./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b61dd6293576613fe76a1f6c7de40e10adddf0336817b3530deb76123c32b759 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:24:51,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:24:51,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:24:51,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:24:51,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:24:51,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:24:51,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:24:51,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:24:51,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:24:51,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:24:51,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:24:51,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:24:51,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:24:51,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:24:51,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:24:51,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:24:51,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:24:51,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:24:51,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:24:51,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:24:51,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:24:51,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:24:51,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:24:51,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:24:51,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:24:51,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:24:51,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:24:51,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:24:51,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:24:51,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:24:51,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:24:51,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:24:51,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:24:51,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:24:51,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:24:51,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:24:51,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:24:51,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:24:51,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:24:51,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:24:51,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:24:51,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:24:51,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:24:51,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:24:51,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:24:51,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:24:51,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:24:51,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:24:51,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:24:51,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:24:51,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:24:51,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:24:51,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:24:51,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:24:51,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:24:51,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:24:51,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:24:51,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:24:51,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:24:51,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:24:51,835 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:24:51,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:24:51,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:24:51,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:24:51,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:24:51,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:24:51,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:24:51,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:24:51,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:24:51,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:24:51,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:24:51,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:24:51,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:24:51,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:24:51,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:24:51,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:24:51,838 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:24:51,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:24:51,839 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b61dd6293576613fe76a1f6c7de40e10adddf0336817b3530deb76123c32b759 [2022-11-25 17:24:52,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:24:52,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:24:52,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:24:52,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:24:52,174 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:24:52,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i [2022-11-25 17:24:55,181 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:24:55,683 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:24:55,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i [2022-11-25 17:24:55,757 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/data/bd3baaf14/97ef0ea87921462583a3d76060092f27/FLAGda59295cc [2022-11-25 17:24:55,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/data/bd3baaf14/97ef0ea87921462583a3d76060092f27 [2022-11-25 17:24:55,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:24:55,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:24:55,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:24:55,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:24:55,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:24:55,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:55" (1/1) ... [2022-11-25 