/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_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:42:10,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:42:10,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:42:10,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:42:10,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:42:10,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:42:10,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:42:10,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:42:10,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:42:10,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:42:10,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:42:10,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:42:10,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:42:10,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:42:10,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:42:10,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:42:10,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:42:10,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:42:10,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:42:10,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:42:10,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:42:10,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:42:10,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:42:10,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:42:10,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:42:10,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:42:10,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:42:10,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:42:10,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:42:10,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:42:10,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:42:10,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:42:10,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:42:10,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:42:10,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:42:10,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:42:10,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:42:10,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:42:10,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:42:10,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:42:10,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:42:10,202 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 18:42:10,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:42:10,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:42:10,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:42:10,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:42:10,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:42:10,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:42:10,230 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:42:10,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:42:10,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:42:10,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:42:10,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:42:10,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:42:10,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:42:10,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:42:10,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:42:10,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:42:10,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:42:10,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:42:10,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:42:10,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:42:10,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:42:10,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:42:10,497 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:42:10,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-05 18:42:11,472 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:42:11,918 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:42:11,918 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-05 18:42:11,955 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93b7a1a3/77a7d007537048988699fc0edd3dd0a3/FLAG97dfc96d6 [2022-12-05 18:42:11,972 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93b7a1a3/77a7d007537048988699fc0edd3dd0a3 [2022-12-05 18:42:11,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:42:11,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:42:11,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:42:11,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:42:11,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:42:11,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:42:11" (1/1) ... [2022-12-05 18:42:11,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54b28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:11, skipping insertion in model container [2022-12-05 18:42:11,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:42:11" (1/1) ... [2022-12-05 18:42:11,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:42:12,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:42:12,419 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i[5469,5482] [2022-12-05 18:42:12,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:12,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:12,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:12,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:12,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:12,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:13,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:13,663 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-05 18:42:13,669 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:13,675 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:13,687 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:13,828 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:42:13,834 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:42:14,013 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-05 18:42:14,293 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:42:14,304 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:42:14,376 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-05 18:42:14,381 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-05 18:42:14,685 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-05 18:42:14,690 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-05 18:42:14,695 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-05 18:42:14,822 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-05 18:42:14,822 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:42:14,826 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-05 18:42:14,826 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:42:15,016 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-05 18:42:15,048 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-05 18:42:15,206 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-05 18:42:15,211 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-05 18:42:15,400 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-05 18:42:15,640 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-05 18:42:15,640 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-05 18:42:15,641 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-05 18:42:17,194 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-05 18:42:17,195 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,197 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,200 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,202 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,681 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-05 18:42:17,686 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-05 18:42:17,693 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-05 18:42:17,701 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-05 18:42:17,701 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-05 18:42:17,704 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-05 18:42:17,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:42:17,742 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:42:17,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i[5469,5482] [2022-12-05 18:42:17,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:42:17,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:42:17,781 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-12-05 18:42:17,781 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:17,782 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:17,783 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-12-05 18:42:17,786 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:42:17,789 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-12-05 18:42:17,792 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-12-05 18:42:17,804 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:42:17,806 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-12-05 18:42:17,807 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-12-05 18:42:17,808 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-12-05 18:42:17,814 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-12-05 18:42:17,814 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-12-05 18:42:17,815 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-12-05 18:42:17,818 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-05 18:42:17,818 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:42:17,819 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-12-05 18:42:17,819 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-12-05 18:42:17,826 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-12-05 18:42:17,829 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-12-05 18:42:17,833 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-12-05 18:42:17,834 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-12-05 18:42:17,836 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-12-05 18:42:17,840 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-12-05 18:42:17,840 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-12-05 18:42:17,840 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-12-05 18:42:17,902 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-12-05 18:42:17,903 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,906 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,911 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,914 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-12-05 18:42:17,948 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-12-05 18:42:17,950 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-12-05 18:42:17,950 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-12-05 18:42:17,953 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-12-05 18:42:17,953 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-12-05 18:42:17,953 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-12-05 18:42:17,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:42:18,401 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:42:18,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18 WrapperNode [2022-12-05 18:42:18,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:42:18,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:42:18,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:42:18,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:42:18,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,510 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 16, statements flattened = 282 [2022-12-05 18:42:18,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:42:18,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:42:18,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:42:18,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:42:18,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:42:18,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:42:18,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:42:18,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:42:18,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (1/1) ... [2022-12-05 