./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 --- 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-b5237d8 [2022-11-21 09:12:33,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:12:33,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:12:33,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:12:33,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:12:33,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:12:33,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:12:33,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:12:33,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:12:33,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:12:33,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:12:33,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:12:33,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:12:33,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:12:33,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:12:33,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:12:33,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:12:33,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:12:33,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:12:33,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:12:33,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:12:33,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:12:33,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:12:33,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:12:33,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:12:33,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:12:33,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:12:33,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:12:33,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:12:33,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:12:33,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:12:33,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:12:33,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:12:33,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:12:33,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:12:33,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:12:33,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:12:33,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:12:33,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:12:33,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:12:33,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:12:33,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:12:33,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:12:33,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:12:33,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:12:33,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:12:33,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:12:33,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:12:33,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:12:33,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:12:33,718 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:12:33,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:12:33,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:12:33,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:12:33,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:12:33,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:12:33,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:12:33,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:12:33,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:12:33,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:12:33,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:12:33,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:12:33,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:12:33,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:12:33,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:12:33,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:12:33,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:12:33,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:12:33,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:12:33,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:12:33,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:12:33,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:12:33,724 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:12:33,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:12:33,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:12:33,725 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 [2022-11-21 09:12:34,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:12:34,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:12:34,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:12:34,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:12:34,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:12:34,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2022-11-21 09:12:37,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:12:37,718 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:12:37,719 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2022-11-21 09:12:37,769 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/data/129f3d756/3c5c23cc3fe94cb6893132e57b19ea0d/FLAGa1f601814 [2022-11-21 09:12:37,787 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/data/129f3d756/3c5c23cc3fe94cb6893132e57b19ea0d [2022-11-21 09:12:37,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:12:37,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:12:37,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:12:37,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:12:37,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:12:37,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:12:37" (1/1) ... [2022-11-21 09:12:37,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157fe8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:37, skipping insertion in model container [2022-11-21 09:12:37,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:12:37" (1/1) ... [2022-11-21 09:12:37,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:12:37,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:12:38,337 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_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2022-11-21 09:12:42,097 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-21 09:12:42,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:12:42,894 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:12:42,925 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_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2022-11-21 09:12:43,501 WARN L611 FunctionHandler]: implicit declaration of function __builtin_constant_p [2022-11-21 09:12:43,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:12:44,073 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:12:44,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44 WrapperNode [2022-11-21 09:12:44,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:12:44,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:12:44,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:12:44,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:12:44,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,247 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 18, statements flattened = 348 [2022-11-21 09:12:44,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:12:44,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:12:44,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:12:44,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:12:44,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:12:44,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:12:44,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:12:44,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:12:44,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (1/1) ... [2022-11-21 09:12:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:12:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:12:44,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:12:44,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec7a5e9-8e43-4cbe-9c43-6e0119d9c5cc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:12:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:12:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:12:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:12:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:12:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:12:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 09:12:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:12:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:12:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2022-11-21 09:12:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2022-11-21 09:12:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:12:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 09:12:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2022-11-21 09:12:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2022-11-21 09:12:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:12:44,424 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:12:44,911 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:12:44,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:12:45,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:12:45,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:12:45,521 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 09:12:45,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:12:45 BoogieIcfgContainer [2022-11-21 09:12:45,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:12:45,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:12:45,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:12:45,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:12:45,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:12:37" (1/3) ... [2022-11-21 09:12:45,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a867c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:12:45, skipping insertion in model container [2022-11-21 09:12:45,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:12:44" (2/3) ... [2022-11-21 09:12:45,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a867c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:12:45, skipping insertion in model container [2022-11-21 09:12:45,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:12:45" (3/3) ... [2022-11-21 09:12:45,539 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2022-11-21 09:12:45,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:12:45,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:12:45,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 09:12:45,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:12:45,695 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 09:12:45,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 412 transitions, 840 flow [2022-11-21 09:12:45,934 INFO L130 PetriNetUnfolder]: 15/410 cut-off events. [2022-11-21 09:12:45,935 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 09:12:45,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 410 events. 15/410 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 546 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 298. Up to 4 conditions per place. [2022-11-21 09:12:45,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 412 transitions, 840 flow [2022-11-21 09:12:45,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 401 transitions, 811 flow [2022-11-21 09:12:45,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:12:45,970 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;@39f94711, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:12:45,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 09:12:46,062 INFO L130 PetriNetUnfolder]: 7/324 cut-off events. [2022-11-21 09:12:46,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 09:12:46,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:12:46,063 INFO L209 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] [2022-11-21 09:12:46,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:12:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:12:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2034253457, now seen corresponding path program 1 times [2022-11-21 09:12:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:12:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37631119] [2022-11-21 09:12:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:12:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:12:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:12:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:12:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:12:46,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37631119] [2022-11-21 09:12:46,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37631119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:12:46,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:12:46,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:12:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298810829] [2022-11-21 09:12:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:12:46,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:12:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:12:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:12:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:12:46,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 412 [2022-11-21 09:12:46,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 401 transitions, 811 flow. Second operand has 2 states, 2 states have (on average 402.0) internal successors, (804), 2 states have internal predecessors, (804), 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) [2022-11-21 09:12:46,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:12:46,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 412 [2022-11-21 09:12:46,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:12:46,920 INFO L130 PetriNetUnfolder]: 10/394 cut-off events. [2022-11-21 09:12:46,920 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 09:12:46,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 394 events. 10/394 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 6/387 useless extension candidates. Maximal degree in co-relation 295. Up to 4 conditions per place. [2022-11-21 09:12:46,926 INFO L137 encePairwiseOnDemand]: 407/412 looper letters, 3 selfloop transitions, 0 changer transitions 1/394 dead transitions. [2022-11-21 09:12:46,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 803 flow [2022-11-21 09:12:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:12:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 09:12:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 810 transitions. [2022-11-21 09:12:46,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9830097087378641 [2022-11-21 09:12:46,952 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 810 transitions. [2022-11-21 09:12:46,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 810 transitions. [2022-11-21 09:12:46,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:12:46,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 810 transitions. [2022-11-21 09:12:46,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 405.0) internal successors, (810), 2 states have internal predecessors, (810), 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) [2022-11-21 09:12:46,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 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) [2022-11-21 09:12:46,977 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 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) [2022-11-21 09:12:46,979 INFO L175 Difference]: Start difference. First operand has 393 places, 401 transitions, 811 flow. Second operand 2 states and 810 transitions. [2022-11-21 09:12:46,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 803 flow [2022-11-21 09:12:46,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 394 transitions, 798 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 09:12:47,002 INFO L231 Difference]: Finished difference. Result has 389 places, 393 transitions, 790 flow [2022-11-21 09:12:47,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=790, PETRI_PLACES=389, PETRI_TRANSITIONS=393} [2022-11-21 09:12:47,011 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, -4 predicate places. [2022-11-21 09:12:47,012 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 393 transitions, 790 flow [2022-11-21 09:12:47,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 402.0) internal successors, (804), 2 states have internal predecessors, (804), 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) [2022-11-21 09:12:47,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:12:47,013 INFO L209 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] [2022-11-21 09:12:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:12:47,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:12:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:12:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 453259376, now seen corresponding path program 1 times [2022-11-21 09:12:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:12:47,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804184194] [2022-11-21 09:12:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:12:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:12:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:12:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:12:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:12:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804184194] [2022-11-21 09:12:48,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804184194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:12:48,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:12:48,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:12:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024732401] [2022-11-21 09:12:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:12:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:12:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:12:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:12:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:12:48,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 412 [2022-11-21 09:12:48,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 393 transitions, 790 flow. Second operand has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 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) [2022-11-21 09:12:48,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:12:48,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 412 [2022-11-21 09:12:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:12:49,384 INFO L130 PetriNetUnfolder]: 548/3253 cut-off events. [2022-11-21 09:12:49,384 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-21 09:12:49,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 3253 events. 548/3253 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 26866 event pairs, 251 based on Foata normal form. 0/3059 useless extension candidates. Maximal degree in co-relation 4248. Up to 500 conditions per place. [2022-11-21 09:12:49,464 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 114 selfloop transitions, 19 changer transitions 0/475 dead transitions. [2022-11-21 09:12:49,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 475 transitions, 1243 flow [2022-11-21 09:12:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:12:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 09:12:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4371 transitions. [2022-11-21 09:12:49,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841019417475728 [2022-11-21 09:12:49,477 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4371 transitions. [2022-11-21 09:12:49,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4371 transitions. [2022-11-21 09:12:49,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:12:49,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4371 transitions. [2022-11-21 09:12:49,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 364.25) internal successors, (4371), 12 states have internal predecessors, (4371), 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) [2022-11-21 09:12:49,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 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) [2022-11-21 09:12:49,510 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 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) [2022-11-21 09:12:49,510 INFO L175 Difference]: Start difference. First operand has 389 places, 393 transitions, 790 flow. Second operand 12 states and 4371 transitions. [2022-11-21 09:12:49,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 475 transitions, 1243 flow [2022-11-21 09:12:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 475 transitions, 1243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:12:49,522 INFO L231 Difference]: Finished difference. Result has 406 places, 411 transitions, 917 flow [2022-11-21 09:12:49,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=406, PETRI_TRANSITIONS=411} [2022-11-21 09:12:49,524 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 13 predicate places. [2022-11-21 09:12:49,524 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 411 transitions, 917 flow [2022-11-21 09:12:49,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 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) [2022-11-21 09:12:49,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:12:49,526 INFO L209 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] [2022-11-21 09:12:49,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:12:49,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:12:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:12:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash -467617810, now seen corresponding path program 1 times [2022-11-21 09:12:49,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:12:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175283227] [2022-11-21 09:12:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:12:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:12:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:12:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:12:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:12:50,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175283227] [2022-11-21 09:12:50,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175283227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:12:50,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:12:50,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:12:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121702006] [2022-11-21 09:12:50,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:12:50,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:12:50,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:12:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:12:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:12:50,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 412 [2022-11-21 09:12:50,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 411 transitions, 917 flow. Second operand has 6 states, 6 states have (on average 359.3333333333333) internal successors, (2156), 6 states have internal predecessors, (2156), 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) [2022-11-21 09:12:50,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:12:50,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 412 [2022-11-21 09:12:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:12:51,466 INFO L130 PetriNetUnfolder]: 617/3799 cut-off events. [2022-11-21 09:12:51,467 INFO L131 PetriNetUnfolder]: For 731/783 co-relation queries the response was YES. [2022-11-21 09:12:51,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5777 conditions, 3799 events. 617/3799 cut-off events. For 731/783 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34925 event pairs, 330 based on Foata normal form. 0/3641 useless extension candidates. Maximal degree in co-relation 5767. Up to 709 conditions per place. [2022-11-21 09:12:51,546 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 72 selfloop transitions, 7 changer transitions 52/477 dead transitions. [2022-11-21 09:12:51,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 477 transitions, 1365 flow [2022-11-21 09:12:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:12:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 09:12:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4355 transitions. [2022-11-21 09:12:51,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808656957928802 [2022-11-21 09:12:51,560 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4355 transitions. [2022-11-21 09:12:51,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4355 transitions. [2022-11-21 09:12:51,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:12:51,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4355 transitions. [2022-11-21 09:12:51,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 362.9166666666667) internal successors, (4355), 12 states have internal predecessors, (4355), 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) [2022-11-21 09:12:51,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 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) [2022-11-21 09:12:51,592 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 412.0) internal successors, (5356), 13 states have internal predecessors, (5356), 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) [2022-11-21 09:12:51,592 INFO L175 Difference]: Start difference. First operand has 406 places, 411 transitions, 917 flow. Second operand 12 states and 4355 transitions. [2022-11-21 09:12:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 477 transitions, 1365 flow [2022-11-21 09:12:51,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1365 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:12:51,617 INFO L231 Difference]: Finished difference. Result has 426 places, 404 transitions, 927 flow [2022-11-21 09:12:51,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=927, PETRI_PLACES=426, PETRI_TRANSITIONS=404} [2022-11-21 09:12:51,619 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 33 predicate places. [2022-11-21 09:12:51,620 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 404 transitions, 927 flow [2022-11-21 09:12:51,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 359.3333333333333) internal successors, (2156), 6 states have internal predecessors, (2156), 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) [2022-11-21 09:12:51,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:12:51,621 INFO L209 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] [2022-11-21 09:12:51,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:12:51,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:12:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:12:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1493065095, now seen corresponding path program 1 times [2022-11-21 09:12:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:12:51,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751514105] [2022-11-21 09:12:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:12:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:12:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:12:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:12:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:12:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751514105] [2022-11-21 09:12:52,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751514105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:12:52,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:12:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 09:12:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249916441] [2022-11-21 09:12:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:12:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:12:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:12:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:12:52,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:12:52,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 412 [2022-11-21 09:12:53,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 404 transitions, 927 flow. Second operand has 12 states, 12 states have (on average 330.1666666666667) internal successors, (3962), 12 states have internal predecessors, (3962), 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) [2022-11-21 09:12:53,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:12:53,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 412 [2022-11-21 09:12:53,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:12:54,488 INFO L130 PetriNetUnfolder]: 543/2923 cut-off events. [2022-11-21 09:12:54,488 INFO L131 PetriNetUnfolder]: For 1904/1913 co-relation queries the response was YES. [2022-11-21 09:12:54,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 2923 events. 543/2923 cut-off events. For 1904/1913 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22388 event pairs, 41 based on Foata normal form. 15/2842 useless extension candidates. Maximal degree in co-relation 4893. Up to 390 conditions per place. [2022-11-21 09:12:54,513 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 118 selfloop transitions, 18 changer transitions 27/481 dead transitions. [2022-11-21 09:12:54,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 481 transitions, 1582 flow [2022-11-21 09:12:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:12:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 09:12:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6008 transitions. [2022-11-21 09:12:54,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8101402373247033 [2022-11-21 09:12:54,527 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6008 transitions. [2022-11-21 09:12:54,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6008 transitions. [2022-11-21 09:12:54,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:12:54,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6008 transitions. [2022-11-21 09:12:54,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 333.77777777777777) internal successors, (6008), 18 states have internal predecessors, (6008), 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) [2022-11-21 09:12:54,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 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) [2022-11-21 09:12:54,582 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 412.0) internal successors, (7828), 19 states have internal predecessors, (7828), 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) [2022-11-21 09:12:54,582 INFO L175 Difference]: Start difference. First operand has 426 places, 404 transitions, 927 flow. Second operand 18 states and 6008 transitions. [2022-11-21 09:12:54,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 481 transitions, 1582 flow [2022-11-21 09:12:54,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 481 transitions, 1562 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-21 09:12:54,607 INFO L231 Difference]: Finished difference. Result has 437 places, 408 transitions, 1028 flow [2022-11-21 09:12:54,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1028, PETRI_PLACES=437, PETRI_TRANSITIONS=408} [2022-11-21 09:12:54,615 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 44 predicate places. [2022-11-21 09:12:54,615 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 408 transitions, 1028 flow [2022-11-21 09:12:54,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 330.1666666666667) internal successors, (3962), 12 states have internal predecessors, (3962), 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) [2022-11-21 09:12:54,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:12:54,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:12:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:12:54,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:12:54,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:12:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -391428232, now seen corresponding path program 1 times [2022-11-21 09:12:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:12:54,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112314666] [2022-11-21 09:12:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:12:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:12:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:12:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:12:58,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:12:58,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112314666] [2022-11-21 09:12:58,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112314666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:12:58,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:12:58,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 09:12:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067908042] [2022-11-21 09:12:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:12:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:12:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:12:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:12:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:12:58,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 412 [2022-11-21 09:12:58,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 408 transitions, 1028 flow. Second operand has 18 states, 18 states have (on average 327.1666666666667) internal successors, (5889), 18 states have internal predecessors, (5889), 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) [2022-11-21 09:12:58,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:12:58,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 412 [2022-11-21 09:12:58,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:13:08,516 INFO L130 PetriNetUnfolder]: 5032/17191 cut-off events. [2022-11-21 09:13:08,517 INFO L131 PetriNetUnfolder]: For 17423/17423 co-relation queries the response was YES. [2022-11-21 09:13:08,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33108 conditions, 17191 events. 5032/17191 cut-off events. For 17423/17423 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 183779 event pairs, 1864 based on Foata normal form. 6/16433 useless extension candidates. Maximal degree in co-relation 33084. Up to 2508 conditions per place. [2022-11-21 09:13:08,698 INFO L137 encePairwiseOnDemand]: 383/412 looper letters, 449 selfloop transitions, 92 changer transitions 258/1113 dead transitions. [2022-11-21 09:13:08,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1113 transitions, 5039 flow [2022-11-21 09:13:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-21 09:13:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-21 09:13:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 22512 transitions. [2022-11-21 09:13:08,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155339805825242 [2022-11-21 09:13:08,750 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 22512 transitions. [2022-11-21 09:13:08,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 22512 transitions. [2022-11-21 09:13:08,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:13:08,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 22512 transitions. [2022-11-21 09:13:08,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 336.0) internal successors, (22512), 67 states have internal predecessors, (22512), 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) [2022-11-21 09:13:08,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 412.0) internal successors, (28016), 68 states have internal predecessors, (28016), 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) [2022-11-21 09:13:08,894 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 412.0) internal successors, (28016), 68 states have internal predecessors, (28016), 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) [2022-11-21 09:13:08,894 INFO L175 Difference]: Start difference. First operand has 437 places, 408 transitions, 1028 flow. Second operand 67 states and 22512 transitions. [2022-11-21 09:13:08,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1113 transitions, 5039 flow [2022-11-21 09:13:09,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1113 transitions, 4910 flow, removed 28 selfloop flow, removed 11 redundant places. [2022-11-21 09:13:09,132 INFO L231 Difference]: Finished difference. Result has 546 places, 490 transitions, 2064 flow [2022-11-21 09:13:09,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=2064, PETRI_PLACES=546, PETRI_TRANSITIONS=490} [2022-11-21 09:13:09,133 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 153 predicate places. [2022-11-21 09:13:09,133 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 490 transitions, 2064 flow [2022-11-21 09:13:09,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.1666666666667) internal successors, (5889), 18 states have internal predecessors, (5889), 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) [2022-11-21 09:13:09,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:13:09,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:13:09,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:13:09,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:13:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:13:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 830672144, now seen corresponding path program 2 times [2022-11-21 09:13:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:13:09,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801714338] [2022-11-21 09:13:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:13:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:13:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:13:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:13:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:13:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801714338] [2022-11-21 09:13:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801714338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:13:12,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:13:12,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 09:13:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571023087] [2022-11-21 09:13:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:13:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:13:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:13:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:13:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:13:12,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 412 [2022-11-21 09:13:12,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 490 transitions, 2064 flow. Second operand has 18 states, 18 states have (on average 327.1666666666667) internal successors, (5889), 18 states have internal predecessors, (5889), 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) [2022-11-21 09:13:12,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:13:12,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 412 [2022-11-21 09:13:12,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:13:22,302 INFO L130 PetriNetUnfolder]: 5457/18360 cut-off events. [2022-11-21 09:13:22,302 INFO L131 PetriNetUnfolder]: For 103056/103098 co-relation queries the response was YES. [2022-11-21 09:13:22,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50642 conditions, 18360 events. 5457/18360 cut-off events. For 103056/103098 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 196792 event pairs, 1917 based on Foata normal form. 10/17656 useless extension candidates. Maximal degree in co-relation 50562. Up to 2508 conditions per place. [2022-11-21 09:13:22,581 INFO L137 encePairwiseOnDemand]: 385/412 looper letters, 505 selfloop transitions, 107 changer transitions 112/1038 dead transitions. [2022-11-21 09:13:22,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1038 transitions, 8833 flow [2022-11-21 09:13:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 09:13:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-21 09:13:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 15828 transitions. [2022-11-21 09:13:22,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8173931005990498 [2022-11-21 09:13:22,614 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 15828 transitions. [2022-11-21 09:13:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 15828 transitions. [2022-11-21 09:13:22,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:13:22,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 15828 transitions. [2022-11-21 09:13:22,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 336.7659574468085) internal successors, (15828), 47 states have internal predecessors, (15828), 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) [2022-11-21 09:13:22,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 412.0) internal successors, (19776), 48 states have internal predecessors, (19776), 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) [2022-11-21 09:13:22,698 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 412.0) internal successors, (19776), 48 states have internal predecessors, (19776), 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) [2022-11-21 09:13:22,698 INFO L175 Difference]: Start difference. First operand has 546 places, 490 transitions, 2064 flow. Second operand 47 states and 15828 transitions. [2022-11-21 09:13:22,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1038 transitions, 8833 flow [2022-11-21 09:13:23,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 1038 transitions, 7329 flow, removed 693 selfloop flow, removed 26 redundant places. [2022-11-21 09:13:23,311 INFO L231 Difference]: Finished difference. Result has 578 places, 550 transitions, 2871 flow [2022-11-21 09:13:23,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2871, PETRI_PLACES=578, PETRI_TRANSITIONS=550} [2022-11-21 09:13:23,312 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 185 predicate places. [2022-11-21 09:13:23,312 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 550 transitions, 2871 flow [2022-11-21 09:13:23,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.1666666666667) internal successors, (5889), 18 states have internal predecessors, (5889), 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) [2022-11-21 09:13:23,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:13:23,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:13:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:13:23,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:13:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:13:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 351405598, now seen corresponding path program 3 times [2022-11-21 09:13:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:13:23,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954267437] [2022-11-21 09:13:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:13:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:13:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:13:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:13:25,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:13:25,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954267437] [2022-11-21 09:13:25,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954267437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:13:25,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:13:25,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 09:13:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419118869] [2022-11-21 09:13:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:13:25,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 09:13:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:13:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 09:13:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:13:25,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 412 [2022-11-21 09:13:25,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 550 transitions, 2871 flow. Second operand has 17 states, 17 states have (on average 332.29411764705884) internal successors, (5649), 17 states have internal predecessors, (5649), 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) [2022-11-21 09:13:25,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:13:25,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 412 [2022-11-21 09:13:25,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:13:40,613 INFO L130 PetriNetUnfolder]: 8607/31899 cut-off events. [2022-11-21 09:13:40,613 INFO L131 PetriNetUnfolder]: For 132369/132603 co-relation queries the response was YES. [2022-11-21 09:13:41,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83535 conditions, 31899 events. 8607/31899 cut-off events. For 132369/132603 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 381816 event pairs, 1234 based on Foata normal form. 102/30885 useless extension candidates. Maximal degree in co-relation 83447. Up to 3398 conditions per place. [2022-11-21 09:13:41,118 INFO L137 encePairwiseOnDemand]: 385/412 looper letters, 559 selfloop transitions, 256 changer transitions 306/1440 dead transitions. [2022-11-21 09:13:41,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 1440 transitions, 12559 flow [2022-11-21 09:13:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-21 09:13:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-11-21 09:13:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 23876 transitions. [2022-11-21 09:13:41,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278779472954231 [2022-11-21 09:13:41,145 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 23876 transitions. [2022-11-21 09:13:41,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 23876 transitions. [2022-11-21 09:13:41,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:13:41,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 23876 transitions. [2022-11-21 09:13:41,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 341.0857142857143) internal successors, (23876), 70 states have internal predecessors, (23876), 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) [2022-11-21 09:13:41,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 412.0) internal successors, (29252), 71 states have internal predecessors, (29252), 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) [2022-11-21 09:13:41,240 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 412.0) internal successors, (29252), 71 states have internal predecessors, (29252), 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) [2022-11-21 09:13:41,240 INFO L175 Difference]: Start difference. First operand has 578 places, 550 transitions, 2871 flow. Second operand 70 states and 23876 transitions. [2022-11-21 09:13:41,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 1440 transitions, 12559 flow [2022-11-21 09:13:42,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 1440 transitions, 11546 flow, removed 400 selfloop flow, removed 24 redundant places. [2022-11-21 09:13:42,420 INFO L231 Difference]: Finished difference. Result has 674 places, 690 transitions, 5475 flow [2022-11-21 09:13:42,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5475, PETRI_PLACES=674, PETRI_TRANSITIONS=690} [2022-11-21 09:13:42,422 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 281 predicate places. [2022-11-21 09:13:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 690 transitions, 5475 flow [2022-11-21 09:13:42,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 332.29411764705884) internal successors, (5649), 17 states have internal predecessors, (5649), 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) [2022-11-21 09:13:42,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:13:42,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:13:42,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:13:42,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:13:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:13:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1488850104, now seen corresponding path program 4 times [2022-11-21 09:13:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:13:42,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351339191] [2022-11-21 09:13:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:13:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:13:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:13:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:13:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:13:44,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351339191] [2022-11-21 09:13:44,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351339191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:13:44,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:13:44,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 09:13:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597833601] [2022-11-21 09:13:44,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:13:44,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:13:44,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:13:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:13:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:13:44,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 412 [2022-11-21 09:13:44,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 690 transitions, 5475 flow. Second operand has 16 states, 16 states have (on average 332.5) internal successors, (5320), 16 states have internal predecessors, (5320), 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) [2022-11-21 09:13:44,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:13:44,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 412 [2022-11-21 09:13:44,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:14:00,625 INFO L130 PetriNetUnfolder]: 10037/35986 cut-off events. [2022-11-21 09:14:00,625 INFO L131 PetriNetUnfolder]: For 279112/279172 co-relation queries the response was YES. [2022-11-21 09:14:01,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112312 conditions, 35986 events. 10037/35986 cut-off events. For 279112/279172 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 438242 event pairs, 1216 based on Foata normal form. 16/34723 useless extension candidates. Maximal degree in co-relation 112180. Up to 7065 conditions per place. [2022-11-21 09:14:01,801 INFO L137 encePairwiseOnDemand]: 386/412 looper letters, 613 selfloop transitions, 269 changer transitions 81/1282 dead transitions. [2022-11-21 09:14:01,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1282 transitions, 15406 flow [2022-11-21 09:14:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 09:14:01,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 09:14:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 13374 transitions. [2022-11-21 09:14:01,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323375653472741 [2022-11-21 09:14:01,830 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 13374 transitions. [2022-11-21 09:14:01,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 13374 transitions. [2022-11-21 09:14:01,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:14:01,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 13374 transitions. [2022-11-21 09:14:01,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 342.9230769230769) internal successors, (13374), 39 states have internal predecessors, (13374), 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) [2022-11-21 09:14:01,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 412.0) internal successors, (16480), 40 states have internal predecessors, (16480), 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) [2022-11-21 09:14:01,888 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 412.0) internal successors, (16480), 40 states have internal predecessors, (16480), 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) [2022-11-21 09:14:01,889 INFO L175 Difference]: Start difference. First operand has 674 places, 690 transitions, 5475 flow. Second operand 39 states and 13374 transitions. [2022-11-21 09:14:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 1282 transitions, 15406 flow [2022-11-21 09:14:04,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 1282 transitions, 13703 flow, removed 775 selfloop flow, removed 22 redundant places. [2022-11-21 09:14:04,067 INFO L231 Difference]: Finished difference. Result has 698 places, 803 transitions, 7581 flow [2022-11-21 09:14:04,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=7581, PETRI_PLACES=698, PETRI_TRANSITIONS=803} [2022-11-21 09:14:04,068 INFO L288 CegarLoopForPetriNet]: 393 programPoint places, 305 predicate places. [2022-11-21 09:14:04,068 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 803 transitions, 7581 flow [2022-11-21 09:14:04,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 332.5) internal successors, (5320), 16 states have internal predecessors, (5320), 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) [2022-11-21 09:14:04,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:14:04,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:04,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:14:04,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 09:14:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1677699505, now seen corresponding path program 1 times [2022-11-21 09:14:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:04,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876405531] [2022-11-21 09:14:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:05,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876405531] [2022-11-21 09:14:05,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876405531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:05,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:05,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 09:14:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713324959] [2022-11-21 09:14:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:14:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:14:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:14:05,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 412 [2022-11-21 09:14:05,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 803 transitions, 7581 flow. Second operand has 9 states, 9 states have (on average 344.44444444444446) internal successors, (3100), 9 states have internal predecessors, (3100), 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) [2022-11-21 09:14:05,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:14:05,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 412 [2022-11-21 09:14:05,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand