 transitions, 14753 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:44,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:44,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:44,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:46,642 INFO L130 PetriNetUnfolder]: 2676/10261 cut-off events. [2022-12-06 16:44:46,643 INFO L131 PetriNetUnfolder]: For 24544/37817 co-relation queries the response was YES. [2022-12-06 16:44:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41689 conditions, 10261 events. 2676/10261 cut-off events. For 24544/37817 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 115717 event pairs, 92 based on Foata normal form. 992/10599 useless extension candidates. Maximal degree in co-relation 41027. Up to 1837 conditions per place. [2022-12-06 16:44:46,691 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 357 selfloop transitions, 70 changer transitions 651/1298 dead transitions. [2022-12-06 16:44:46,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1298 transitions, 17668 flow [2022-12-06 16:44:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:44:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:44:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10482 transitions. [2022-12-06 16:44:46,788 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8130623642569035 [2022-12-06 16:44:46,789 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 268 predicate places. [2022-12-06 16:44:46,789 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 1298 transitions, 17668 flow [2022-12-06 16:44:46,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 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) [2022-12-06 16:44:46,790 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:46,790 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:46,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 16:44:46,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2057033381, now seen corresponding path program 1 times [2022-12-06 16:44:46,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:46,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313783161] [2022-12-06 16:44:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:47,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313783161] [2022-12-06 16:44:47,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313783161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:47,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:47,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:44:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797362971] [2022-12-06 16:44:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:44:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:44:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:44:47,508 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:44:47,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1298 transitions, 17668 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:44:47,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:47,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:44:47,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:50,675 INFO L130 PetriNetUnfolder]: 4963/16042 cut-off events. [2022-12-06 16:44:50,675 INFO L131 PetriNetUnfolder]: For 78968/95298 co-relation queries the response was YES. [2022-12-06 16:44:50,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77651 conditions, 16042 events. 4963/16042 cut-off events. For 78968/95298 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 186200 event pairs, 136 based on Foata normal form. 1012/16170 useless extension candidates. Maximal degree in co-relation 76893. Up to 3156 conditions per place. [2022-12-06 16:44:50,750 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 455 selfloop transitions, 96 changer transitions 1264/2051 dead transitions. [2022-12-06 16:44:50,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 2051 transitions, 32877 flow [2022-12-06 16:44:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-06 16:44:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-06 16:44:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 10241 transitions. [2022-12-06 16:44:50,758 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8128422890705611 [2022-12-06 16:44:50,759 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 310 predicate places. [2022-12-06 16:44:50,759 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 2051 transitions, 32877 flow [2022-12-06 16:44:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:44:50,760 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:50,761 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 16:44:50,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1908935789, now seen corresponding path program 1 times [2022-12-06 16:44:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:50,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074478504] [2022-12-06 16:44:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:44:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:44:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:44:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074478504] [2022-12-06 16:44:51,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074478504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:44:51,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:44:51,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-06 16:44:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014691645] [2022-12-06 16:44:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:44:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 16:44:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:44:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 16:44:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-06 16:44:51,052 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 293 [2022-12-06 16:44:51,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 2051 transitions, 32877 flow. Second operand has 11 states, 11 states have (on average 254.9090909090909) internal successors, (2804), 11 states have internal predecessors, (2804), 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) [2022-12-06 16:44:51,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:44:51,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 293 [2022-12-06 16:44:51,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:44:59,487 INFO L130 PetriNetUnfolder]: 15533/46988 cut-off events. [2022-12-06 16:44:59,488 INFO L131 PetriNetUnfolder]: For 226100/246707 co-relation queries the response was YES. [2022-12-06 16:44:59,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211421 conditions, 46988 events. 