18:42:18,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:42:18,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:42:18,588 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 18:42:18,593 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 18:42:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:42:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-05 18:42:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:42:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-05 18:42:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:42:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_llseek [2022-12-05 18:42:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_llseek [2022-12-05 18:42:18,616 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 18:42:18,980 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:42:18,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:42:19,266 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:42:19,301 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:42:19,301 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:42:19,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:42:19 BoogieIcfgContainer [2022-12-05 18:42:19,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:42:19,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:42:19,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:42:19,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:42:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:42:11" (1/3) ... [2022-12-05 18:42:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41049344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:42:19, skipping insertion in model container [2022-12-05 18:42:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:42:18" (2/3) ... [2022-12-05 18:42:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41049344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:42:19, skipping insertion in model container [2022-12-05 18:42:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:42:19" (3/3) ... [2022-12-05 18:42:19,310 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_llseek_nvram_unlocked_ioctl.i [2022-12-05 18:42:19,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:42:19,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:42:19,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:42:19,389 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 18:42:19,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 293 transitions, 602 flow [2022-12-05 18:42:19,483 INFO L130 PetriNetUnfolder]: 11/291 cut-off events. [2022-12-05 18:42:19,483 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:42:19,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 291 events. 11/291 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 228 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 229. Up to 5 conditions per place. [2022-12-05 18:42:19,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 293 transitions, 602 flow [2022-12-05 18:42:19,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 283 transitions, 575 flow [2022-12-05 18:42:19,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:42:19,507 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;@281f7bb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:42:19,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 18:42:19,546 INFO L130 PetriNetUnfolder]: 9/260 cut-off events. [2022-12-05 18:42:19,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:42:19,547 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:19,547 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:19,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 855174999, now seen corresponding path program 1 times [2022-12-05 18:42:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505780982] [2022-12-05 18:42:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:20,294 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 18:42:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:20,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505780982] [2022-12-05 18:42:20,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505780982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:20,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:20,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:42:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86981093] [2022-12-05 18:42:20,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:42:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:42:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:42:20,332 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 293 [2022-12-05 18:42:20,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 283 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:20,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:20,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 293 [2022-12-05 18:42:20,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:20,896 INFO L130 PetriNetUnfolder]: 268/1187 cut-off events. [2022-12-05 18:42:20,896 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-12-05 18:42:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1187 events. 268/1187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7162 event pairs, 92 based on Foata normal form. 7/1095 useless extension candidates. Maximal degree in co-relation 1176. Up to 253 conditions per place. [2022-12-05 18:42:20,907 INFO L137 encePairwiseOnDemand]: 282/293 looper letters, 55 selfloop transitions, 8 changer transitions 44/338 dead transitions. [2022-12-05 18:42:20,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 338 transitions, 927 flow [2022-12-05 18:42:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 18:42:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 18:42:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3002 transitions. [2022-12-05 18:42:20,931 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.853811149032992 [2022-12-05 18:42:20,933 INFO L175 Difference]: Start difference. First operand has 279 places, 283 transitions, 575 flow. Second operand 12 states and 3002 transitions. [2022-12-05 18:42:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 338 transitions, 927 flow [2022-12-05 18:42:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 338 transitions, 902 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 18:42:20,951 INFO L231 Difference]: Finished difference. Result has 295 places, 286 transitions, 647 flow [2022-12-05 18:42:20,953 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=647, PETRI_PLACES=295, PETRI_TRANSITIONS=286} [2022-12-05 18:42:20,956 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 16 predicate places. [2022-12-05 18:42:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 286 transitions, 647 flow [2022-12-05 18:42:20,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:20,958 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:20,958 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:20,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:42:20,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash 697479891, now seen corresponding path program 1 times [2022-12-05 18:42:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981169400] [2022-12-05 18:42:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:20,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:22,133 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 18:42:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:22,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981169400] [2022-12-05 18:42:22,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981169400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:22,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:22,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298565972] [2022-12-05 18:42:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:22,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:22,141 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:22,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 286 transitions, 647 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:22,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:22,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:23,389 INFO L130 PetriNetUnfolder]: 799/3000 cut-off events. [2022-12-05 18:42:23,389 INFO L131 PetriNetUnfolder]: For 1753/1765 co-relation queries the response was YES. [2022-12-05 18:42:23,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 3000 events. 799/3000 cut-off events. For 1753/1765 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24468 event pairs, 50 based on Foata normal form. 12/2810 useless extension candidates. Maximal degree in co-relation 5090. Up to 364 conditions per place. [2022-12-05 18:42:23,407 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 123 selfloop transitions, 31 changer transitions 96/470 dead transitions. [2022-12-05 18:42:23,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 470 transitions, 1764 flow [2022-12-05 18:42:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-05 18:42:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-05 18:42:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8296 transitions. [2022-12-05 18:42:23,420 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8089712335446124 [2022-12-05 18:42:23,420 INFO L175 Difference]: Start difference. First operand has 295 places, 286 transitions, 647 flow. Second operand 35 states and 8296 transitions. [2022-12-05 18:42:23,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 470 transitions, 1764 flow [2022-12-05 18:42:23,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 470 transitions, 1736 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-12-05 18:42:23,441 INFO L231 Difference]: Finished difference. Result has 333 places, 305 transitions, 870 flow [2022-12-05 18:42:23,441 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=870, PETRI_PLACES=333, PETRI_TRANSITIONS=305} [2022-12-05 18:42:23,442 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 54 predicate places. [2022-12-05 18:42:23,443 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 305 transitions, 870 flow [2022-12-05 18:42:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:23,445 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:23,445 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:23,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:42:23,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1360600997, now seen corresponding path program 2 times [2022-12-05 18:42:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704113858] [2022-12-05 18:42:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:24,380 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 18:42:24,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704113858] [2022-12-05 18:42:24,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704113858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:24,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:24,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247694342] [2022-12-05 18:42:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:24,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:24,386 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:24,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 305 transitions, 870 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:24,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:24,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:24,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:25,461 INFO L130 PetriNetUnfolder]: 1008/3824 cut-off events. [2022-12-05 18:42:25,462 INFO L131 PetriNetUnfolder]: For 6478/6514 co-relation queries the response was YES. [2022-12-05 18:42:25,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 3824 events. 