/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:43:14,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:43:14,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:43:14,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:43:14,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:43:14,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:43:14,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:43:14,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:43:14,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:43:14,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:43:14,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:43:14,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:43:14,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:43:14,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:43:14,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:43:14,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:43:14,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:43:14,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:43:14,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:43:14,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:43:14,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:43:14,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:43:14,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:43:14,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:43:14,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:43:14,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:43:14,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:43:14,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:43:14,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:43:14,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:43:14,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:43:14,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:43:14,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:43:14,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:43:14,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:43:14,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:43:14,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:43:14,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:43:14,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:43:14,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:43:14,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:43:14,876 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 [2022-12-05 18:43:14,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:43:14,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:43:14,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:43:14,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:43:14,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:43:14,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:43:14,909 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:43:14,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:43:14,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:43:14,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:43:14,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:43:14,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:43:14,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:43:14,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:43:14,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:43:14,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:43:14,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:43:14,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:43:14,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:43:14,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:43:14,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:43:15,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:43:15,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:43:15,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:43:15,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:43:15,239 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:43:15,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2022-12-05 18:43:16,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:43:16,701 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:43:16,701 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2022-12-05 18:43:16,745 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a23edf6d/b520f4b3f0ad4c2fb0a5798ce78a61e5/FLAG4e3d4f5d0 [2022-12-05 18:43:16,759 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a23edf6d/b520f4b3f0ad4c2fb0a5798ce78a61e5 [2022-12-05 18:43:16,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:43:16,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:43:16,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:43:16,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:43:16,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:43:16,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:43:16" (1/1) ... [2022-12-05 18:43:16,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1663ee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:16, skipping insertion in model container [2022-12-05 18:43:16,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:43:16" (1/1) ... [2022-12-05 18:43:16,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:43:16,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:43:17,211 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_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2022-12-05 18:43:17,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,609 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-05 18:43:17,615 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:17,619 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:17,625 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:17,697 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:43:17,702 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:43:17,786 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-05 18:43:17,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:17,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:17,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:18,017 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-05 18:43:18,020 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-05 18:43:18,022 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-05 18:43:18,087 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-05 18:43:18,087 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:43:18,089 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-05 18:43:18,090 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:43:18,222 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-05 18:43:18,522 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:43:18,535 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:43:18,607 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-05 18:43:18,611 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-05 18:43:18,782 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-05 18:43:18,964 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-05 18:43:18,972 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-05 18:43:19,141 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-05 18:43:19,266 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-05 18:43:19,267 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-05 18:43:19,267 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-05 18:43:20,178 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-05 18:43:20,179 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,201 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,205 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,208 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,652 WARN L1573 CHandler]: Possible shadowing of function iminor [2022-12-05 18:43:20,653 WARN L1573 CHandler]: Possible shadowing of function iminor [2022-12-05 18:43:20,674 WARN L623 FunctionHandler]: Unknown extern function platform_device_alloc [2022-12-05 18:43:20,674 WARN L623 FunctionHandler]: Unknown extern function platform_device_add [2022-12-05 18:43:20,676 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-05 18:43:20,677 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-05 18:43:20,677 WARN L623 FunctionHandler]: Unknown extern function platform_device_del [2022-12-05 18:43:20,678 WARN L623 FunctionHandler]: Unknown extern function platform_device_put [2022-12-05 18:43:20,681 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-05 18:43:20,682 WARN L623 FunctionHandler]: Unknown extern function platform_device_unregister [2022-12-05 