15533/46988 cut-off events. For 226100/246707 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 621734 event pairs, 1230 based on Foata normal form. 103/43775 useless extension candidates. Maximal degree in co-relation 210457. Up to 7548 conditions per place. [2022-12-06 16:44:59,722 INFO L137 encePairwiseOnDemand]: 270/293 looper letters, 225 selfloop transitions, 109 changer transitions 1469/2528 dead transitions. [2022-12-06 16:44:59,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2528 transitions, 40278 flow [2022-12-06 16:44:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-06 16:44:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-06 16:44:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5829 transitions. [2022-12-06 16:44:59,726 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9042817251008377 [2022-12-06 16:44:59,727 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 331 predicate places. [2022-12-06 16:44:59,727 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 2528 transitions, 40278 flow [2022-12-06 16:44:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 254.9090909090909) internal successors, (2804), 11 states have internal predecessors, (2804), 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) [2022-12-06 16:44:59,728 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:44:59,728 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:44:59,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 16:44:59,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:44:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:44:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash 116302687, now seen corresponding path program 2 times [2022-12-06 16:44:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:44:59,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103094104] [2022-12-06 16:44:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:44:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:44:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:45:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:45:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:45:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103094104] [2022-12-06 16:45:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103094104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:45:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:45:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-06 16:45:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118011190] [2022-12-06 16:45:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:45:00,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 16:45:00,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:45:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 16:45:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-06 16:45:00,069 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 293 [2022-12-06 16:45:00,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 2528 transitions, 40278 flow. Second operand has 11 states, 11 states have (on average 254.9090909090909) internal successors, (2804), 11 states have internal predecessors, (2804), 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) [2022-12-06 16:45:00,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:45:00,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 293 [2022-12-06 16:45:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:45:14,778 INFO L130 PetriNetUnfolder]: 24855/77474 cut-off events. [2022-12-06 16:45:14,778 INFO L131 PetriNetUnfolder]: For 402924/440506 co-relation queries the response was YES. [2022-12-06 16:45:14,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379747 conditions, 77474 events. 24855/77474 cut-off events. For 402924/440506 co-relation queries the response was YES. Maximal size of possible extension queue 2859. Compared 1125624 event pairs, 903 based on Foata normal form. 360/72847 useless extension candidates. Maximal degree in co-relation 378729. Up to 11998 conditions per place. [2022-12-06 16:45:15,374 INFO L137 encePairwiseOnDemand]: 270/293 looper letters, 371 selfloop transitions, 172 changer transitions 1822/3090 dead transitions. [2022-12-06 16:45:15,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 3090 transitions, 52818 flow [2022-12-06 16:45:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 16:45:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-06 16:45:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5276 transitions. [2022-12-06 16:45:15,378 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9003412969283277 [2022-12-06 16:45:15,379 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 350 predicate places. [2022-12-06 16:45:15,380 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 3090 transitions, 52818 flow [2022-12-06 16:45:15,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 254.9090909090909) internal successors, (2804), 11 states have internal predecessors, (2804), 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) [2022-12-06 16:45:15,383 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:45:15,383 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:45:15,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 16:45:15,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:45:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:45:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1043553323, now seen corresponding path program 2 times [2022-12-06 16:45:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:45:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529441426] [2022-12-06 16:45:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:45:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:45:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:45:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:45:16,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:45:16,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529441426] [2022-12-06 16:45:16,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529441426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:45:16,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:45:16,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:45:16,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674785800] [2022-12-06 16:45:16,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:45:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:45:16,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:45:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:45:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:45:16,025 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:45:16,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 3090 transitions, 52818 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:45:16,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:45:16,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:45:16,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:45:33,930 INFO L130 PetriNetUnfolder]: 25129/78460 cut-off events. [2022-12-06 16:45:33,930 INFO L131 PetriNetUnfolder]: For 452206/508604 co-relation queries the response was YES. [2022-12-06 16:45:34,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421946 conditions, 78460 events. 25129/78460 cut-off events. For 452206/508604 co-relation queries the response was YES. Maximal size of possible extension queue 2912. Compared 1142681 event pairs, 879 based on Foata normal form. 3102/76515 useless extension candidates. Maximal degree in co-relation 420855. Up to 12220 conditions per place. [2022-12-06 16:45:34,351 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 677 selfloop transitions, 124 changer transitions 2205/3591 dead transitions. [2022-12-06 16:45:34,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 3591 transitions, 68100 flow [2022-12-06 16:45:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:45:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:45:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10406 transitions. [2022-12-06 16:45:34,358 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8071672354948806 [2022-12-06 16:45:34,359 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 393 predicate places. [2022-12-06 16:45:34,359 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 3591 transitions, 68100 flow [2022-12-06 16:45:34,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:45:34,360 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:45:34,360 