1008/3824 cut-off events. For 6478/6514 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 33824 event pairs, 120 based on Foata normal form. 18/3526 useless extension candidates. Maximal degree in co-relation 7283. Up to 572 conditions per place. [2022-12-05 18:42:25,482 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 121 selfloop transitions, 42 changer transitions 64/447 dead transitions. [2022-12-05 18:42:25,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 447 transitions, 1996 flow [2022-12-05 18:42:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-05 18:42:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-05 18:42:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6186 transitions. [2022-12-05 18:42:25,493 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8120241533210817 [2022-12-05 18:42:25,493 INFO L175 Difference]: Start difference. First operand has 333 places, 305 transitions, 870 flow. Second operand 26 states and 6186 transitions. [2022-12-05 18:42:25,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 447 transitions, 1996 flow [2022-12-05 18:42:25,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 447 transitions, 1955 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-12-05 18:42:25,515 INFO L231 Difference]: Finished difference. Result has 352 places, 322 transitions, 1166 flow [2022-12-05 18:42:25,516 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1166, PETRI_PLACES=352, PETRI_TRANSITIONS=322} [2022-12-05 18:42:25,517 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 73 predicate places. [2022-12-05 18:42:25,517 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 322 transitions, 1166 flow [2022-12-05 18:42:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:25,519 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:25,519 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:42:25,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -794095039, now seen corresponding path program 3 times [2022-12-05 18:42:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:25,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553133556] [2022-12-05 18:42:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:26,255 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 18:42:26,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553133556] [2022-12-05 18:42:26,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553133556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:26,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:26,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116466707] [2022-12-05 18:42:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:26,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:26,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:26,260 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:26,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 322 transitions, 1166 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:26,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:26,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:26,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:27,986 INFO L130 PetriNetUnfolder]: 1601/5999 cut-off events. [2022-12-05 18:42:27,987 INFO L131 PetriNetUnfolder]: For 20762/20842 co-relation queries the response was YES. [2022-12-05 18:42:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13942 conditions, 5999 events. 1601/5999 cut-off events. For 20762/20842 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 59911 event pairs, 188 based on Foata normal form. 24/5495 useless extension candidates. Maximal degree in co-relation 13839. Up to 760 conditions per place. [2022-12-05 18:42:28,022 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 183 selfloop transitions, 59 changer transitions 93/555 dead transitions. [2022-12-05 18:42:28,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 555 transitions, 3045 flow [2022-12-05 18:42:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-05 18:42:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-05 18:42:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 9046 transitions. [2022-12-05 18:42:28,035 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8124663193820729 [2022-12-05 18:42:28,036 INFO L175 Difference]: Start difference. First operand has 352 places, 322 transitions, 1166 flow. Second operand 38 states and 9046 transitions. [2022-12-05 18:42:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 555 transitions, 3045 flow [2022-12-05 18:42:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 555 transitions, 2878 flow, removed 34 selfloop flow, removed 13 redundant places. [2022-12-05 18:42:28,091 INFO L231 Difference]: Finished difference. Result has 383 places, 348 transitions, 1541 flow [2022-12-05 18:42:28,091 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1541, PETRI_PLACES=383, PETRI_TRANSITIONS=348} [2022-12-05 18:42:28,093 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 104 predicate places. [2022-12-05 18:42:28,093 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 348 transitions, 1541 flow [2022-12-05 18:42:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:28,094 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:28,095 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:28,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 18:42:28,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1206955021, now seen corresponding path program 4 times [2022-12-05 18:42:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310202869] [2022-12-05 18:42:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:28,929 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 18:42:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310202869] [2022-12-05 18:42:28,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310202869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:28,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:28,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698365718] [2022-12-05 18:42:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:28,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:28,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:28,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:28,933 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:28,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 348 transitions, 1541 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:28,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:28,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:28,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:30,785 INFO L130 PetriNetUnfolder]: 1851/7025 cut-off events. [2022-12-05 18:42:30,785 INFO L131 PetriNetUnfolder]: For 37825/37933 co-relation queries the response was YES. [2022-12-05 18:42:30,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17410 conditions, 7025 events. 1851/7025 cut-off events. For 37825/37933 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 73547 event pairs, 264 based on Foata normal form. 26/6428 useless extension candidates. Maximal degree in co-relation 17287. Up to 930 conditions per place. [2022-12-05 18:42:30,843 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 160 selfloop transitions, 70 changer transitions 80/530 dead transitions. [2022-12-05 18:42:30,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 530 transitions, 3281 flow [2022-12-05 18:42:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-05 18:42:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-05 18:42:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7617 transitions. [2022-12-05 18:42:30,853 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8123933447098977 [2022-12-05 18:42:30,857 INFO L175 Difference]: Start difference. First operand has 383 places, 348 transitions, 1541 flow. Second operand 32 states and 7617 transitions. [2022-12-05 18:42:30,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 530 transitions, 3281 flow [2022-12-05 18:42:30,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 530 transitions, 3154 flow, removed 45 selfloop flow, removed 9 redundant places. [2022-12-05 18:42:30,920 INFO L231 Difference]: Finished difference. Result has 413 places, 364 transitions, 1900 flow [2022-12-05 18:42:30,921 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1900, PETRI_PLACES=413, PETRI_TRANSITIONS=364} [2022-12-05 18:42:30,922 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 134 predicate places. [2022-12-05 18:42:30,922 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 364 transitions, 1900 flow [2022-12-05 18:42:30,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:30,923 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:30,923 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:30,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:42:30,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1225972665, now seen corresponding path program 5 times [2022-12-05 18:42:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573862312] [2022-12-05 18:42:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:31,620 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 18:42:31,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:31,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573862312] [2022-12-05 18:42:31,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573862312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:31,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:31,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932296684] [2022-12-05 18:42:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:31,624 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:31,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 364 transitions, 1900 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:31,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:31,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:33,627 INFO L130 PetriNetUnfolder]: 1822/6931 cut-off events. [2022-12-05 18:42:33,627 INFO L131 PetriNetUnfolder]: For 52642/52778 co-relation queries the response was YES. [2022-12-05 18:42:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18244 conditions, 6931 events. 1822/6931 cut-off events. For 52642/52778 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 72312 event pairs, 272 based on Foata normal form. 44/6357 useless extension candidates. Maximal degree in co-relation 18110. Up to 930 conditions per place. [2022-12-05 18:42:33,685 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 187 selfloop transitions, 69 changer transitions 92/568 dead transitions. [2022-12-05 18:42:33,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 568 transitions, 3859 flow [2022-12-05 18:42:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-05 18:42:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-05 18:42:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8809 transitions. [2022-12-05 18:42:33,693 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8125634166589798 [2022-12-05 18:42:33,693 INFO L175 Difference]: Start difference. First operand has 413 places, 364 transitions, 1900 flow. Second operand 37 states and 8809 transitions. [2022-12-05 18:42:33,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 568 transitions, 3859 flow [2022-12-05 18:42:33,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 568 transitions, 3728 flow, removed 57 selfloop flow, removed 8 redundant places. [2022-12-05 18:42:33,805 INFO L231 Difference]: Finished difference. Result has 447 places, 371 transitions, 2137 flow [2022-12-05 18:42:33,805 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2137, PETRI_PLACES=447, PETRI_TRANSITIONS=371} [2022-12-05 18:42:33,806 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 168 predicate places. [2022-12-05 18:42:33,806 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 371 transitions, 2137 flow [2022-12-05 18:42:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:33,807 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:33,807 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:42:33,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1753313207, now seen corresponding path program 6 times [2022-12-05 18:42:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:33,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42939412] [2022-12-05 18:42:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:34,631 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 18:42:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:34,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42939412] [2022-12-05 18:42:34,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42939412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:34,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:34,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993273672] [2022-12-05 18:42:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:34,637 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:34,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 371 transitions, 2137 flow. Second operand has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:34,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:34,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:34,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:36,536 INFO L130 PetriNetUnfolder]: 1797/6816 cut-off events. [2022-12-05 18:42:36,537 INFO L131 PetriNetUnfolder]: For 67683/67789 co-relation queries the response was YES. [2022-12-05 18:42:36,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18715 conditions, 6816 events. 