17:24:55,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa4fc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:55, skipping insertion in model container [2022-11-25 17:24:55,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:55" (1/1) ... [2022-11-25 17:24:55,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:24:55,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:24:56,359 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i[5469,5482] [2022-11-25 17:24:56,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:56,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:56,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:56,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:56,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:56,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:56,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:56,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:56,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:56,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:24:57,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:24:57,793 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 17:24:57,799 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:24:57,805 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:24:57,815 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:24:57,972 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:24:57,980 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:24:58,166 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 17:24:58,478 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:24:58,488 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:24:58,585 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 17:24:58,590 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 17:24:58,993 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 17:24:58,998 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 17:24:59,002 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 17:24:59,139 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 17:24:59,140 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:24:59,144 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 17:24:59,145 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:24:59,368 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 17:24:59,414 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 17:24:59,649 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 17:24:59,654 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 17:24:59,885 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 17:25:00,134 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 17:25:00,134 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 17:25:00,134 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 17:25:01,244 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 17:25:01,245 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:01,253 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:01,260 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:01,272 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:01,952 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 17:25:01,958 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 17:25:01,963 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 17:25:01,973 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 17:25:01,974 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 17:25:01,978 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 17:25:02,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:02,023 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:25:02,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_nvram_llseek_write_nvram.i[5469,5482] [2022-11-25 17:25:02,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:25:02,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:25:02,092 WARN L623 FunctionHandler]: Unknown extern function cpu_relax [2022-11-25 17:25:02,093 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:25:02,093 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:25:02,094 WARN L623 FunctionHandler]: Unknown extern function smp_rmb [2022-11-25 17:25:02,100 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:25:02,101 WARN L623 FunctionHandler]: Unknown extern function set_normalized_timespec [2022-11-25 17:25:02,104 WARN L623 FunctionHandler]: Unknown extern function __iter_div_u64_rem [2022-11-25 17:25:02,127 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:25:02,128 WARN L623 FunctionHandler]: Unknown extern function atomic_add_unless [2022-11-25 17:25:02,131 WARN L623 FunctionHandler]: Unknown extern function kobject_get [2022-11-25 17:25:02,131 WARN L623 FunctionHandler]: Unknown extern function kobject_put [2022-11-25 17:25:02,142 WARN L623 FunctionHandler]: Unknown extern function bit_spin_lock [2022-11-25 17:25:02,143 WARN L623 FunctionHandler]: Unknown extern function __bit_spin_unlock [2022-11-25 17:25:02,143 WARN L623 FunctionHandler]: Unknown extern function bit_spin_is_locked [2022-11-25 17:25:02,148 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-11-25 17:25:02,150 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:25:02,150 WARN L623 FunctionHandler]: Unknown extern function d_instantiate_unique [2022-11-25 17:25:02,150 WARN L623 FunctionHandler]: Unknown extern function d_rehash [2022-11-25 17:25:02,162 WARN L623 FunctionHandler]: Unknown extern function timespec_trunc [2022-11-25 17:25:02,219 WARN L623 FunctionHandler]: Unknown extern function __tty_alloc_driver [2022-11-25 17:25:02,224 WARN L623 FunctionHandler]: Unknown extern function llist_add_batch [2022-11-25 17:25:02,225 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 17:25:02,232 WARN L623 FunctionHandler]: Unknown extern function tty_termios_baud_rate [2022-11-25 17:25:02,236 WARN L623 FunctionHandler]: Unknown extern function tty_unlock [2022-11-25 17:25:02,237 WARN L623 FunctionHandler]: Unknown extern function tty_wait_until_sent [2022-11-25 17:25:02,237 WARN L623 FunctionHandler]: Unknown extern function tty_lock [2022-11-25 17:25:02,550 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-25 17:25:02,551 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:02,555 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:02,562 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:02,566 WARN L623 FunctionHandler]: Unknown extern function ____ilog2_NaN [2022-11-25 17:25:02,621 WARN L623 FunctionHandler]: Unknown extern function nvram_read_byte [2022-11-25 17:25:02,624 WARN L623 FunctionHandler]: Unknown extern function nvram_write_byte [2022-11-25 17:25:02,626 WARN L623 FunctionHandler]: Unknown extern function nvram_sync [2022-11-25 17:25:02,629 WARN L623 FunctionHandler]: Unknown extern function misc_register [2022-11-25 17:25:02,629 WARN L623 FunctionHandler]: Unknown extern function nvram_get_size [2022-11-25 17:25:02,630 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2022-11-25 17:25:02,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:03,371 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:25:03,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03 WrapperNode [2022-11-25 17:25:03,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:03,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:25:03,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:25:03,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:25:03,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,546 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 15, statements flattened = 318 [2022-11-25 17:25:03,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:25:03,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:25:03,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:25:03,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:25:03,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:25:03,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:25:03,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:25:03,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:25:03,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (1/1) ... [2022-11-25 17:25:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:25:03,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:25:03,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:25:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:25:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:25:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:25:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:25:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:25:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 17:25:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2022-11-25 17:25:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:25:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_llseek [2022-11-25 17:25:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_llseek [2022-11-25 17:25:03,731 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:25:04,209 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:25:04,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:25:04,643 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:25:04,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:25:04,654 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:25:04,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:04 BoogieIcfgContainer [2022-11-25 17:25:04,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:25:04,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:25:04,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:25:04,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:25:04,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:24:55" (1/3) ... [2022-11-25 17:25:04,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43f3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:04, skipping insertion in model container [2022-11-25 17:25:04,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:03" (2/3) ... [2022-11-25 17:25:04,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d43f3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:04, skipping insertion in model container [2022-11-25 17:25:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:04" (3/3) ... [2022-11-25 17:25:04,666 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_nvram_llseek_write_nvram.i [2022-11-25 17:25:04,675 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:25:04,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:25:04,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 17:25:04,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:25:04,779 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:25:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 373 transitions, 762 flow [2022-11-25 17:25:05,019 INFO L130 PetriNetUnfolder]: 15/371 cut-off events. [2022-11-25 17:25:05,020 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:25:05,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 371 events. 15/371 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 297. Up to 5 conditions per place. [2022-11-25 17:25:05,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 373 transitions, 762 flow [2022-11-25 17:25:05,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 362 transitions, 733 flow [2022-11-25 17:25:05,048 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:25:05,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 362 transitions, 733 flow [2022-11-25 17:25:05,080 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 362 transitions, 733 flow [2022-11-25 17:25:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 362 transitions, 733 flow [2022-11-25 17:25:05,217 INFO L130 PetriNetUnfolder]: 15/362 cut-off events. [2022-11-25 17:25:05,217 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:25:05,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 362 events. 15/362 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 360 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 297. Up to 5 conditions per place. [2022-11-25 17:25:05,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 13830 [2022-11-25 17:26:44,405 WARN L233 SmtUtils]: Spent 34.78s on a formula simplification that was a NOOP. DAG size: 500 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:27:12,258 WARN L233 SmtUtils]: Spent 27.83s on a formula simplification that was a NOOP. DAG size: 424 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:28:23,373 WARN L233 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 506 DAG size of output: 504 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:28:38,618 WARN L233 SmtUtils]: Spent 15.21s on a formula simplification that was a NOOP. DAG size: 427 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:32:41,610 WARN L233 SmtUtils]: Spent 4.05m on a formula simplification. DAG size of input: 522 DAG size of output: 515 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:34:19,687 WARN L233 SmtUtils]: Spent 1.63m on a formula simplification that was a NOOP. DAG size: 501 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:36:04,462 WARN L233 SmtUtils]: Spent 1.75m on a formula simplification. DAG size of input: 535 DAG size of output: 528 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:02,833 WARN L233 SmtUtils]: Spent 1.97m on a formula simplification that was a NOOP. DAG size: 514 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:38:02,837 INFO L134 LiptonReduction]: Checked pairs total: 14374 [2022-11-25 17:38:02,837 INFO L136 LiptonReduction]: Total number of compositions: 420 [2022-11-25 17:38:02,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:38:02,859 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2883d182, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:38:02,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 17:38:02,870 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-11-25 17:38:02,871 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:38:02,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:02,872 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:38:02,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_nvram_llseekErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-25 17:38:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1343363247, now seen corresponding path program 1 times [2022-11-25 17:38:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351407790] [2022-11-25 17:38:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:04,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351407790] [2022-11-25 17:38:04,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351407790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:04,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:04,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574065826] [2022-11-25 17:38:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:04,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:04,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:04,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 793 [2022-11-25 17:38:04,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 359.6666666666667) internal successors, (1079), 3 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:04,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:04,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 793 [2022-11-25 17:38:04,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:04,523 INFO L130 PetriNetUnfolder]: 183/290 cut-off events. [2022-11-25 17:38:04,524 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-25 17:38:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 290 events. 183/290 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 928 event pairs, 117 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 522. Up to 290 conditions per place. [2022-11-25 17:38:04,526 INFO L137 encePairwiseOnDemand]: 791/793 looper letters, 16 selfloop transitions, 1 changer transitions 5/22 dead transitions. [2022-11-25 17:38:04,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 97 flow [2022-11-25 17:38:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1097 transitions. [2022-11-25 17:38:04,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46111811685582177 [2022-11-25 17:38:04,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1097 transitions. [2022-11-25 17:38:04,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1097 transitions. [2022-11-25 17:38:04,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:04,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1097 transitions. [2022-11-25 17:38:04,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:04,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 793.0) internal successors, (3172), 4 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:04,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 793.0) internal successors, (3172), 4 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:04,576 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 55 flow. Second operand 3 states and 1097 transitions. [2022-11-25 17:38:04,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 97 flow [2022-11-25 17:38:04,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:38:04,582 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 40 flow [2022-11-25 17:38:04,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=793, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2022-11-25 17:38:04,588 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-11-25 17:38:04,588 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 40 flow [2022-11-25 17:38:04,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 359.6666666666667) internal successors, (1079), 3 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:04,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:04,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:38:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:38:04,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-25 17:38:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1343363260, now seen corresponding path program 1 times [2022-11-25 17:38:04,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:04,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096339188] [2022-11-25 17:38:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:38:04,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:38:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:38:04,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:38:04,809 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:38:04,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-11-25 17:38:04,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2022-11-25 17:38:04,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 10 remaining) [2022-11-25 17:38:04,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 17:38:04,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 17:38:04,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 17:38:04,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 17:38:04,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 17:38:04,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 17:38:04,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location whoop_wrapper_nvram_llseekErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-25 17:38:04,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:38:04,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:38:04,823 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:38:04,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:38:04,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:38:04 BasicIcfg [2022-11-25 17:38:04,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:38:04,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:38:04,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:38:04,874 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:38:04,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:04" (3/4) ... [2022-11-25 17:38:04,877 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:38:04,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:38:04,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:38:04,958 INFO L158 Benchmark]: Toolchain (without parser) took 789180.90ms. Allocated memory was 178.3MB in the beginning and 264.2MB in the end (delta: 86.0MB). Free memory was 135.8MB in the beginning and 146.2MB in the end (delta: -10.4MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,958 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:38:04,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 7594.01ms. Allocated memory was 178.3MB in the beginning and 220.2MB in the end (delta: 41.9MB). Free memory was 135.8MB in the beginning and 96.6MB in the end (delta: 39.3MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 174.30ms. Allocated memory is still 220.2MB. Free memory was 95.5MB in the beginning and 86.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,963 INFO L158 Benchmark]: Boogie Preprocessor took 70.97ms. Allocated memory is still 220.2MB. Free memory was 86.1MB in the beginning and 154.2MB in the end (delta: -68.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,966 INFO L158 Benchmark]: RCFGBuilder took 1037.41ms. Allocated memory is still 220.2MB. Free memory was 154.2MB in the beginning and 113.4MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,966 INFO L158 Benchmark]: TraceAbstraction took 780213.86ms. Allocated memory was 220.2MB in the beginning and 264.2MB in the end (delta: 44.0MB). Free memory was 112.3MB in the beginning and 154.6MB in the end (delta: -42.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,967 INFO L158 Benchmark]: Witness Printer took 83.54ms. Allocated memory is still 264.2MB. Free memory was 154.6MB in the beginning and 146.2MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 17:38:04,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 7594.01ms. Allocated memory was 178.3MB in the beginning and 220.2MB in the end (delta: 41.9MB). Free memory was 135.8MB in the beginning and 96.6MB in the end (delta: 39.3MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 174.30ms. Allocated memory is still 220.2MB. Free memory was 95.5MB in the beginning and 86.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.97ms. Allocated memory is still 220.2MB. Free memory was 86.1MB in the beginning and 154.2MB in the end (delta: -68.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1037.41ms. Allocated memory is still 220.2MB. Free memory was 154.2MB in the beginning and 113.4MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 780213.86ms. Allocated memory was 220.2MB in the beginning and 264.2MB in the end (delta: 44.0MB). Free memory was 112.3MB in the beginning and 154.6MB in the end (delta: -42.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 83.54ms. Allocated memory is still 264.2MB. Free memory was 154.6MB in the beginning and 146.2MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 777.8s, 354 PlacesBefore, 26 PlacesAfterwards, 362 TransitionsBefore, 23 TransitionsAfterwards, 13830 CoEnabledTransitionPairs, 10 FixpointIterations, 195 TrivialSequentialCompositions, 166 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 30 ConcurrentYvCompositions, 11 ChoiceCompositions, 420 TotalNumberOfCompositions, 14374 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12581, independent: 12461, independent conditional: 0, independent unconditional: 12461, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10088, independent: 10045, independent conditional: 0, independent unconditional: 10045, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10088, independent: 10029, independent conditional: 0, independent unconditional: 10029, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 59, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4518, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 4226, unknown conditional: 0, unknown unconditional: 4226] ], Cache Queries: [ total: 12581, independent: 2416, independent conditional: 0, independent unconditional: 2416, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 10089, unknown conditional: 0, unknown unconditional: 10089] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2 - CounterExampleResult [Line: 6694]: integer overflow possible integer overflow possible We found a FailurePath: [L246] 0 unsigned long jiffies; [L6519] 0 const unsigned int default_alloc_size = 4; [L6686] 0 static struct mutex nvram_mutex = { 1, 0 }; [L6687] 0 static ssize_t nvram_len; [L6762-L6768] 0 struct file_operations nvram_fops = { .owner = ((struct module *)0), .llseek = nvram_llseek, .read = read_nvram, .write = write_nvram, .unlocked_ioctl = nvram_unlocked_ioctl, }; [L6769-L6773] 0 static struct miscdevice nvram_dev = { 144, "nvram", &nvram_fops }; [L6792] 0 int (* _whoop_init)(void) = nvram_init; [L6793] 0 void (* _whoop_exit)(void) = nvram_cleanup; [L6794] 0 struct inode *whoop_inode_0; [L6795] 0 struct file *whoop_file_0; [L6796] 0 struct inode *whoop_inode_1; [L6797] 0 struct file *whoop_file_1; [L6798] 0 struct inode *whoop_inode_2; [L6799] 0 struct file *whoop_file_2; [L6800] 0 struct inode *whoop_inode_3; [L6801] 0 struct file *whoop_file_3; [L6802] 0 struct inode *whoop_inode_4; [L6803] 0 struct file *whoop_file_4; [L6804] 0 struct pci_dev *whoop_pci_dev; [L6805] 0 char *whoop_buf; [L6806] 0 struct platform_device *whoop_platform_device; [L6807] 0 struct vm_area_struct *whoop_vm_area_struct; [L6808] 0 struct cx_dev *whoop_cx_dev; [L6809] 0 poll_table *whoop_poll_table; [L6810] 0 loff_t *whoop_loff_t; [L6811] 0 int whoop_int; [L6839] 0 whoop_inode_0 = (struct inode *) malloc(sizeof(struct inode)) [L6840] 0 whoop_file_0 = (struct file *) malloc(sizeof(struct file)) [L6841] 0 whoop_inode_1 = (struct inode *) malloc(sizeof(struct inode)) [L6842] 0 whoop_file_1 = (struct file *) malloc(sizeof(struct file)) [L6843] 0 whoop_inode_2 = (struct inode *) malloc(sizeof(struct inode)) [L6844] 0 whoop_file_2 = (struct file *) malloc(sizeof(struct file)) [L6845] 0 whoop_inode_3 = (struct inode *) malloc(sizeof(struct inode)) [L6846] 0 whoop_file_3 = (struct file *) malloc(sizeof(struct file)) [L6847] 0 whoop_inode_4 = (struct inode *) malloc(sizeof(struct inode)) [L6848] 0 whoop_file_4 = (struct file *) malloc(sizeof(struct file)) [L6849] 0 whoop_pci_dev = (struct pci_dev *) malloc(sizeof(struct pci_dev)) [L6850] 0 whoop_buf = (char *) malloc(sizeof(char)) [L6851] 0 whoop_platform_device = (struct platform_device *) malloc(sizeof(struct platform_device)) [L6852] 0 whoop_vm_area_struct = (struct vm_area_struct *) malloc(sizeof(struct vm_area_struct)) [L6853] 0 whoop_cx_dev = (struct cx_dev *) malloc(sizeof(struct cx_dev)) [L6854] 0 whoop_poll_table = (poll_table *) malloc(sizeof(poll_table)) [L6855] 0 whoop_loff_t = (loff_t *) malloc(sizeof(loff_t)) [L6856] 0 whoop_int = __VERIFIER_nondet_int() [L6857] CALL 0 assume_abort_if_not(whoop_int >= 0) [L170] COND FALSE 0 !(!cond) [L6857] RET 0 assume_abort_if_not(whoop_int >= 0) [L6858] CALL, EXPR 0 _whoop_init() [L6776] 0 int ret = 0; [L6777-L6778] CALL 0 printk("\001" "6" "Generic non-volatile memory driver v%s\n", "1.1") [L6647] 0 return __VERIFIER_nondet_int(); [L6777-L6778] RET 0 printk("\001" "6" "Generic non-volatile memory driver v%s\n", "1.1") [L6779] CALL, EXPR 0 misc_register(&nvram_dev) [L6621] 0 return __VERIFIER_nondet_int(); [L6779] RET, EXPR 0 misc_register(&nvram_dev) [L6779] 0 ret = misc_register(&nvram_dev) [L6780] COND TRUE 0 ret != 0 [L6786] 0 return ret; [L6858] RET, EXPR 0 _whoop_init() [L6858] 0 int _whoop_init_result = _whoop_init(); [L6859] 0 pthread_t pthread_t_write_nvram; [L6860] 0 pthread_t pthread_t_nvram_llseek; [L6861] FCALL, FORK 0 pthread_create(&pthread_t_write_nvram, ((void *)0), whoop_wrapper_write_nvram, ((void *)0)) VAL [={-1:4}, ={-1:5}, _whoop_init_result=15, default_alloc_size=4, jiffies=0, nvram_dev={9:0}, nvram_fops={8:0}, nvram_len=0, nvram_mutex={7:0}, pthread_create(&pthread_t_write_nvram, ((void *)0), whoop_wrapper_write_nvram, ((void *)0))=13, pthread_t_nvram_llseek={10:0}, pthread_t_write_nvram={11:0}, whoop_buf={-19:0}, whoop_cx_dev={-7:0}, whoop_file_0={-16:0}, whoop_file_1={-18:0}, whoop_file_2={-8:0}, whoop_file_3={-3:0}, whoop_file_4={-13:0}, whoop_inode_0={-11:0}, whoop_inode_1={-10:0}, whoop_inode_2={-12:0}, whoop_inode_3={-17:0}, whoop_inode_4={-15:0}, whoop_int=1, whoop_loff_t={-4:0}, whoop_pci_dev={-5:0}, whoop_platform_device={-6:0}, whoop_poll_table={-14:0}, whoop_vm_area_struct={-9:0}] [L6862] FCALL, FORK 0 pthread_create(&pthread_t_nvram_llseek, ((void *)0), whoop_wrapper_nvram_llseek, ((void *)0)) VAL [={-1:4}, ={-1:5}, _whoop_init_result=15, default_alloc_size=4, jiffies=0, nvram_dev={9:0}, nvram_fops={8:0}, nvram_len=0, nvram_mutex={7:0}, pthread_create(&pthread_t_nvram_llseek, ((void *)0), whoop_wrapper_nvram_llseek, ((void *)0))=14, pthread_t_nvram_llseek={10:0}, pthread_t_write_nvram={11:0}, whoop_buf={-19:0}, whoop_cx_dev={-7:0}, whoop_file_0={-16:0}, whoop_file_1={-18:0}, whoop_file_2={-8:0}, whoop_file_3={-3:0}, whoop_file_4={-13:0}, whoop_inode_0={-11:0}, whoop_inode_1={-10:0}, whoop_inode_2={-12:0}, whoop_inode_3={-17:0}, whoop_inode_4={-15:0}, whoop_int=1, whoop_loff_t={-4:0}, whoop_pci_dev={-5:0}, whoop_platform_device={-6:0}, whoop_poll_table={-14:0}, whoop_vm_area_struct={-9:0}] [L6829] CALL 2 nvram_llseek(whoop_file_3, __VERIFIER_nondet_long(), whoop_int) [L6691] 2 case 0: [L6693] 2 case 1: [L6694] EXPR 2 file->f_pos [L6694] 2 offset += file->f_pos VAL [={-1:5}, ={-1:4}, \old(offset)=0, \old(origin)=1, default_alloc_size=4, file={-3:0}, file={-3:0}, file->f_pos=-9223372036854775809, jiffies=0, nvram_dev={9:0}, nvram_fops={8:0}, nvram_len=0, nvram_mutex={7:0}, offset=0, origin=1, whoop_buf={-19:0}, whoop_cx_dev={-7:0}, whoop_file_0={-16:0}, whoop_file_1={-18:0}, whoop_file_2={-8:0}, whoop_file_3={-3:0}, whoop_file_4={-13:0}, whoop_inode_0={-11:0}, whoop_inode_1={-10:0}, whoop_inode_2={-12:0}, whoop_inode_3={-17:0}, whoop_inode_4={-15:0}, whoop_int=1, whoop_loff_t={-4:0}, whoop_pci_dev={-5:0}, whoop_platform_device={-6:0}, whoop_poll_table={-14:0}, whoop_vm_area_struct={-9:0}] - UnprovableResult [Line: 6861]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 6862]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 6694]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 6697]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 6697]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 506 locations, 10 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: 780.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 778.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:38:05,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59115109-ccd6-483c-b290-a52be0c2f94c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)