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:45:34,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 16:45:34,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:45:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:45:34,361 INFO L85 PathProgramCache]: Analyzing trace with hash -142868531, now seen corresponding path program 3 times [2022-12-06 16:45:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:45:34,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140334795] [2022-12-06 16:45:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:45:34,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:45:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:45:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:45:35,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:45:35,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140334795] [2022-12-06 16:45:35,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140334795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:45:35,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:45:35,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:45:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977192487] [2022-12-06 16:45:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:45:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:45:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:45:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:45:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:45:35,005 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:45:35,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 3591 transitions, 68100 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:45:35,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:45:35,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:45:35,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:45:57,411 INFO L130 PetriNetUnfolder]: 28309/89739 cut-off events. [2022-12-06 16:45:57,411 INFO L131 PetriNetUnfolder]: For 556543/628434 co-relation queries the response was YES. [2022-12-06 16:45:57,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529332 conditions, 89739 events. 28309/89739 cut-off events. For 556543/628434 co-relation queries the response was YES. Maximal size of possible extension queue 3562. Compared 1341397 event pairs, 893 based on Foata normal form. 3449/88056 useless extension candidates. Maximal degree in co-relation 528168. Up to 13781 conditions per place. [2022-12-06 16:45:57,889 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 680 selfloop transitions, 118 changer transitions 2904/4287 dead transitions. [2022-12-06 16:45:57,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 4287 transitions, 91348 flow [2022-12-06 16:45:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 16:45:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 16:45:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6430 transitions. [2022-12-06 16:45:57,892 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8127923144987992 [2022-12-06 16:45:57,892 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 419 predicate places. [2022-12-06 16:45:57,893 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 4287 transitions, 91348 flow [2022-12-06 16:45:57,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:45:57,893 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:45:57,893 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:45:57,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-06 16:45:57,894 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:45:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:45:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash 466571733, now seen corresponding path program 4 times [2022-12-06 16:45:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:45:57,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077138773] [2022-12-06 16:45:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:45:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:45:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:45:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:45:58,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:45:58,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077138773] [2022-12-06 16:45:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077138773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:45:58,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:45:58,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:45:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896958898] [2022-12-06 16:45:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:45:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:45:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:45:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:45:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:45:58,505 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:45:58,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 4287 transitions, 91348 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:45:58,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:45:58,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:45:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:46:26,298 INFO L130 PetriNetUnfolder]: 29096/94887 cut-off events. [2022-12-06 16:46:26,298 INFO L131 PetriNetUnfolder]: For 682025/766537 co-relation queries the response was YES. [2022-12-06 16:46:26,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601142 conditions, 94887 events. 29096/94887 cut-off events. For 682025/766537 co-relation queries the response was YES. Maximal size of possible extension queue 3786. Compared 1445819 event pairs, 819 based on Foata normal form. 4038/93843 useless extension candidates. Maximal degree in co-relation 599905. Up to 14400 conditions per place. [2022-12-06 16:46:26,743 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 546 selfloop transitions, 100 changer transitions 3530/4750 dead transitions. [2022-12-06 16:46:26,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 4750 transitions, 111669 flow [2022-12-06 16:46:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 16:46:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 16:46:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9260 transitions. [2022-12-06 16:46:26,748 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8103614246958957 [2022-12-06 16:46:26,748 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 457 predicate places. [2022-12-06 16:46:26,748 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 4750 transitions, 111669 flow [2022-12-06 16:46:26,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:46:26,749 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:46:26,749 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:46:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-06 16:46:26,749 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:46:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:46:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1822735309, now seen corresponding path program 5 times [2022-12-06 16:46:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:46:26,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676348952] [2022-12-06 16:46:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:46:26,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:46:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:46:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:46:27,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:46:27,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676348952] [2022-12-06 16:46:27,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676348952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:46:27,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:46:27,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:46:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378878038] [2022-12-06 16:46:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:46:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:46:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:46:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:46:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:46:27,310 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:46:27,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 4750 transitions, 111669 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:46:27,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:46:27,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:46:27,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:46:59,537 INFO L130 PetriNetUnfolder]: 30245/98654 cut-off events. [2022-12-06 16:46:59,538 INFO L131 PetriNetUnfolder]: For 830180/930528 co-relation queries the response was YES. [2022-12-06 16:46:59,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679489 conditions, 98654 events. 30245/98654 cut-off events. For 830180/930528 co-relation queries the response was YES. Maximal size of possible extension queue 4028. Compared 1513076 event pairs, 930 based on Foata normal form. 4860/98191 useless extension candidates. Maximal degree in co-relation 529823. Up to 15333 conditions per place. [2022-12-06 16:47:00,042 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 545 selfloop transitions, 90 changer transitions 3896/5105 dead transitions. [2022-12-06 16:47:00,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 5105 transitions, 130278 flow [2022-12-06 16:47:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:47:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:47:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10444 transitions. [2022-12-06 16:47:00,048 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8101147998758921 [2022-12-06 16:47:00,048 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 500 predicate places. [2022-12-06 16:47:00,048 INFO L495 AbstractCegarLoop]: Abstraction has has 779 places, 5105 transitions, 130278 flow [2022-12-06 16:47:00,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:47:00,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:47:00,050 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:47:00,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 16:47:00,050 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:47:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:47:00,050 INFO L85 PathProgramCache]: Analyzing trace with hash -673903425, now seen corresponding path program 6 times [2022-12-06 16:47:00,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:47:00,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731784388] [2022-12-06 16:47:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:47:00,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:47:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:47:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:47:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:47:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731784388] [2022-12-06 16:47:00,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731784388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:47:00,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:47:00,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:47:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63404012] [2022-12-06 16:47:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:47:00,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:47:00,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:47:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:47:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:47:00,604 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:47:00,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 779 places, 5105 transitions, 130278 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:47:00,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:47:00,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:47:00,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:47:37,196 INFO L130 PetriNetUnfolder]: 30218/98479 cut-off events. [2022-12-06 16:47:37,196 INFO L131 PetriNetUnfolder]: For 941558/1053591 co-relation queries the response was YES. [2022-12-06 16:47:37,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725818 conditions, 98479 events. 30218/98479 cut-off events. For 941558/1053591 co-relation queries the response was YES. Maximal size of possible extension queue 4016. Compared 1509025 event pairs, 814 based on Foata normal form. 4991/98220 useless extension candidates. Maximal degree in co-relation 724435. Up to 15270 conditions per place. [2022-12-06 16:47:37,831 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 403 selfloop transitions, 69 changer transitions 4183/5177 dead transitions. [2022-12-06 16:47:37,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 5177 transitions, 141599 flow [2022-12-06 16:47:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:47:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:47:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10482 transitions. [2022-12-06 16:47:37,836 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8130623642569035 [2022-12-06 16:47:37,836 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 543 predicate places. [2022-12-06 16:47:37,836 INFO L495 AbstractCegarLoop]: Abstraction has has 822 places, 5177 transitions, 141599 flow [2022-12-06 16:47:37,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:47:37,837 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:47:37,837 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:47:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 16:47:37,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:47:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:47:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1612901813, now seen corresponding path program 7 times [2022-12-06 16:47:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:47:37,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262467655] [2022-12-06 16:47:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:47:37,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:47:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:47:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:47:38,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:47:38,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262467655] [2022-12-06 16:47:38,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262467655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:47:38,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:47:38,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:47:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183945155] [2022-12-06 16:47:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:47:38,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:47:38,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:47:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:47:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:47:38,446 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:47:38,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 5177 transitions, 141599 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:47:38,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:47:38,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:47:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:48:16,404 INFO L130 PetriNetUnfolder]: 30480/99776 cut-off events. [2022-12-06 16:48:16,404 INFO L131 PetriNetUnfolder]: For 1079891/1204525 co-relation queries the response was YES. [2022-12-06 16:48:16,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782141 conditions, 99776 events. 30480/99776 cut-off events. For 1079891/1204525 co-relation queries the response was YES. Maximal size of possible extension queue 4080. Compared 1534423 event pairs, 837 based on Foata normal form. 4932/99406 useless extension candidates. Maximal degree in co-relation 780685. Up to 15468 conditions per place. [2022-12-06 16:48:16,892 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 402 selfloop transitions, 66 changer transitions 4288/5278 dead transitions. [2022-12-06 16:48:16,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 5278 transitions, 154008 flow [2022-12-06 16:48:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 16:48:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 16:48:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 12807 transitions. [2022-12-06 16:48:16,898 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8094425483503982 [2022-12-06 16:48:16,898 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 596 predicate places. [2022-12-06 16:48:16,898 INFO L495 AbstractCegarLoop]: Abstraction has has 875 places, 5278 transitions, 154008 flow [2022-12-06 16:48:16,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:48:16,899 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:48:16,899 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:48:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-06 16:48:16,899 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:48:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:48:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1799432955, now seen corresponding path program 8 times [2022-12-06 16:48:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:48:16,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956610928] [2022-12-06 16:48:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:48:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:48:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:48:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:48:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:48:17,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956610928] [2022-12-06 16:48:17,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956610928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:48:17,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:48:17,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-06 16:48:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299936055] [2022-12-06 16:48:17,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:48:17,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:48:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:48:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:48:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:48:17,575 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-06 16:48:17,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 5278 transitions, 154008 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:48:17,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:48:17,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-06 16:48:17,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:48:56,562 INFO L130 PetriNetUnfolder]: 30458/99702 cut-off events. [2022-12-06 16:48:56,562 INFO L131 PetriNetUnfolder]: For 1215463/1354649 co-relation queries the response was YES. [2022-12-06 16:48:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829387 conditions, 99702 events. 30458/99702 cut-off events. For 1215463/1354649 co-relation queries the response was YES. Maximal size of possible extension queue 4095. Compared 1532828 event pairs, 777 based on Foata normal form. 4925/99343 useless extension candidates. Maximal degree in co-relation 645542. Up to 15454 conditions per place. [2022-12-06 16:48:57,109 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 347 selfloop transitions, 54 changer transitions 4448/5297 dead transitions. [2022-12-06 16:48:57,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 5297 transitions, 164022 flow [2022-12-06 16:48:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 16:48:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 16:48:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10443 transitions. [2022-12-06 16:48:57,114 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8100372323921812 [2022-12-06 16:48:57,114 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 639 predicate places. [2022-12-06 16:48:57,114 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 5297 transitions, 164022 flow [2022-12-06 16:48:57,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 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) [2022-12-06 16:48:57,115 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:48:57,115 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:48:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-06 16:48:57,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:48:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:48:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash -331589061, now seen corresponding path program 9 times [2022-12-06 16:48:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:48:57,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465479756] [2022-12-06 16:48:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:48:57,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:48:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:48:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:48:58,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:48:58,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465479756] [2022-12-06 16:48:58,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465479756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:48:58,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:48:58,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:48:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728192836] [2022-12-06 16:48:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:48:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:48:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:48:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:48:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:48:58,051 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:48:58,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 5297 transitions, 164022 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:48:58,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:48:58,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:48:58,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:49:37,870 INFO L130 PetriNetUnfolder]: 30456/99622 cut-off events. [2022-12-06 16:49:37,870 INFO L131 PetriNetUnfolder]: For 1352916/1508523 co-relation queries the response was YES. [2022-12-06 16:49:38,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877753 conditions, 99622 events. 30456/99622 cut-off events. For 1352916/1508523 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 1531346 event pairs, 776 based on Foata normal form. 2452/96909 useless extension candidates. Maximal degree in co-relation 683562. Up to 26807 conditions per place. [2022-12-06 16:49:38,354 INFO L137 encePairwiseOnDemand]: 275/293 looper letters, 353 selfloop transitions, 22 changer transitions 4875/5680 dead transitions. [2022-12-06 16:49:38,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 949 places, 5680 transitions, 186599 flow [2022-12-06 16:49:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 16:49:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 16:49:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7563 transitions. [2022-12-06 16:49:38,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8066339590443686 [2022-12-06 16:49:38,357 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 670 predicate places. [2022-12-06 16:49:38,358 INFO L495 AbstractCegarLoop]: Abstraction has has 949 places, 5680 transitions, 186599 flow [2022-12-06 16:49:38,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:49:38,358 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:49:38,358 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:49:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 16:49:38,359 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:49:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:49:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1558075123, now seen corresponding path program 10 times [2022-12-06 16:49:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:49:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622976176] [2022-12-06 16:49:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:49:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:49:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:49:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:49:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:49:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622976176] [2022-12-06 16:49:39,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622976176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:49:39,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:49:39,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:49:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887541112] [2022-12-06 16:49:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:49:39,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:49:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:49:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:49:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:49:39,341 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:49:39,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 5680 transitions, 186599 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:49:39,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:49:39,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:49:39,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:50:24,954 INFO L130 PetriNetUnfolder]: 30446/99762 cut-off events. [2022-12-06 16:50:24,954 INFO L131 PetriNetUnfolder]: For 1474993/1665196 co-relation queries the response was YES. [2022-12-06 16:50:25,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926134 conditions, 99762 events. 30446/99762 cut-off events. For 1474993/1665196 co-relation queries the response was YES. Maximal size of possible extension queue 4099. Compared 1534659 event pairs, 748 based on Foata normal form. 2343/96974 useless extension candidates. Maximal degree in co-relation 924451. Up to 26793 conditions per place. [2022-12-06 16:50:25,426 INFO L137 encePairwiseOnDemand]: 275/293 looper letters, 320 selfloop transitions, 16 changer transitions 5131/5897 dead transitions. [2022-12-06 16:50:25,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 981 places, 5897 transitions, 203372 flow [2022-12-06 16:50:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 16:50:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 16:50:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7830 transitions. [2022-12-06 16:50:25,429 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8098045299410487 [2022-12-06 16:50:25,429 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 702 predicate places. [2022-12-06 16:50:25,430 INFO L495 AbstractCegarLoop]: Abstraction has has 981 places, 5897 transitions, 203372 flow [2022-12-06 16:50:25,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:50:25,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:50:25,430 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:50:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-06 16:50:25,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:50:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:50:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 425363467, now seen corresponding path program 11 times [2022-12-06 16:50:25,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:50:25,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109367654] [2022-12-06 16:50:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:50:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:50:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:50:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:50:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:50:26,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109367654] [2022-12-06 16:50:26,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109367654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:50:26,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:50:26,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:50:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335339027] [2022-12-06 16:50:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:50:26,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:50:26,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:50:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:50:26,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:50:26,431 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:50:26,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 981 places, 5897 transitions, 203372 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:50:26,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:50:26,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:50:26,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:51:15,700 INFO L130 PetriNetUnfolder]: 30436/99361 cut-off events. [2022-12-06 16:51:15,700 INFO L131 PetriNetUnfolder]: For 1624469/1847539 co-relation queries the response was YES. [2022-12-06 16:51:16,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973970 conditions, 99361 events. 30436/99361 cut-off events. For 1624469/1847539 co-relation queries the response was YES. Maximal size of possible extension queue 4072. Compared 1525861 event pairs, 724 based on Foata normal form. 3182/97431 useless extension candidates. Maximal degree in co-relation 972210. Up to 26779 conditions per place. [2022-12-06 16:51:16,209 INFO L137 encePairwiseOnDemand]: 274/293 looper letters, 263 selfloop transitions, 11 changer transitions 5222/5926 dead transitions. [2022-12-06 16:51:16,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 5926 transitions, 215062 flow [2022-12-06 16:51:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 16:51:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 16:51:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 12047 transitions. [2022-12-06 16:51:16,214 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8061968814829686 [2022-12-06 16:51:16,214 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 752 predicate places. [2022-12-06 16:51:16,214 INFO L495 AbstractCegarLoop]: Abstraction has has 1031 places, 5926 transitions, 215062 flow [2022-12-06 16:51:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:51:16,216 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:51:16,216 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:51:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-06 16:51:16,216 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:51:16,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:51:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1644280053, now seen corresponding path program 12 times [2022-12-06 16:51:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:51:16,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507832495] [2022-12-06 16:51:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:51:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:51:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:51:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:51:17,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:51:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507832495] [2022-12-06 16:51:17,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507832495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:51:17,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:51:17,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:51:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409021337] [2022-12-06 16:51:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:51:17,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:51:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:51:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:51:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:51:17,086 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:51:17,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 5926 transitions, 215062 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:51:17,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:51:17,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:51:17,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:52:08,389 INFO L130 PetriNetUnfolder]: 30426/99423 cut-off events. [2022-12-06 16:52:08,389 INFO L131 PetriNetUnfolder]: For 1788582/2031474 co-relation queries the response was YES. [2022-12-06 16:52:08,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021913 conditions, 99423 events. 30426/99423 cut-off events. For 1788582/2031474 co-relation queries the response was YES. Maximal size of possible extension queue 4071. Compared 1526880 event pairs, 663 based on Foata normal form. 6016/100371 useless extension candidates. Maximal degree in co-relation 1020076. Up to 26737 conditions per place. [2022-12-06 16:52:08,861 INFO L137 encePairwiseOnDemand]: 274/293 looper letters, 158 selfloop transitions, 25 changer transitions 5489/6013 dead transitions. [2022-12-06 16:52:08,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1084 places, 6013 transitions, 228796 flow [2022-12-06 16:52:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 16:52:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 16:52:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 12721 transitions. [2022-12-06 16:52:08,867 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8040070787511061 [2022-12-06 16:52:08,867 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 805 predicate places. [2022-12-06 16:52:08,867 INFO L495 AbstractCegarLoop]: Abstraction has has 1084 places, 6013 transitions, 228796 flow [2022-12-06 16:52:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:52:08,868 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:52:08,868 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:52:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-06 16:52:08,868 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:52:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:52:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1187236425, now seen corresponding path program 13 times [2022-12-06 16:52:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:52:08,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560909465] [2022-12-06 16:52:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:52:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:52:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:52:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:52:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:52:09,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560909465] [2022-12-06 16:52:09,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560909465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:52:09,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:52:09,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:52:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804998268] [2022-12-06 16:52:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:52:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:52:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:52:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:52:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:52:09,895 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:52:09,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1084 places, 6013 transitions, 228796 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:52:09,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:52:09,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:52:09,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:53:03,191 INFO L130 PetriNetUnfolder]: 30403/99615 cut-off events. [2022-12-06 16:53:03,192 INFO L131 PetriNetUnfolder]: For 1904176/2091071 co-relation queries the response was YES. [2022-12-06 16:53:03,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069777 conditions, 99615 events. 30403/99615 cut-off events. For 1904176/2091071 co-relation queries the response was YES. Maximal size of possible extension queue 4091. Compared 1531912 event pairs, 606 based on Foata normal form. 3227/97817 useless extension candidates. Maximal degree in co-relation 835007. Up to 26702 conditions per place. [2022-12-06 16:53:03,817 INFO L137 encePairwiseOnDemand]: 275/293 looper letters, 122 selfloop transitions, 11 changer transitions 5621/6095 dead transitions. [2022-12-06 16:53:03,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1115 places, 6095 transitions, 242633 flow [2022-12-06 16:53:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 16:53:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 16:53:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7576 transitions. [2022-12-06 16:53:03,820 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8080204778156996 [2022-12-06 16:53:03,820 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 836 predicate places. [2022-12-06 16:53:03,820 INFO L495 AbstractCegarLoop]: Abstraction has has 1115 places, 6095 transitions, 242633 flow [2022-12-06 16:53:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:53:03,821 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:53:03,821 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:53:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-06 16:53:03,821 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-06 16:53:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:53:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 559247175, now seen corresponding path program 14 times [2022-12-06 16:53:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:53:03,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201838140] [2022-12-06 16:53:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:53:03,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:53:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:53:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:53:04,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:53:04,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201838140] [2022-12-06 16:53:04,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201838140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:53:04,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:53:04,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-06 16:53:04,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020200233] [2022-12-06 16:53:04,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:53:04,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 16:53:04,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:53:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 16:53:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-06 16:53:04,701 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-06 16:53:04,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1115 places, 6095 transitions, 242633 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:53:04,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:53:04,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-06 16:53:04,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:54:01,817 INFO L130 PetriNetUnfolder]: 30392/99523 cut-off events. [2022-12-06 16:54:01,817 INFO L131 PetriNetUnfolder]: For 2048835/2257808 co-relation queries the response was YES. [2022-12-06 16:54:02,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117492 conditions, 99523 events. 30392/99523 cut-off events. For 2048835/2257808 co-relation queries the response was YES. Maximal size of possible extension queue 4080. Compared 1530459 event pairs, 579 based on Foata normal form. 3857/98396 useless extension candidates. Maximal degree in co-relation 872766. Up to 26667 conditions per place. [2022-12-06 16:54:02,483 INFO L137 encePairwiseOnDemand]: 274/293 looper letters, 0 selfloop transitions, 0 changer transitions 6138/6138 dead transitions. [2022-12-06 16:54:02,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1163 places, 6138 transitions, 255656 flow [2022-12-06 16:54:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 16:54:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 16:54:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 12060 transitions. [2022-12-06 16:54:02,488 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8070668540453724 [2022-12-06 16:54:02,489 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 884 predicate places. [2022-12-06 16:54:02,489 INFO L495 AbstractCegarLoop]: Abstraction has has 1163 places, 6138 transitions, 255656 flow [2022-12-06 16:54:02,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 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) [2022-12-06 16:54:02,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-06 16:54:02,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 16:54:02,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-06 16:54:02,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-06 16:54:02,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-06 16:54:02,492 INFO L458 BasicCegarLoop]: Path program histogram: [14, 6, 2, 1] [2022-12-06 16:54:02,495 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:54:02,495 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:54:02,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:54:02 BasicIcfg [2022-12-06 16:54:02,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:54:02,498 INFO L158 Benchmark]: Toolchain (without parser) took 578940.99ms. Allocated memory was 202.4MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 168.7MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 6.5GB. Max. memory is 8.0GB. [2022-12-06 16:54:02,498 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 179.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:54:02,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3738.95ms. Allocated memory was 202.4MB in the beginning and 280.0MB in the end (delta: 77.6MB). Free memory was 168.2MB in the beginning and 156.1MB in the end (delta: 12.1MB). Peak memory consumption was 118.0MB. Max. memory is 8.0GB. [2022-12-06 16:54:02,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.01ms. Allocated memory is still 280.0MB. Free memory was 155.6MB in the beginning and 146.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-12-06 16:54:02,499 INFO L158 Benchmark]: Boogie Preprocessor took 52.15ms. Allocated memory is still 280.0MB. Free memory was 146.7MB in the beginning and 143.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-12-06 16:54:02,499 INFO L158 Benchmark]: RCFGBuilder took 856.76ms. Allocated memory was 280.0MB in the beginning and 375.4MB in the end (delta: 95.4MB). Free memory was 142.5MB in the beginning and 311.5MB in the end (delta: -169.1MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. [2022-12-06 16:54:02,499 INFO L158 Benchmark]: TraceAbstraction took 574161.70ms. Allocated memory was 375.4MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 311.0MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 6.5GB. Max. memory is 8.0GB. [2022-12-06 16:54:02,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 179.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 3738.95ms. Allocated memory was 202.4MB in the beginning and 280.0MB in the end (delta: 77.6MB). Free memory was 168.2MB in the beginning and 156.1MB in the end (delta: 12.1MB). Peak memory consumption was 118.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 127.01ms. Allocated memory is still 280.0MB. Free memory was 155.6MB in the beginning and 146.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.15ms. Allocated memory is still 280.0MB. Free memory was 146.7MB in the beginning and 143.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 856.76ms. Allocated memory was 280.0MB in the beginning and 375.4MB in the end (delta: 95.4MB). Free memory was 142.5MB in the beginning and 311.5MB in the end (delta: -169.1MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. * TraceAbstraction took 574161.70ms. Allocated memory was 375.4MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 311.0MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 6.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 370 locations, 4 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: 574.0s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 556.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7455 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7455 mSDsluCounter, 15483 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13289 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19982 IncrementalHoareTripleChecker+Invalid, 20122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 2194 mSDtfsCounter, 19982 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1142 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1094 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12521 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255656occurred in iteration=23, InterpolantAutomatonStates: 910, 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, 0.7s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 4938 NumberOfCodeBlocks, 4938 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 4915 ConstructedInterpolants, 0 QuantifiedInterpolants, 25548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 16:54:02,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...