1797/6816 cut-off events. For 67683/67789 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 71128 event pairs, 302 based on Foata normal form. 38/6239 useless extension candidates. Maximal degree in co-relation 18564. Up to 996 conditions per place. [2022-12-05 18:42:36,592 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 173 selfloop transitions, 70 changer transitions 74/537 dead transitions. [2022-12-05 18:42:36,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 537 transitions, 3895 flow [2022-12-05 18:42:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-05 18:42:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-05 18:42:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7613 transitions. [2022-12-05 18:42:36,598 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8119667235494881 [2022-12-05 18:42:36,598 INFO L175 Difference]: Start difference. First operand has 447 places, 371 transitions, 2137 flow. Second operand 32 states and 7613 transitions. [2022-12-05 18:42:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 537 transitions, 3895 flow [2022-12-05 18:42:36,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 537 transitions, 3632 flow, removed 64 selfloop flow, removed 19 redundant places. [2022-12-05 18:42:36,697 INFO L231 Difference]: Finished difference. Result has 465 places, 377 transitions, 2237 flow [2022-12-05 18:42:36,698 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2237, PETRI_PLACES=465, PETRI_TRANSITIONS=377} [2022-12-05 18:42:36,698 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 186 predicate places. [2022-12-05 18:42:36,698 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 377 transitions, 2237 flow [2022-12-05 18:42:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.28571428571428) internal successors, (3266), 14 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:36,699 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:36,699 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:36,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:42:36,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2057033381, now seen corresponding path program 1 times [2022-12-05 18:42:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:36,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862832733] [2022-12-05 18:42:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:37,396 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 18:42:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862832733] [2022-12-05 18:42:37,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862832733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:37,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:37,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:37,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213951082] [2022-12-05 18:42:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:37,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:37,399 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:37,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 377 transitions, 2237 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:37,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:37,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:39,735 INFO L130 PetriNetUnfolder]: 3281/10359 cut-off events. [2022-12-05 18:42:39,736 INFO L131 PetriNetUnfolder]: For 115953/115959 co-relation queries the response was YES. [2022-12-05 18:42:39,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31292 conditions, 10359 events. 3281/10359 cut-off events. For 115953/115959 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 112532 event pairs, 244 based on Foata normal form. 12/9622 useless extension candidates. Maximal degree in co-relation 30732. Up to 1898 conditions per place. [2022-12-05 18:42:39,827 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 144 selfloop transitions, 77 changer transitions 183/632 dead transitions. [2022-12-05 18:42:39,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 632 transitions, 5277 flow [2022-12-05 18:42:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:42:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:42:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7144 transitions. [2022-12-05 18:42:39,834 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8127417519908987 [2022-12-05 18:42:39,834 INFO L175 Difference]: Start difference. First operand has 465 places, 377 transitions, 2237 flow. Second operand 30 states and 7144 transitions. [2022-12-05 18:42:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 632 transitions, 5277 flow [2022-12-05 18:42:40,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 632 transitions, 4903 flow, removed 83 selfloop flow, removed 17 redundant places. [2022-12-05 18:42:40,121 INFO L231 Difference]: Finished difference. Result has 482 places, 395 transitions, 2513 flow [2022-12-05 18:42:40,122 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2513, PETRI_PLACES=482, PETRI_TRANSITIONS=395} [2022-12-05 18:42:40,124 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 203 predicate places. [2022-12-05 18:42:40,124 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 395 transitions, 2513 flow [2022-12-05 18:42:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:40,125 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:40,125 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:42:40,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -851715831, now seen corresponding path program 2 times [2022-12-05 18:42:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:40,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511814408] [2022-12-05 18:42:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:40,831 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 18:42:40,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:40,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511814408] [2022-12-05 18:42:40,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511814408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:40,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:40,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044472589] [2022-12-05 18:42:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:40,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:40,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:40,834 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:40,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 395 transitions, 2513 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:40,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:40,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:42,449 INFO L130 PetriNetUnfolder]: 2382/7680 cut-off events. [2022-12-05 18:42:42,449 INFO L131 PetriNetUnfolder]: For 113128/113448 co-relation queries the response was YES. [2022-12-05 18:42:42,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25079 conditions, 7680 events. 2382/7680 cut-off events. For 113128/113448 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 79592 event pairs, 236 based on Foata normal form. 143/7136 useless extension candidates. Maximal degree in co-relation 24512. Up to 1220 conditions per place. [2022-12-05 18:42:42,515 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 122 selfloop transitions, 71 changer transitions 105/526 dead transitions. [2022-12-05 18:42:42,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 526 transitions, 4153 flow [2022-12-05 18:42:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 18:42:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 18:42:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4767 transitions. [2022-12-05 18:42:42,520 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.813481228668942 [2022-12-05 18:42:42,520 INFO L175 Difference]: Start difference. First operand has 482 places, 395 transitions, 2513 flow. Second operand 20 states and 4767 transitions. [2022-12-05 18:42:42,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 526 transitions, 4153 flow [2022-12-05 18:42:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 526 transitions, 3960 flow, removed 71 selfloop flow, removed 19 redundant places. [2022-12-05 18:42:42,786 INFO L231 Difference]: Finished difference. Result has 475 places, 384 transitions, 2376 flow [2022-12-05 18:42:42,787 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2376, PETRI_PLACES=475, PETRI_TRANSITIONS=384} [2022-12-05 18:42:42,789 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 196 predicate places. [2022-12-05 18:42:42,789 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 384 transitions, 2376 flow [2022-12-05 18:42:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:42,791 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:42,792 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:42,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 18:42:42,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 649010387, now seen corresponding path program 3 times [2022-12-05 18:42:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:42,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115909362] [2022-12-05 18:42:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:42,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:43,400 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 18:42:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115909362] [2022-12-05 18:42:43,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115909362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:43,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:43,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93154792] [2022-12-05 18:42:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:43,404 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:43,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 384 transitions, 2376 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:43,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:43,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:43,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:45,012 INFO L130 PetriNetUnfolder]: 2445/8003 cut-off events. [2022-12-05 18:42:45,013 INFO L131 PetriNetUnfolder]: For 104459/104967 co-relation queries the response was YES. [2022-12-05 18:42:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25225 conditions, 8003 events. 