18:43:20,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:43:20,719 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:43:20,732 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_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2022-12-05 18:43:20,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,743 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-05 18:43:20,743 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:20,744 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:20,744 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:43:20,748 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:43:20,749 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:43:20,752 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-05 18:43:20,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:43:20,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:43:20,774 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-05 18:43:20,774 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-05 18:43:20,774 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-05 18:43:20,778 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-05 18:43:20,779 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:43:20,779 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-05 18:43:20,779 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:43:20,788 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-05 18:43:20,802 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:43:20,804 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:43:20,806 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-05 18:43:20,806 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-05 18:43:20,815 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-05 18:43:20,819 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-05 18:43:20,820 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-05 18:43:20,824 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-05 18:43:20,829 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-05 18:43:20,829 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-05 18:43:20,830 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-05 18:43:20,902 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-05 18:43:20,903 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,906 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,914 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,917 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:43:20,958 WARN L1573 CHandler]: Possible shadowing of function iminor [2022-12-05 18:43:20,959 WARN L1573 CHandler]: Possible shadowing of function iminor [2022-12-05 18:43:20,964 WARN L623 FunctionHandler]: Unknown extern function platform_device_alloc [2022-12-05 18:43:20,965 WARN L623 FunctionHandler]: Unknown extern function platform_device_add [2022-12-05 18:43:20,966 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-05 18:43:20,967 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-05 18:43:20,967 WARN L623 FunctionHandler]: Unknown extern function platform_device_del [2022-12-05 18:43:20,967 WARN L623 FunctionHandler]: Unknown extern function platform_device_put [2022-12-05 18:43:20,968 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-05 18:43:20,968 WARN L623 FunctionHandler]: Unknown extern function platform_device_unregister [2022-12-05 18:43:20,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:43:21,603 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:43:21,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21 WrapperNode [2022-12-05 18:43:21,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:43:21,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:43:21,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:43:21,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:43:21,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,819 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 75, statements flattened = 867 [2022-12-05 18:43:21,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:43:21,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:43:21,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:43:21,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:43:21,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:43:21,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:43:21,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:43:21,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:43:21,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (1/1) ... [2022-12-05 18:43:21,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:43:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:21,945 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) [2022-12-05 18:43:21,967 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 [2022-12-05 18:43:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:43:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:43:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:43:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2022-12-05 18:43:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:43:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_configure [2022-12-05 18:43:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_configure [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:43:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:43:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:43:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-05 18:43:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:43:21,997 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:43:22,506 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:43:22,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:43:23,387 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:43:23,426 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:43:23,426 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2022-12-05 18:43:23,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:43:23 BoogieIcfgContainer [2022-12-05 18:43:23,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:43:23,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:43:23,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:43:23,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:43:23,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:43:16" (1/3) ... [2022-12-05 18:43:23,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d52f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:43:23, skipping insertion in model container [2022-12-05 18:43:23,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:43:21" (2/3) ... [2022-12-05 18:43:23,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d52f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:43:23, skipping insertion in model container [2022-12-05 18:43:23,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:43:23" (3/3) ... [2022-12-05 18:43:23,437 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2022-12-05 18:43:23,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:43:23,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-05 18:43:23,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:43:23,624 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 18:43:23,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 896 places, 963 transitions, 1942 flow [2022-12-05 18:43:23,973 INFO L130 PetriNetUnfolder]: 74/961 cut-off events. [2022-12-05 18:43:23,974 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:43:23,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 961 events. 74/961 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1929 event pairs, 0 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 759. Up to 9 conditions per place. [2022-12-05 18:43:23,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 896 places, 963 transitions, 1942 flow [2022-12-05 18:43:24,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 886 places, 953 transitions, 1915 flow [2022-12-05 18:43:24,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:43:24,024 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;@6382f7ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:43:24,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-05 18:43:24,100 INFO L130 PetriNetUnfolder]: 13/379 cut-off events. [2022-12-05 18:43:24,100 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:43:24,100 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:24,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:24,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash -363387003, now seen corresponding path program 1 times [2022-12-05 18:43:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:24,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721363886] [2022-12-05 18:43:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:25,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721363886] [2022-12-05 18:43:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721363886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:25,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-05 18:43:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987278930] [2022-12-05 18:43:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 18:43:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 18:43:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-05 18:43:25,196 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 963 [2022-12-05 18:43:25,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 953 transitions, 1915 flow. Second operand has 9 states, 9 states have (on average 896.1111111111111) internal successors, (8065), 9 states have internal predecessors, (8065), 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) [2022-12-05 18:43:25,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:25,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 963 [2022-12-05 18:43:25,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:25,667 INFO L130 PetriNetUnfolder]: 62/1101 cut-off events. [2022-12-05 18:43:25,667 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-12-05 18:43:25,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 1101 events. 62/1101 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2828 event pairs, 1 based on Foata normal form. 28/1061 useless extension candidates. Maximal degree in co-relation 766. Up to 15 conditions per place. [2022-12-05 18:43:25,682 INFO L137 encePairwiseOnDemand]: 917/963 looper letters, 19 selfloop transitions, 16 changer transitions 1/917 dead transitions. [2022-12-05 18:43:25,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 917 transitions, 1913 flow [2022-12-05 18:43:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 18:43:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 18:43:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 14369 transitions. [2022-12-05 18:43:25,728 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.932567497403946 [2022-12-05 18:43:25,730 INFO L175 Difference]: Start difference. First operand has 886 places, 953 transitions, 1915 flow. Second operand 16 states and 14369 transitions. [2022-12-05 18:43:25,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 917 transitions, 1913 flow [2022-12-05 18:43:25,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 917 transitions, 1908 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 18:43:25,756 INFO L231 Difference]: Finished difference. Result has 892 places, 916 transitions, 1868 flow [2022-12-05 18:43:25,759 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1868, PETRI_PLACES=892, PETRI_TRANSITIONS=916} [2022-12-05 18:43:25,765 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 6 predicate places. [2022-12-05 18:43:25,765 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 916 transitions, 1868 flow [2022-12-05 18:43:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 896.1111111111111) internal successors, (8065), 9 states have internal predecessors, (8065), 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) [2022-12-05 18:43:25,770 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:25,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:25,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:43:25,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1858368299, now seen corresponding path program 1 times [2022-12-05 18:43:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935372217] [2022-12-05 18:43:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935372217] [2022-12-05 18:43:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935372217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:26,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:26,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:43:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278808124] [2022-12-05 18:43:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:26,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:43:26,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:43:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:43:26,623 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 885 out of 963 [2022-12-05 18:43:26,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 916 transitions, 1868 flow. Second operand has 6 states, 6 states have (on average 889.6666666666666) internal successors, (5338), 6 states have internal predecessors, (5338), 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) [2022-12-05 18:43:26,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:26,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 885 of 963 [2022-12-05 18:43:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:27,228 INFO L130 PetriNetUnfolder]: 158/2158 cut-off events. [2022-12-05 18:43:27,228 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 18:43:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 2158 events. 158/2158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 9109 event pairs, 14 based on Foata normal form. 0/1991 useless extension candidates. Maximal degree in co-relation 1814. Up to 48 conditions per place. [2022-12-05 18:43:27,249 INFO L137 encePairwiseOnDemand]: 953/963 looper letters, 50 selfloop transitions, 9 changer transitions 0/930 dead transitions. [2022-12-05 18:43:27,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 930 transitions, 2018 flow [2022-12-05 18:43:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:43:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:43:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7140 transitions. [2022-12-05 18:43:27,268 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.926791277258567 [2022-12-05 18:43:27,268 INFO L175 Difference]: Start difference. First operand has 892 places, 916 transitions, 1868 flow. Second operand 8 states and 7140 transitions. [2022-12-05 18:43:27,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 930 transitions, 2018 flow [2022-12-05 18:43:27,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 930 transitions, 1986 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-12-05 18:43:27,289 INFO L231 Difference]: Finished difference. Result has 882 places, 918 transitions, 1871 flow [2022-12-05 18:43:27,290 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=874, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=905, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1871, PETRI_PLACES=882, PETRI_TRANSITIONS=918} [2022-12-05 18:43:27,291 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, -4 predicate places. [2022-12-05 18:43:27,291 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 918 transitions, 1871 flow [2022-12-05 18:43:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 889.6666666666666) internal successors, (5338), 6 states have internal predecessors, (5338), 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) [2022-12-05 18:43:27,295 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:27,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:43:27,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1289087035, now seen corresponding path program 1 times [2022-12-05 18:43:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:27,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195875133] [2022-12-05 18:43:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:27,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195875133] [2022-12-05 18:43:27,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195875133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:27,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:27,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:43:27,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437680477] [2022-12-05 18:43:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:27,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:43:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:43:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:43:27,842 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 906 out of 963 [2022-12-05 18:43:27,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 918 transitions, 1871 flow. Second operand has 5 states, 5 states have (on average 907.6) internal successors, (4538), 5 states have internal predecessors, (4538), 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) [2022-12-05 18:43:27,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:27,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 906 of 963 [2022-12-05 18:43:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:28,395 INFO L130 PetriNetUnfolder]: 156/2340 cut-off events. [2022-12-05 18:43:28,395 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-12-05 18:43:28,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 2340 events. 