2445/8003 cut-off events. For 104459/104967 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 84087 event pairs, 262 based on Foata normal form. 157/7418 useless extension candidates. Maximal degree in co-relation 24664. Up to 1548 conditions per place. [2022-12-05 18:42:45,084 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 133 selfloop transitions, 64 changer transitions 103/528 dead transitions. [2022-12-05 18:42:45,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 528 transitions, 4088 flow [2022-12-05 18:42:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:42:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:42:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5006 transitions. [2022-12-05 18:42:45,089 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8135868681943768 [2022-12-05 18:42:45,089 INFO L175 Difference]: Start difference. First operand has 475 places, 384 transitions, 2376 flow. Second operand 21 states and 5006 transitions. [2022-12-05 18:42:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 528 transitions, 4088 flow [2022-12-05 18:42:45,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 528 transitions, 3948 flow, removed 20 selfloop flow, removed 14 redundant places. [2022-12-05 18:42:45,337 INFO L231 Difference]: Finished difference. Result has 481 places, 385 transitions, 2438 flow [2022-12-05 18:42:45,338 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2438, PETRI_PLACES=481, PETRI_TRANSITIONS=385} [2022-12-05 18:42:45,339 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 202 predicate places. [2022-12-05 18:42:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 385 transitions, 2438 flow [2022-12-05 18:42:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:45,340 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:45,340 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:45,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 18:42:45,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:45,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash 816451107, now seen corresponding path program 4 times [2022-12-05 18:42:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:45,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148152801] [2022-12-05 18:42:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:46,369 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 18:42:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148152801] [2022-12-05 18:42:46,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148152801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:46,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:46,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 18:42:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416538469] [2022-12-05 18:42:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 18:42:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 18:42:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-05 18:42:46,373 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-05 18:42:46,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 385 transitions, 2438 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:46,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:46,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-05 18:42:46,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:48,622 INFO L130 PetriNetUnfolder]: 2463/8235 cut-off events. [2022-12-05 18:42:48,622 INFO L131 PetriNetUnfolder]: For 87876/88378 co-relation queries the response was YES. [2022-12-05 18:42:48,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24137 conditions, 8235 events. 2463/8235 cut-off events. For 87876/88378 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 86347 event pairs, 680 based on Foata normal form. 98/7501 useless extension candidates. Maximal degree in co-relation 23625. Up to 2181 conditions per place. [2022-12-05 18:42:48,701 INFO L137 encePairwiseOnDemand]: 275/293 looper letters, 200 selfloop transitions, 31 changer transitions 55/504 dead transitions. [2022-12-05 18:42:48,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 504 transitions, 3821 flow [2022-12-05 18:42:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-05 18:42:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-05 18:42:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5664 transitions. [2022-12-05 18:42:48,706 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8054607508532423 [2022-12-05 18:42:48,706 INFO L175 Difference]: Start difference. First operand has 481 places, 385 transitions, 2438 flow. Second operand 24 states and 5664 transitions. [2022-12-05 18:42:48,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 504 transitions, 3821 flow [2022-12-05 18:42:48,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 504 transitions, 3679 flow, removed 24 selfloop flow, removed 14 redundant places. [2022-12-05 18:42:48,949 INFO L231 Difference]: Finished difference. Result has 496 places, 380 transitions, 2359 flow [2022-12-05 18:42:48,950 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2359, PETRI_PLACES=496, PETRI_TRANSITIONS=380} [2022-12-05 18:42:48,950 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 217 predicate places. [2022-12-05 18:42:48,950 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 380 transitions, 2359 flow [2022-12-05 18:42:48,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:48,952 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:48,952 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 18:42:48,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:48,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1690106171, now seen corresponding path program 5 times [2022-12-05 18:42:48,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:48,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948640577] [2022-12-05 18:42:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:49,476 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 18:42:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948640577] [2022-12-05 18:42:49,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948640577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:49,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:49,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632811936] [2022-12-05 18:42:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:49,480 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:49,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 380 transitions, 2359 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:49,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:49,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:49,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:50,945 INFO L130 PetriNetUnfolder]: 2152/7069 cut-off events. [2022-12-05 18:42:50,945 INFO L131 PetriNetUnfolder]: For 91402/91944 co-relation queries the response was YES. [2022-12-05 18:42:51,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22766 conditions, 7069 events. 2152/7069 cut-off events. For 91402/91944 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 71888 event pairs, 202 based on Foata normal form. 151/6601 useless extension candidates. Maximal degree in co-relation 22397. Up to 1777 conditions per place. [2022-12-05 18:42:51,014 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 114 selfloop transitions, 48 changer transitions 95/485 dead transitions. [2022-12-05 18:42:51,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 485 transitions, 3505 flow [2022-12-05 18:42:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:42:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:42:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4534 transitions. [2022-12-05 18:42:51,017 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8144422489671277 [2022-12-05 18:42:51,017 INFO L175 Difference]: Start difference. First operand has 496 places, 380 transitions, 2359 flow. Second operand 19 states and 4534 transitions. [2022-12-05 18:42:51,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 485 transitions, 3505 flow [2022-12-05 18:42:51,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 485 transitions, 3351 flow, removed 47 selfloop flow, removed 29 redundant places. [2022-12-05 18:42:51,289 INFO L231 Difference]: Finished difference. Result has 480 places, 362 transitions, 2046 flow [2022-12-05 18:42:51,289 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2046, PETRI_PLACES=480, PETRI_TRANSITIONS=362} [2022-12-05 18:42:51,290 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 201 predicate places. [2022-12-05 18:42:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 362 transitions, 2046 flow [2022-12-05 18:42:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:51,291 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:51,291 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 18:42:51,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1037161801, now seen corresponding path program 6 times [2022-12-05 18:42:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:51,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291125301] [2022-12-05 18:42:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:52,225 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 18:42:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291125301] [2022-12-05 18:42:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291125301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:52,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:52,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 18:42:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441407593] [2022-12-05 18:42:52,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:52,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 18:42:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 18:42:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-05 18:42:52,229 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-05 18:42:52,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 362 transitions, 2046 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:52,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:52,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-05 18:42:52,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:53,797 INFO L130 PetriNetUnfolder]: 1793/6060 cut-off events. [2022-12-05 18:42:53,798 INFO L131 PetriNetUnfolder]: For 42011/42165 co-relation queries the response was YES. [2022-12-05 18:42:53,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16762 conditions, 6060 events. 1793/6060 cut-off events. For 42011/42165 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 58623 event pairs, 434 based on Foata normal form. 34/5522 useless extension candidates. Maximal degree in co-relation 16476. Up to 1677 conditions per place. [2022-12-05 18:42:53,850 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 141 selfloop transitions, 15 changer transitions 98/472 dead transitions. [2022-12-05 18:42:53,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 472 transitions, 3218 flow [2022-12-05 18:42:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-05 18:42:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-05 18:42:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5887 transitions. [2022-12-05 18:42:53,854 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8036860068259386 [2022-12-05 18:42:53,854 INFO L175 Difference]: Start difference. First operand has 480 places, 362 transitions, 2046 flow. Second operand 25 states and 5887 transitions. [2022-12-05 18:42:53,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 472 transitions, 3218 flow [2022-12-05 18:42:53,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 472 transitions, 2952 flow, removed 13 selfloop flow, removed 22 redundant places. [2022-12-05 18:42:53,957 INFO L231 Difference]: Finished difference. Result has 477 places, 344 transitions, 1659 flow [2022-12-05 18:42:53,958 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1659, PETRI_PLACES=477, PETRI_TRANSITIONS=344} [2022-12-05 18:42:53,958 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 198 predicate places. [2022-12-05 18:42:53,958 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 344 transitions, 1659 flow [2022-12-05 18:42:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:53,959 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:53,959 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:53,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 18:42:53,960 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash -831650421, now seen corresponding path program 7 times [2022-12-05 18:42:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:53,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781443131] [2022-12-05 18:42:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:54,872 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 18:42:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781443131] [2022-12-05 18:42:54,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781443131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:54,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:54,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 18:42:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588920300] [2022-12-05 18:42:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 18:42:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 18:42:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-05 18:42:54,876 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-05 18:42:54,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 344 transitions, 1659 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:54,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:54,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-05 18:42:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:56,877 INFO L130 PetriNetUnfolder]: 1446/4871 cut-off events. [2022-12-05 18:42:56,877 INFO L131 PetriNetUnfolder]: For 35398/35506 co-relation queries the response was YES. [2022-12-05 18:42:56,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13942 conditions, 4871 events. 