156/2340 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 9027 event pairs, 3 based on Foata normal form. 0/2170 useless extension candidates. Maximal degree in co-relation 865. Up to 20 conditions per place. [2022-12-05 18:43:28,417 INFO L137 encePairwiseOnDemand]: 956/963 looper letters, 27 selfloop transitions, 6 changer transitions 0/926 dead transitions. [2022-12-05 18:43:28,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 926 transitions, 1957 flow [2022-12-05 18:43:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:43:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:43:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5469 transitions. [2022-12-05 18:43:28,428 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.946521287642783 [2022-12-05 18:43:28,428 INFO L175 Difference]: Start difference. First operand has 882 places, 918 transitions, 1871 flow. Second operand 6 states and 5469 transitions. [2022-12-05 18:43:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 926 transitions, 1957 flow [2022-12-05 18:43:28,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 882 places, 926 transitions, 1948 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 18:43:28,443 INFO L231 Difference]: Finished difference. Result has 883 places, 919 transitions, 1882 flow [2022-12-05 18:43:28,445 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1882, PETRI_PLACES=883, PETRI_TRANSITIONS=919} [2022-12-05 18:43:28,446 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, -3 predicate places. [2022-12-05 18:43:28,446 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 919 transitions, 1882 flow [2022-12-05 18:43:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 907.6) internal successors, (4538), 5 states have internal predecessors, (4538), 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) [2022-12-05 18:43:28,449 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:28,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:43:28,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2025320207, now seen corresponding path program 1 times [2022-12-05 18:43:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:28,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736950406] [2022-12-05 18:43:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:28,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:29,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736950406] [2022-12-05 18:43:29,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736950406] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:43:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173513548] [2022-12-05 18:43:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:29,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:29,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:29,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:43:29,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 18:43:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:29,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 18:43:29,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:43:29,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 18:43:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 18:43:29,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:43:29,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173513548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:29,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:43:29,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-12-05 18:43:29,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231175968] [2022-12-05 18:43:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:29,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:43:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:43:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-05 18:43:29,708 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 963 [2022-12-05 18:43:29,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 919 transitions, 1882 flow. Second operand has 7 states, 7 states have (on average 868.2857142857143) internal successors, (6078), 7 states have internal predecessors, (6078), 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) [2022-12-05 18:43:29,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:29,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 963 [2022-12-05 18:43:29,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:33,135 INFO L130 PetriNetUnfolder]: 2247/13470 cut-off events. [2022-12-05 18:43:33,135 INFO L131 PetriNetUnfolder]: For 176/215 co-relation queries the response was YES. [2022-12-05 18:43:33,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16196 conditions, 13470 events. 2247/13470 cut-off events. For 176/215 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 127593 event pairs, 429 based on Foata normal form. 0/12161 useless extension candidates. Maximal degree in co-relation 15971. Up to 1233 conditions per place. [2022-12-05 18:43:33,299 INFO L137 encePairwiseOnDemand]: 950/963 looper letters, 135 selfloop transitions, 27 changer transitions 0/1010 dead transitions. [2022-12-05 18:43:33,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 1010 transitions, 2400 flow [2022-12-05 18:43:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-05 18:43:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-05 18:43:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 12242 transitions. [2022-12-05 18:43:33,322 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.908025515502151 [2022-12-05 18:43:33,322 INFO L175 Difference]: Start difference. First operand has 883 places, 919 transitions, 1882 flow. Second operand 14 states and 12242 transitions. [2022-12-05 18:43:33,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 1010 transitions, 2400 flow [2022-12-05 18:43:33,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 1010 transitions, 2390 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 18:43:33,339 INFO L231 Difference]: Finished difference. Result has 900 places, 952 transitions, 2063 flow [2022-12-05 18:43:33,341 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2063, PETRI_PLACES=900, PETRI_TRANSITIONS=952} [2022-12-05 18:43:33,342 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 14 predicate places. [2022-12-05 18:43:33,342 INFO L495 AbstractCegarLoop]: Abstraction has has 900 places, 952 transitions, 2063 flow [2022-12-05 18:43:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 868.2857142857143) internal successors, (6078), 7 states have internal predecessors, (6078), 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) [2022-12-05 18:43:33,346 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:33,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:33,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 18:43:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:33,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1169067245, now seen corresponding path program 1 times [2022-12-05 18:43:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112495796] [2022-12-05 18:43:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112495796] [2022-12-05 18:43:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112495796] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:43:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035809264] [2022-12-05 18:43:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:34,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:34,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:43:34,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 18:43:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:34,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-05 18:43:34,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:43:35,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 18:43:35,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-05 18:43:35,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 18:43:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 18:43:35,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:43:35,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035809264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:35,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:43:35,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2022-12-05 18:43:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494422816] [2022-12-05 18:43:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 18:43:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 18:43:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:43:35,577 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 858 out of 963 [2022-12-05 18:43:35,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 952 transitions, 2063 flow. Second operand has 12 states, 12 states have (on average 861.5) internal successors, (10338), 12 states have internal predecessors, (10338), 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) [2022-12-05 18:43:35,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:35,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 858 of 963 [2022-12-05 18:43:35,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:40,653 INFO L130 PetriNetUnfolder]: 3100/19178 cut-off events. [2022-12-05 18:43:40,653 INFO L131 PetriNetUnfolder]: For 989/1021 co-relation queries the response was YES. [2022-12-05 18:43:40,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23986 conditions, 19178 events. 3100/19178 cut-off events. For 989/1021 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 196493 event pairs, 90 based on Foata normal form. 32/17708 useless extension candidates. Maximal degree in co-relation 23755. Up to 724 conditions per place. [2022-12-05 18:43:40,786 INFO L137 encePairwiseOnDemand]: 947/963 looper letters, 218 selfloop transitions, 88 changer transitions 0/1149 dead transitions. [2022-12-05 18:43:40,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1149 transitions, 3208 flow [2022-12-05 18:43:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-05 18:43:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-05 18:43:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 31164 transitions. [2022-12-05 18:43:40,836 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8989269643475251 [2022-12-05 18:43:40,836 INFO L175 Difference]: Start difference. First operand has 900 places, 952 transitions, 2063 flow. Second operand 36 states and 31164 transitions. [2022-12-05 18:43:40,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1149 transitions, 3208 flow [2022-12-05 18:43:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1149 transitions, 3208 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:43:40,870 INFO L231 Difference]: Finished difference. Result has 943 places, 1015 transitions, 2577 flow [2022-12-05 18:43:40,871 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=952, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=914, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2577, PETRI_PLACES=943, PETRI_TRANSITIONS=1015} [2022-12-05 18:43:40,873 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 57 predicate places. [2022-12-05 18:43:40,873 INFO L495 AbstractCegarLoop]: Abstraction has has 943 places, 1015 transitions, 2577 flow [2022-12-05 18:43:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 861.5) internal successors, (10338), 12 states have internal predecessors, (10338), 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) [2022-12-05 18:43:40,890 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:40,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:40,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 18:43:41,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:41,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1204473059, now seen corresponding path program 1 times [2022-12-05 18:43:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:41,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46132730] [2022-12-05 18:43:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:41,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46132730] [2022-12-05 18:43:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46132730] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:43:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889996661] [2022-12-05 18:43:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:41,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:43:41,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 18:43:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:42,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 18:43:42,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:43:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:42,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:43:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:42,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889996661] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:43:42,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:43:42,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2022-12-05 18:43:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293420705] [2022-12-05 18:43:42,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:43:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 18:43:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 18:43:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-05 18:43:42,564 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 906 out of 963 [2022-12-05 18:43:42,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 1015 transitions, 2577 flow. Second operand has 12 states, 12 states have (on average 908.0) internal successors, (10896), 12 states have internal predecessors, (10896), 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) [2022-12-05 18:43:42,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:42,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 906 of 963 [2022-12-05 18:43:42,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:44,628 INFO L130 PetriNetUnfolder]: 716/7763 cut-off events. [2022-12-05 18:43:44,629 INFO L131 PetriNetUnfolder]: For 805/897 co-relation queries the response was YES. [2022-12-05 18:43:44,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8979 conditions, 7763 events. 716/7763 cut-off events. For 805/897 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 58471 event pairs, 3 based on Foata normal form. 26/7228 useless extension candidates. Maximal degree in co-relation 8783. Up to 103 conditions per place. [2022-12-05 18:43:44,686 INFO L137 encePairwiseOnDemand]: 950/963 looper letters, 47 selfloop transitions, 18 changer transitions 0/1045 dead transitions. [2022-12-05 18:43:44,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 1045 transitions, 2802 flow [2022-12-05 18:43:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 18:43:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 18:43:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 13641 transitions. [2022-12-05 18:43:44,704 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9443406022845275 [2022-12-05 18:43:44,705 INFO L175 Difference]: Start difference. First operand has 943 places, 1015 transitions, 2577 flow. Second operand 15 states and 13641 transitions. [2022-12-05 18:43:44,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 1045 transitions, 2802 flow [2022-12-05 18:43:44,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1045 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:43:44,737 INFO L231 Difference]: Finished difference. Result has 958 places, 1022 transitions, 2649 flow [2022-12-05 18:43:44,739 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2649, PETRI_PLACES=958, PETRI_TRANSITIONS=1022} [2022-12-05 18:43:44,741 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 72 predicate places. [2022-12-05 18:43:44,742 INFO L495 AbstractCegarLoop]: Abstraction has has 958 places, 1022 transitions, 2649 flow [2022-12-05 18:43:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 908.0) internal successors, (10896), 12 states have internal predecessors, (10896), 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) [2022-12-05 18:43:44,745 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:44,745 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:44,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 18:43:44,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:44,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1474275859, now seen corresponding path program 2 times [2022-12-05 18:43:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348958907] [2022-12-05 18:43:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:45,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348958907] [2022-12-05 18:43:45,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348958907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:43:45,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35279480] [2022-12-05 18:43:45,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:43:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:45,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:43:45,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 18:43:46,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 18:43:46,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:43:46,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-05 18:43:46,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:43:46,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-05 18:43:46,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 18:43:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-05 18:43:46,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:43:46,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35279480] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:46,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:43:46,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-12-05 18:43:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438516900] [2022-12-05 18:43:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:46,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 18:43:46,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 18:43:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:43:46,684 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 845 out of 963 [2022-12-05 18:43:46,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 958 places, 1022 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 850.4545454545455) internal successors, (9355), 11 states have internal predecessors, (9355), 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) [2022-12-05 18:43:46,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:46,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 845 of 963 [2022-12-05 18:43:46,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:58,228 INFO L130 PetriNetUnfolder]: 8670/47589 cut-off events. [2022-12-05 18:43:58,228 INFO L131 PetriNetUnfolder]: For 16396/34642 co-relation queries the response was YES. [2022-12-05 18:43:58,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67044 conditions, 47589 events. 8670/47589 cut-off events. For 16396/34642 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 583410 event pairs, 2115 based on Foata normal form. 975/44284 useless extension candidates. Maximal degree in co-relation 66765. Up to 5141 conditions per place. [2022-12-05 18:43:58,606 INFO L137 encePairwiseOnDemand]: 946/963 looper letters, 216 selfloop transitions, 35 changer transitions 135/1253 dead transitions. [2022-12-05 18:43:58,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 1253 transitions, 4402 flow [2022-12-05 18:43:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:43:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:43:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 25624 transitions. [2022-12-05 18:43:58,631 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8869505019037729 [2022-12-05 18:43:58,631 INFO L175 Difference]: Start difference. First operand has 958 places, 1022 transitions, 2649 flow. Second operand 30 states and 25624 transitions. [2022-12-05 18:43:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 987 places, 1253 transitions, 4402 flow [2022-12-05 18:43:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 980 places, 1253 transitions, 4381 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-12-05 18:43:58,740 INFO L231 Difference]: Finished difference. Result has 1004 places, 1037 transitions, 2908 flow [2022-12-05 18:43:58,741 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=951, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2908, PETRI_PLACES=1004, PETRI_TRANSITIONS=1037} [2022-12-05 18:43:58,741 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 118 predicate places. [2022-12-05 18:43:58,742 INFO L495 AbstractCegarLoop]: Abstraction has has 1004 places, 1037 transitions, 2908 flow [2022-12-05 18:43:58,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 850.4545454545455) internal successors, (9355), 11 states have internal predecessors, (9355), 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) [2022-12-05 18:43:58,745 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:58,746 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:58,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-05 18:43:58,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:58,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:43:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1293049813, now seen corresponding path program 1 times [2022-12-05 18:43:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:58,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663668182] [2022-12-05 18:43:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:58,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:43:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:59,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663668182] [2022-12-05 18:43:59,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663668182] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:43:59,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342394417] [2022-12-05 18:43:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:59,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:43:59,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:43:59,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:43:59,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 18:44:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:00,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-05 18:44:00,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:44:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:00,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:44:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:01,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342394417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:44:01,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:44:01,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-12-05 18:44:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95854603] [2022-12-05 18:44:01,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:44:01,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-05 18:44:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-05 18:44:01,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-12-05 18:44:01,068 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 906 out of 963 [2022-12-05 18:44:01,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1004 places, 1037 transitions, 2908 flow. Second operand has 21 states, 21 states have (on average 908.9047619047619) internal successors, (19087), 21 states have internal predecessors, (19087), 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) [2022-12-05 18:44:01,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:01,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 906 of 963 [2022-12-05 18:44:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:04,953 INFO L130 PetriNetUnfolder]: 899/10297 cut-off events. [2022-12-05 18:44:04,954 INFO L131 PetriNetUnfolder]: For 3854/4129 co-relation queries the response was YES. [2022-12-05 18:44:05,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13268 conditions, 10297 events. 899/10297 cut-off events. For 3854/4129 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 82202 event pairs, 10 based on Foata normal form. 27/9554 useless extension candidates. Maximal degree in co-relation 13100. Up to 136 conditions per place. [2022-12-05 18:44:05,086 INFO L137 encePairwiseOnDemand]: 950/963 looper letters, 76 selfloop transitions, 24 changer transitions 0/1093 dead transitions. [2022-12-05 18:44:05,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1014 places, 1093 transitions, 3334 flow [2022-12-05 18:44:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-05 18:44:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-05 18:44:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 20024 transitions. [2022-12-05 18:44:05,104 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9451524591711508 [2022-12-05 18:44:05,104 INFO L175 Difference]: Start difference. First operand has 1004 places, 1037 transitions, 2908 flow. Second operand 22 states and 20024 transitions. [2022-12-05 18:44:05,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1014 places, 1093 transitions, 3334 flow [2022-12-05 18:44:05,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1002 places, 1093 transitions, 3252 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-12-05 18:44:05,383 