1446/4871 cut-off events. For 35398/35506 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 44435 event pairs, 348 based on Foata normal form. 64/4472 useless extension candidates. Maximal degree in co-relation 13882. Up to 1376 conditions per place. [2022-12-05 18:42:56,919 INFO L137 encePairwiseOnDemand]: 274/293 looper letters, 96 selfloop transitions, 32 changer transitions 115/461 dead transitions. [2022-12-05 18:42:56,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 461 transitions, 2794 flow [2022-12-05 18:42:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-05 18:42:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-05 18:42:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6812 transitions. [2022-12-05 18:42:56,923 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8016947157820408 [2022-12-05 18:42:56,923 INFO L175 Difference]: Start difference. First operand has 477 places, 344 transitions, 1659 flow. Second operand 29 states and 6812 transitions. [2022-12-05 18:42:56,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 461 transitions, 2794 flow [2022-12-05 18:42:57,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 461 transitions, 2513 flow, removed 81 selfloop flow, removed 37 redundant places. [2022-12-05 18:42:57,084 INFO L231 Difference]: Finished difference. Result has 456 places, 323 transitions, 1354 flow [2022-12-05 18:42:57,084 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1354, PETRI_PLACES=456, PETRI_TRANSITIONS=323} [2022-12-05 18:42:57,084 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 177 predicate places. [2022-12-05 18:42:57,085 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 323 transitions, 1354 flow [2022-12-05 18:42:57,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:57,086 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:57,086 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:57,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 18:42:57,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash 540370231, now seen corresponding path program 8 times [2022-12-05 18:42:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:57,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106720763] [2022-12-05 18:42:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:57,617 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 18:42:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:57,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106720763] [2022-12-05 18:42:57,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106720763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:57,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:57,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769504533] [2022-12-05 18:42:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:57,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:57,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:57,620 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:57,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 323 transitions, 1354 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:57,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:57,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:57,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:42:58,688 INFO L130 PetriNetUnfolder]: 1105/3687 cut-off events. [2022-12-05 18:42:58,688 INFO L131 PetriNetUnfolder]: For 26569/26651 co-relation queries the response was YES. [2022-12-05 18:42:58,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 3687 events. 1105/3687 cut-off events. For 26569/26651 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31686 event pairs, 183 based on Foata normal form. 28/3424 useless extension candidates. Maximal degree in co-relation 11182. Up to 711 conditions per place. [2022-12-05 18:42:58,716 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 102 selfloop transitions, 30 changer transitions 112/467 dead transitions. [2022-12-05 18:42:58,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 467 transitions, 2705 flow [2022-12-05 18:42:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-05 18:42:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-05 18:42:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7096 transitions. [2022-12-05 18:42:58,724 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8072810011376564 [2022-12-05 18:42:58,725 INFO L175 Difference]: Start difference. First operand has 456 places, 323 transitions, 1354 flow. Second operand 30 states and 7096 transitions. [2022-12-05 18:42:58,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 467 transitions, 2705 flow [2022-12-05 18:42:58,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 467 transitions, 2456 flow, removed 36 selfloop flow, removed 34 redundant places. [2022-12-05 18:42:58,773 INFO L231 Difference]: Finished difference. Result has 416 places, 322 transitions, 1256 flow [2022-12-05 18:42:58,774 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1256, PETRI_PLACES=416, PETRI_TRANSITIONS=322} [2022-12-05 18:42:58,774 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 137 predicate places. [2022-12-05 18:42:58,774 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 322 transitions, 1256 flow [2022-12-05 18:42:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:58,775 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:42:58,775 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:42:58,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 18:42:58,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:42:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:42:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2096525061, now seen corresponding path program 9 times [2022-12-05 18:42:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:42:58,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527580616] [2022-12-05 18:42:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:42:58,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:42:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:42:59,394 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 18:42:59,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:42:59,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527580616] [2022-12-05 18:42:59,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527580616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:42:59,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:42:59,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:42:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091429806] [2022-12-05 18:42:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:42:59,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:42:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:42:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:42:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:42:59,397 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:42:59,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 322 transitions, 1256 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:42:59,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:42:59,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:42:59,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:00,224 INFO L130 PetriNetUnfolder]: 975/3239 cut-off events. [2022-12-05 18:43:00,225 INFO L131 PetriNetUnfolder]: For 15921/15995 co-relation queries the response was YES. [2022-12-05 18:43:00,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8731 conditions, 3239 events. 975/3239 cut-off events. For 15921/15995 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 27146 event pairs, 179 based on Foata normal form. 22/2972 useless extension candidates. Maximal degree in co-relation 8693. Up to 915 conditions per place. [2022-12-05 18:43:00,245 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 105 selfloop transitions, 28 changer transitions 54/410 dead transitions. [2022-12-05 18:43:00,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 410 transitions, 2109 flow [2022-12-05 18:43:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 18:43:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 18:43:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4751 transitions. [2022-12-05 18:43:00,248 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8107508532423208 [2022-12-05 18:43:00,249 INFO L175 Difference]: Start difference. First operand has 416 places, 322 transitions, 1256 flow. Second operand 20 states and 4751 transitions. [2022-12-05 18:43:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 410 transitions, 2109 flow [2022-12-05 18:43:00,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 410 transitions, 2016 flow, removed 31 selfloop flow, removed 18 redundant places. [2022-12-05 18:43:00,280 INFO L231 Difference]: Finished difference. Result has 409 places, 322 transitions, 1279 flow [2022-12-05 18:43:00,281 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1279, PETRI_PLACES=409, PETRI_TRANSITIONS=322} [2022-12-05 18:43:00,281 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 130 predicate places. [2022-12-05 18:43:00,281 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 322 transitions, 1279 flow [2022-12-05 18:43:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:00,282 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:00,282 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:00,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 18:43:00,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -267859019, now seen corresponding path program 10 times [2022-12-05 18:43:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730836094] [2022-12-05 18:43:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:00,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:00,774 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 18:43:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730836094] [2022-12-05 18:43:00,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730836094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:00,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:00,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 18:43:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360021210] [2022-12-05 18:43:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:00,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 18:43:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 18:43:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-05 18:43:00,777 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 293 [2022-12-05 18:43:00,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 322 transitions, 1279 flow. Second operand has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:00,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:00,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 293 [2022-12-05 18:43:00,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:01,486 INFO L130 PetriNetUnfolder]: 883/2961 cut-off events. [2022-12-05 18:43:01,487 INFO L131 PetriNetUnfolder]: For 11054/11142 co-relation queries the response was YES. [2022-12-05 18:43:01,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 2961 events. 883/2961 cut-off events. For 11054/11142 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 24066 event pairs, 159 based on Foata normal form. 22/2719 useless extension candidates. Maximal degree in co-relation 7709. Up to 915 conditions per place. [2022-12-05 18:43:01,505 INFO L137 encePairwiseOnDemand]: 277/293 looper letters, 83 selfloop transitions, 19 changer transitions 69/394 dead transitions. [2022-12-05 18:43:01,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 394 transitions, 1931 flow [2022-12-05 18:43:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:43:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:43:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4506 transitions. [2022-12-05 18:43:01,508 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8094126100233519 [2022-12-05 18:43:01,508 INFO L175 Difference]: Start difference. First operand has 409 places, 322 transitions, 1279 flow. Second operand 19 states and 4506 transitions. [2022-12-05 18:43:01,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 394 transitions, 1931 flow [2022-12-05 18:43:01,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 394 transitions, 1869 flow, removed 7 selfloop flow, removed 14 redundant places. [2022-12-05 18:43:01,533 INFO L231 Difference]: Finished difference. Result has 411 places, 312 transitions, 1133 flow [2022-12-05 18:43:01,534 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1133, PETRI_PLACES=411, PETRI_TRANSITIONS=312} [2022-12-05 18:43:01,534 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 132 predicate places. [2022-12-05 18:43:01,534 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 312 transitions, 1133 flow [2022-12-05 18:43:01,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 233.42857142857142) internal successors, (3268), 14 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:01,535 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:01,535 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:01,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 18:43:01,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 991175837, now seen corresponding path program 11 times [2022-12-05 18:43:01,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:01,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745484255] [2022-12-05 18:43:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:02,423 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 18:43:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745484255] [2022-12-05 18:43:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745484255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 18:43:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034996787] [2022-12-05 18:43:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 18:43:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 18:43:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-12-05 18:43:02,426 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-05 18:43:02,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 312 transitions, 1133 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:02,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:02,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-05 18:43:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:03,463 INFO L130 PetriNetUnfolder]: 822/2852 cut-off events. [2022-12-05 18:43:03,463 INFO L131 PetriNetUnfolder]: For 8042/8100 co-relation queries the response was YES. [2022-12-05 18:43:03,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 2852 events. 822/2852 cut-off events. For 8042/8100 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22427 event pairs, 224 based on Foata normal form. 18/2560 useless extension candidates. Maximal degree in co-relation 6805. Up to 815 conditions per place. [2022-12-05 18:43:03,482 INFO L137 encePairwiseOnDemand]: 276/293 looper letters, 85 selfloop transitions, 11 changer transitions 77/391 dead transitions. [2022-12-05 18:43:03,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 391 transitions, 1842 flow [2022-12-05 18:43:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 18:43:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 18:43:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5394 transitions. [2022-12-05 18:43:03,485 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8004154919127467 [2022-12-05 18:43:03,485 INFO L175 Difference]: Start difference. First operand has 411 places, 312 transitions, 1133 flow. Second operand 23 states and 5394 transitions. [2022-12-05 18:43:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 391 transitions, 1842 flow [2022-12-05 18:43:03,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 391 transitions, 1702 flow, removed 17 selfloop flow, removed 20 redundant places. [2022-12-05 18:43:03,505 INFO L231 Difference]: Finished difference. Result has 410 places, 301 transitions, 983 flow [2022-12-05 18:43:03,506 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=983, PETRI_PLACES=410, PETRI_TRANSITIONS=301} [2022-12-05 18:43:03,506 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 131 predicate places. [2022-12-05 18:43:03,506 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 301 transitions, 983 flow [2022-12-05 18:43:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:03,507 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:03,507 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:03,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 18:43:03,507 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash 780705293, now seen corresponding path program 12 times [2022-12-05 18:43:03,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:03,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997491780] [2022-12-05 18:43:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:03,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:04,837 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 18:43:04,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:04,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997491780] [2022-12-05 18:43:04,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997491780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:04,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:04,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-05 18:43:04,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780313795] [2022-12-05 18:43:04,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:04,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-05 18:43:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-05 18:43:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-12-05 18:43:04,843 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 293 [2022-12-05 18:43:04,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 301 transitions, 983 flow. Second operand has 30 states, 30 states have (on average 167.36666666666667) internal successors, (5021), 30 states have internal predecessors, (5021), 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 18:43:04,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:04,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 293 [2022-12-05 18:43:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:08,027 INFO L130 PetriNetUnfolder]: 1386/4206 cut-off events. [2022-12-05 18:43:08,028 INFO L131 PetriNetUnfolder]: For 16751/16791 co-relation queries the response was YES. [2022-12-05 18:43:08,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 4206 events. 1386/4206 cut-off events. For 16751/16791 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 34630 event pairs, 175 based on Foata normal form. 26/3881 useless extension candidates. Maximal degree in co-relation 11527. Up to 822 conditions per place. [2022-12-05 18:43:08,048 INFO L137 encePairwiseOnDemand]: 248/293 looper letters, 166 selfloop transitions, 53 changer transitions 102/477 dead transitions. [2022-12-05 18:43:08,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 477 transitions, 2584 flow [2022-12-05 18:43:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-05 18:43:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-05 18:43:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7361 transitions. [2022-12-05 18:43:08,064 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5842527184697198 [2022-12-05 18:43:08,065 INFO L175 Difference]: Start difference. First operand has 410 places, 301 transitions, 983 flow. Second operand 43 states and 7361 transitions. [2022-12-05 18:43:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 477 transitions, 2584 flow [2022-12-05 18:43:08,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 477 transitions, 2282 flow, removed 128 selfloop flow, removed 27 redundant places. [2022-12-05 18:43:08,101 INFO L231 Difference]: Finished difference. Result has 419 places, 317 transitions, 1110 flow [2022-12-05 18:43:08,101 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1110, PETRI_PLACES=419, PETRI_TRANSITIONS=317} [2022-12-05 18:43:08,101 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 140 predicate places. [2022-12-05 18:43:08,102 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 317 transitions, 1110 flow [2022-12-05 18:43:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 167.36666666666667) internal successors, (5021), 30 states have internal predecessors, (5021), 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 18:43:08,103 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:08,103 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:43:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 18:43:08,103 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -115769469, now seen corresponding path program 13 times [2022-12-05 18:43:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:08,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768840508] [2022-12-05 18:43:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:08,972 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 18:43:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:08,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768840508] [2022-12-05 18:43:08,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768840508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:08,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:08,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 18:43:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16651950] [2022-12-05 18:43:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 18:43:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 18:43:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-05 18:43:08,974 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 293 [2022-12-05 18:43:08,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 317 transitions, 1110 flow. Second operand has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:08,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:08,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 293 [2022-12-05 18:43:08,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:09,815 INFO L130 PetriNetUnfolder]: 530/2097 cut-off events. [2022-12-05 18:43:09,816 INFO L131 PetriNetUnfolder]: For 4686/4750 co-relation queries the response was YES. [2022-12-05 18:43:09,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 2097 events. 530/2097 cut-off events. For 4686/4750 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14771 event pairs, 80 based on Foata normal form. 14/2009 useless extension candidates. Maximal degree in co-relation 5377. Up to 344 conditions per place. [2022-12-05 18:43:09,829 INFO L137 encePairwiseOnDemand]: 275/293 looper letters, 59 selfloop transitions, 10 changer transitions 105/388 dead transitions. [2022-12-05 18:43:09,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 388 transitions, 1787 flow [2022-12-05 18:43:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-05 18:43:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-05 18:43:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5612 transitions. [2022-12-05 18:43:09,834 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.79806598407281 [2022-12-05 18:43:09,834 INFO L175 Difference]: Start difference. First operand has 419 places, 317 transitions, 1110 flow. Second operand 24 states and 5612 transitions. [2022-12-05 18:43:09,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 388 transitions, 1787 flow [2022-12-05 18:43:09,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 388 transitions, 1612 flow, removed 48 selfloop flow, removed 28 redundant places. [2022-12-05 18:43:09,852 INFO L231 Difference]: Finished difference. Result has 390 places, 275 transitions, 772 flow [2022-12-05 18:43:09,852 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=390, PETRI_TRANSITIONS=275} [2022-12-05 18:43:09,853 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 111 predicate places. [2022-12-05 18:43:09,853 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 275 transitions, 772 flow [2022-12-05 18:43:09,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 230.94117647058823) internal successors, (3926), 17 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:43:09,853 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:09,853 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] [2022-12-05 18:43:09,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 18:43:09,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1283268319, now seen corresponding path program 1 times [2022-12-05 18:43:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:09,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627306406] [2022-12-05 18:43:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:09,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:09,925 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 18:43:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:09,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627306406] [2022-12-05 18:43:09,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627306406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:09,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:09,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:43:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853378258] [2022-12-05 18:43:09,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:09,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:43:09,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:43:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:43:09,927 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 293 [2022-12-05 18:43:09,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 275 transitions, 772 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 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 18:43:09,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:09,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 293 [2022-12-05 18:43:09,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:09,982 INFO L130 PetriNetUnfolder]: 26/377 cut-off events. [2022-12-05 18:43:09,983 INFO L131 PetriNetUnfolder]: For 418/422 co-relation queries the response was YES. [2022-12-05 18:43:09,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 377 events. 26/377 cut-off events. For 418/422 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 542 event pairs, 14 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 693. Up to 30 conditions per place. [2022-12-05 18:43:09,985 INFO L137 encePairwiseOnDemand]: 290/293 looper letters, 12 selfloop transitions, 2 changer transitions 2/274 dead transitions. [2022-12-05 18:43:09,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 274 transitions, 796 flow [2022-12-05 18:43:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:43:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:43:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2022-12-05 18:43:09,986 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9431171786120591 [2022-12-05 18:43:09,986 INFO L175 Difference]: Start difference. First operand has 390 places, 275 transitions, 772 flow. Second operand 3 states and 829 transitions. [2022-12-05 18:43:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 274 transitions, 796 flow [2022-12-05 18:43:09,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 274 transitions, 688 flow, removed 28 selfloop flow, removed 36 redundant places. [2022-12-05 18:43:09,991 INFO L231 Difference]: Finished difference. Result has 326 places, 272 transitions, 652 flow [2022-12-05 18:43:09,991 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=326, PETRI_TRANSITIONS=272} [2022-12-05 18:43:09,991 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, 47 predicate places. [2022-12-05 18:43:09,991 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 272 transitions, 652 flow [2022-12-05 18:43:09,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 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 18:43:09,992 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:43:09,992 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] [2022-12-05 18:43:09,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 18:43:09,992 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 18:43:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:43:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1926244056, now seen corresponding path program 1 times [2022-12-05 18:43:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:43:09,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437167831] [2022-12-05 18:43:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:43:09,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:43:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:43:10,080 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 18:43:10,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:43:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437167831] [2022-12-05 18:43:10,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437167831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:43:10,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:43:10,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:43:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121264531] [2022-12-05 18:43:10,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:43:10,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:43:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:43:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:43:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:43:10,082 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 293 [2022-12-05 18:43:10,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 272 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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 18:43:10,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:43:10,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 293 [2022-12-05 18:43:10,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:43:10,096 INFO L130 PetriNetUnfolder]: 2/216 cut-off events. [2022-12-05 18:43:10,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:43:10,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 216 events. 2/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 230. Up to 5 conditions per place. [2022-12-05 18:43:10,096 INFO L137 encePairwiseOnDemand]: 291/293 looper letters, 0 selfloop transitions, 0 changer transitions 216/216 dead transitions. [2022-12-05 18:43:10,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 216 transitions, 456 flow [2022-12-05 18:43:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:43:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:43:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2022-12-05 18:43:10,097 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9488054607508533 [2022-12-05 18:43:10,097 INFO L175 Difference]: Start difference. First operand has 326 places, 272 transitions, 652 flow. Second operand 3 states and 834 transitions. [2022-12-05 18:43:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 216 transitions, 456 flow [2022-12-05 18:43:10,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 216 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 18:43:10,099 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-12-05 18:43:10,099 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-12-05 18:43:10,100 INFO L294 CegarLoopForPetriNet]: 279 programPoint places, -36 predicate places. [2022-12-05 18:43:10,100 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-12-05 18:43:10,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 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 18:43:10,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-05 18:43:10,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 18:43:10,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-05 18:43:10,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-05 18:43:10,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-05 18:43:10,103 INFO L458 BasicCegarLoop]: Path program histogram: [13, 6, 1, 1, 1] [2022-12-05 18:43:10,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 18:43:10,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 18:43:10,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 06:43:10 BasicIcfg [2022-12-05 18:43:10,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 18:43:10,110 INFO L158 Benchmark]: Toolchain (without parser) took 58135.75ms. Allocated memory was 205.5MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 170.3MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 408.5MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory was 182.3MB in the beginning and 182.3MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6424.82ms. Allocated memory was 205.5MB in the beginning and 325.1MB in the end (delta: 119.5MB). Free memory was 169.8MB in the beginning and 247.3MB in the end (delta: -77.5MB). Peak memory consumption was 125.4MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.42ms. Allocated memory is still 325.1MB. Free memory was 247.3MB in the beginning and 238.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: Boogie Preprocessor took 40.09ms. Allocated memory is still 325.1MB. Free memory was 238.5MB in the beginning and 234.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: RCFGBuilder took 751.85ms. Allocated memory is still 325.1MB. Free memory was 234.3MB in the beginning and 193.9MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,111 INFO L158 Benchmark]: TraceAbstraction took 50804.59ms. Allocated memory was 325.1MB in the beginning and 2.2GB in the end (delta: 1.8GB). Free memory was 193.4MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 312.0MB. Max. memory is 8.0GB. [2022-12-05 18:43:10,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory was 182.3MB in the beginning and 182.3MB in the end (delta: 76.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 6424.82ms. Allocated memory was 205.5MB in the beginning and 325.1MB in the end (delta: 119.5MB). Free memory was 169.8MB in the beginning and 247.3MB in the end (delta: -77.5MB). Peak memory consumption was 125.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 108.42ms. Allocated memory is still 325.1MB. Free memory was 247.3MB in the beginning and 238.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.09ms. Allocated memory is still 325.1MB. Free memory was 238.5MB in the beginning and 234.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 751.85ms. Allocated memory is still 325.1MB. Free memory was 234.3MB in the beginning and 193.9MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 50804.59ms. Allocated memory was 325.1MB in the beginning and 2.2GB in the end (delta: 1.8GB). Free memory was 193.4MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 312.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 370 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 50.7s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5610 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5610 mSDsluCounter, 12887 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11233 mSDsCounter, 148 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14083 IncrementalHoareTripleChecker+Invalid, 14231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 148 mSolverCounterUnsat, 1654 mSDtfsCounter, 14083 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 774 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 721 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4510 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2513occurred in iteration=8, InterpolantAutomatonStates: 545, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 4730 NumberOfCodeBlocks, 4730 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 4708 ConstructedInterpolants, 0 QuantifiedInterpolants, 25092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 18:43:10,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...