INFO L231 Difference]: Finished difference. Result has 1013 places, 1045 transitions, 2972 flow [2022-12-05 18:44:05,385 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=981, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2972, PETRI_PLACES=1013, PETRI_TRANSITIONS=1045} [2022-12-05 18:44:05,387 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 127 predicate places. [2022-12-05 18:44:05,387 INFO L495 AbstractCegarLoop]: Abstraction has has 1013 places, 1045 transitions, 2972 flow [2022-12-05 18:44:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 908.9047619047619) internal successors, (19087), 21 states have internal predecessors, (19087), 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) [2022-12-05 18:44:05,392 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:05,392 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:05,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 18:44:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:44:05,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:44:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 930115, now seen corresponding path program 1 times [2022-12-05 18:44:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649427940] [2022-12-05 18:44:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-12-05 18:44:05,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:05,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649427940] [2022-12-05 18:44:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649427940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:05,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:05,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:44:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589549610] [2022-12-05 18:44:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:05,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:44:05,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:44:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:44:05,802 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 919 out of 963 [2022-12-05 18:44:05,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1013 places, 1045 transitions, 2972 flow. Second operand has 3 states, 3 states have (on average 921.6666666666666) internal successors, (2765), 3 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:05,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:05,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 919 of 963 [2022-12-05 18:44:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:09,975 INFO L130 PetriNetUnfolder]: 1524/16671 cut-off events. [2022-12-05 18:44:09,975 INFO L131 PetriNetUnfolder]: For 5700/6210 co-relation queries the response was YES. [2022-12-05 18:44:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21715 conditions, 16671 events. 1524/16671 cut-off events. For 5700/6210 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 159133 event pairs, 111 based on Foata normal form. 24/15360 useless extension candidates. Maximal degree in co-relation 21492. Up to 595 conditions per place. [2022-12-05 18:44:10,131 INFO L137 encePairwiseOnDemand]: 961/963 looper letters, 24 selfloop transitions, 1 changer transitions 0/1050 dead transitions. [2022-12-05 18:44:10,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1015 places, 1050 transitions, 3048 flow [2022-12-05 18:44:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:44:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:44:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2772 transitions. [2022-12-05 18:44:10,136 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9595015576323987 [2022-12-05 18:44:10,136 INFO L175 Difference]: Start difference. First operand has 1013 places, 1045 transitions, 2972 flow. Second operand 3 states and 2772 transitions. [2022-12-05 18:44:10,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1015 places, 1050 transitions, 3048 flow [2022-12-05 18:44:10,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1007 places, 1050 transitions, 3033 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 18:44:10,188 INFO L231 Difference]: Finished difference. Result has 1008 places, 1045 transitions, 2962 flow [2022-12-05 18:44:10,189 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=1005, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1044, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2962, PETRI_PLACES=1008, PETRI_TRANSITIONS=1045} [2022-12-05 18:44:10,190 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 122 predicate places. [2022-12-05 18:44:10,190 INFO L495 AbstractCegarLoop]: Abstraction has has 1008 places, 1045 transitions, 2962 flow [2022-12-05 18:44:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 921.6666666666666) internal successors, (2765), 3 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:44:10,192 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:10,192 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:10,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 18:44:10,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:44:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -786662045, now seen corresponding path program 2 times [2022-12-05 18:44:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858840657] [2022-12-05 18:44:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:11,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:11,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858840657] [2022-12-05 18:44:11,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858840657] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:44:11,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966998533] [2022-12-05 18:44:11,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:44:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:44:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:44:11,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:44:11,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 18:44:11,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 18:44:11,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:44:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-05 18:44:11,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:44:13,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-05 18:44:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 18:44:13,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-05 18:44:13,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 18:44:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-12-05 18:44:13,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:44:13,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966998533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:13,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:44:13,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 29 [2022-12-05 18:44:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287834015] [2022-12-05 18:44:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 18:44:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 18:44:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=738, Unknown=0, NotChecked=0, Total=812 [2022-12-05 18:44:13,545 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 840 out of 963 [2022-12-05 18:44:13,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1008 places, 1045 transitions, 2962 flow. Second operand has 16 states, 16 states have (on average 844.0625) internal successors, (13505), 16 states have internal predecessors, (13505), 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) [2022-12-05 18:44:13,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:13,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 840 of 963 [2022-12-05 18:44:13,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:42,588 INFO L130 PetriNetUnfolder]: 19023/101391 cut-off events. [2022-12-05 18:44:42,588 INFO L131 PetriNetUnfolder]: For 43550/44060 co-relation queries the response was YES. [2022-12-05 18:44:44,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155772 conditions, 101391 events. 19023/101391 cut-off events. For 43550/44060 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 1394144 event pairs, 3225 based on Foata normal form. 216/94125 useless extension candidates. Maximal degree in co-relation 155379. Up to 11811 conditions per place. [2022-12-05 18:44:44,234 INFO L137 encePairwiseOnDemand]: 943/963 looper letters, 339 selfloop transitions, 67 changer transitions 109/1371 dead transitions. [2022-12-05 18:44:44,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 1371 transitions, 5508 flow [2022-12-05 18:44:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-05 18:44:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-05 18:44:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 28929 transitions. [2022-12-05 18:44:44,260 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8835440718343412 [2022-12-05 18:44:44,260 INFO L175 Difference]: Start difference. First operand has 1008 places, 1045 transitions, 2962 flow. Second operand 34 states and 28929 transitions. [2022-12-05 18:44:44,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 1371 transitions, 5508 flow [2022-12-05 18:44:44,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1040 places, 1371 transitions, 5507 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:44:44,938 INFO L231 Difference]: Finished difference. Result has 1066 places, 1088 transitions, 3638 flow [2022-12-05 18:44:44,939 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=1007, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=991, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3638, PETRI_PLACES=1066, PETRI_TRANSITIONS=1088} [2022-12-05 18:44:44,940 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 180 predicate places. [2022-12-05 18:44:44,940 INFO L495 AbstractCegarLoop]: Abstraction has has 1066 places, 1088 transitions, 3638 flow [2022-12-05 18:44:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 844.0625) internal successors, (13505), 16 states have internal predecessors, (13505), 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) [2022-12-05 18:44:44,943 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:44,944 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:44,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 18:44:45,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:44:45,154 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:44:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash 20263851, now seen corresponding path program 1 times [2022-12-05 18:44:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:45,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995439465] [2022-12-05 18:44:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-12-05 18:44:45,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:45,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995439465] [2022-12-05 18:44:45,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995439465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:45,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:44:45,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 18:44:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990945283] [2022-12-05 18:44:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:45,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 18:44:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 18:44:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-05 18:44:45,666 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 895 out of 963 [2022-12-05 18:44:45,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 1088 transitions, 3638 flow. Second operand has 8 states, 8 states have (on average 898.0) internal successors, (7184), 8 states have internal predecessors, (7184), 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) [2022-12-05 18:44:45,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:45,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 895 of 963 [2022-12-05 18:44:45,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:44:52,582 INFO L130 PetriNetUnfolder]: 2712/25356 cut-off events. [2022-12-05 18:44:52,582 INFO L131 PetriNetUnfolder]: For 32364/33930 co-relation queries the response was YES. [2022-12-05 18:44:52,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39428 conditions, 25356 events. 2712/25356 cut-off events. For 32364/33930 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 276922 event pairs, 321 based on Foata normal form. 162/23508 useless extension candidates. Maximal degree in co-relation 39178. Up to 1564 conditions per place. [2022-12-05 18:44:52,826 INFO L137 encePairwiseOnDemand]: 952/963 looper letters, 94 selfloop transitions, 23 changer transitions 5/1122 dead transitions. [2022-12-05 18:44:52,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1066 places, 1122 transitions, 4048 flow [2022-12-05 18:44:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 18:44:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 18:44:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9921 transitions. [2022-12-05 18:44:52,833 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9365618804871141 [2022-12-05 18:44:52,833 INFO L175 Difference]: Start difference. First operand has 1066 places, 1088 transitions, 3638 flow. Second operand 11 states and 9921 transitions. [2022-12-05 18:44:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1066 places, 1122 transitions, 4048 flow [2022-12-05 18:44:52,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1055 places, 1122 transitions, 3971 flow, removed 23 selfloop flow, removed 11 redundant places. [2022-12-05 18:44:53,005 INFO L231 Difference]: Finished difference. Result has 1059 places, 1093 transitions, 3661 flow [2022-12-05 18:44:53,007 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=963, PETRI_DIFFERENCE_MINUEND_FLOW=3565, PETRI_DIFFERENCE_MINUEND_PLACES=1045, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3661, PETRI_PLACES=1059, PETRI_TRANSITIONS=1093} [2022-12-05 18:44:53,007 INFO L294 CegarLoopForPetriNet]: 886 programPoint places, 173 predicate places. [2022-12-05 18:44:53,007 INFO L495 AbstractCegarLoop]: Abstraction has has 1059 places, 1093 transitions, 3661 flow [2022-12-05 18:44:53,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 898.0) internal successors, (7184), 8 states have internal predecessors, (7184), 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) [2022-12-05 18:44:53,009 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:44:53,010 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:44:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 18:44:53,010 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:44:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:44:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1433680319, now seen corresponding path program 1 times [2022-12-05 18:44:53,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:44:53,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356386350] [2022-12-05 18:44:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:44:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:44:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:44:54,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356386350] [2022-12-05 18:44:54,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356386350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:44:54,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913133239] [2022-12-05 18:44:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:44:54,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:44:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:44:54,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:44:54,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 18:44:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:44:54,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 18:44:54,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:44:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-12-05 18:44:54,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:44:54,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913133239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:44:54,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:44:54,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2022-12-05 18:44:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667089967] [2022-12-05 18:44:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:44:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:44:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:44:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:44:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:44:54,924 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 895 out of 963 [2022-12-05 18:44:54,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1059 places, 1093 transitions, 3661 flow. Second operand has 6 states, 6 states have (on average 898.0) internal successors, (5388), 6 states have internal predecessors, (5388), 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) [2022-12-05 18:44:54,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:44:54,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 895 of 963 [2022-12-05 18:44:54,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand