./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8 --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 a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --- 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-e04fb08 [2022-11-16 12:28:49,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:49,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:49,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:49,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:49,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:49,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:49,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:49,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:49,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:49,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:49,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:49,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:49,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:49,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:49,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:49,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:49,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:49,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:49,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:49,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:49,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:49,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:49,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:49,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:49,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:49,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:49,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:49,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:49,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:49,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:49,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:49,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:49,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:49,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:49,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:49,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:49,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:49,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:49,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:49,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:49,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:28:49,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:49,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:49,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:49,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:49,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:49,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:49,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:49,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:49,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:49,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:49,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:49,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:49,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:49,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:49,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:28:49,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:49,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:28:49,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:49,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:28:49,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:49,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:28:49,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:49,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:49,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:49,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:49,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:49,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:49,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:28:49,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:49,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:49,532 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:28:49,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:28:49,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:28:49,533 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_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2022-11-16 12:28:49,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:49,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:49,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:49,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:49,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:49,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-16 12:28:49,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/data/5063042e8/5ede8fe2123a45c2a3ae1ebef6be4ac7/FLAG8d5c2b438 [2022-11-16 12:28:50,610 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:50,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-16 12:28:50,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/data/5063042e8/5ede8fe2123a45c2a3ae1ebef6be4ac7/FLAG8d5c2b438 [2022-11-16 12:28:50,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/data/5063042e8/5ede8fe2123a45c2a3ae1ebef6be4ac7 [2022-11-16 12:28:50,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:50,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:50,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:50,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:50,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:50,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:50" (1/1) ... [2022-11-16 12:28:50,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407af1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:50, skipping insertion in model container [2022-11-16 12:28:50,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:50" (1/1) ... [2022-11-16 12:28:50,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:50,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:52,045 WARN L229 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_7b53ab23-687c-46eb-8999-27e500fb37c2/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-16 12:28:52,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:52,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:52,181 WARN L229 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_7b53ab23-687c-46eb-8999-27e500fb37c2/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-16 12:28:52,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:52,399 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:52,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52 WrapperNode [2022-11-16 12:28:52,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:52,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:52,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:52,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:52,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,521 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 201 [2022-11-16 12:28:52,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:52,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:52,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:52,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:52,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:52,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:52,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:52,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:52,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:52,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:52,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-11-16 12:28:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-11-16 12:28:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:28:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:28:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-11-16 12:28:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-11-16 12:28:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:28:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:28:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:28:52,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:28:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:52,688 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:28:53,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:53,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:53,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:53,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:53,567 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:28:53,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53 BoogieIcfgContainer [2022-11-16 12:28:53,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:53,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:53,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:53,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:53,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:50" (1/3) ... [2022-11-16 12:28:53,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560ef994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:53, skipping insertion in model container [2022-11-16 12:28:53,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (2/3) ... [2022-11-16 12:28:53,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560ef994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:53, skipping insertion in model container [2022-11-16 12:28:53,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53" (3/3) ... [2022-11-16 12:28:53,610 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2022-11-16 12:28:53,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:28:53,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:53,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:28:53,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:28:53,774 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 12:28:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 301 places, 331 transitions, 692 flow [2022-11-16 12:28:53,959 INFO L130 PetriNetUnfolder]: 33/341 cut-off events. [2022-11-16 12:28:53,960 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:28:53,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 341 events. 33/341 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 849 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 228. Up to 11 conditions per place. [2022-11-16 12:28:53,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 331 transitions, 692 flow [2022-11-16 12:28:53,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 227 transitions, 471 flow [2022-11-16 12:28:53,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:53,999 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;@63668c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:53,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 12:28:54,012 INFO L130 PetriNetUnfolder]: 0/39 cut-off events. [2022-11-16 12:28:54,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:54,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:54,013 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] [2022-11-16 12:28:54,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 746721752, now seen corresponding path program 1 times [2022-11-16 12:28:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:54,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214607107] [2022-11-16 12:28:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:54,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214607107] [2022-11-16 12:28:54,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214607107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:54,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:54,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681160593] [2022-11-16 12:28:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:54,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:54,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-16 12:28:54,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 227 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 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) [2022-11-16 12:28:54,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:54,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-16 12:28:54,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:55,212 INFO L130 PetriNetUnfolder]: 68/616 cut-off events. [2022-11-16 12:28:55,212 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 12:28:55,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 616 events. 68/616 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2133 event pairs, 6 based on Foata normal form. 41/589 useless extension candidates. Maximal degree in co-relation 457. Up to 40 conditions per place. [2022-11-16 12:28:55,228 INFO L137 encePairwiseOnDemand]: 310/331 looper letters, 26 selfloop transitions, 12 changer transitions 0/221 dead transitions. [2022-11-16 12:28:55,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 221 transitions, 544 flow [2022-11-16 12:28:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:28:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:28:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2022-11-16 12:28:55,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8463530427276651 [2022-11-16 12:28:55,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2022-11-16 12:28:55,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2022-11-16 12:28:55,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:55,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2022-11-16 12:28:55,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 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) [2022-11-16 12:28:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:28:55,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:28:55,313 INFO L175 Difference]: Start difference. First operand has 212 places, 227 transitions, 471 flow. Second operand 7 states and 1961 transitions. [2022-11-16 12:28:55,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 221 transitions, 544 flow [2022-11-16 12:28:55,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 221 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:28:55,331 INFO L231 Difference]: Finished difference. Result has 210 places, 214 transitions, 476 flow [2022-11-16 12:28:55,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=210, PETRI_TRANSITIONS=214} [2022-11-16 12:28:55,339 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, -2 predicate places. [2022-11-16 12:28:55,340 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 476 flow [2022-11-16 12:28:55,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 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) [2022-11-16 12:28:55,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:55,342 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] [2022-11-16 12:28:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:28:55,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash -729462340, now seen corresponding path program 1 times [2022-11-16 12:28:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:55,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735267774] [2022-11-16 12:28:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:55,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735267774] [2022-11-16 12:28:55,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735267774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:55,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:55,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049541735] [2022-11-16 12:28:55,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:55,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-16 12:28:55,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 214 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 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) [2022-11-16 12:28:55,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:55,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-16 12:28:55,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:55,991 INFO L130 PetriNetUnfolder]: 69/639 cut-off events. [2022-11-16 12:28:55,991 INFO L131 PetriNetUnfolder]: For 51/58 co-relation queries the response was YES. [2022-11-16 12:28:55,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 639 events. 69/639 cut-off events. For 51/58 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2300 event pairs, 10 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 457. Up to 58 conditions per place. [2022-11-16 12:28:55,999 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 25 selfloop transitions, 3 changer transitions 7/214 dead transitions. [2022-11-16 12:28:56,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 214 transitions, 542 flow [2022-11-16 12:28:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:28:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:28:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1662 transitions. [2022-11-16 12:28:56,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8368580060422961 [2022-11-16 12:28:56,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1662 transitions. [2022-11-16 12:28:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1662 transitions. [2022-11-16 12:28:56,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1662 transitions. [2022-11-16 12:28:56,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 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) [2022-11-16 12:28:56,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2022-11-16 12:28:56,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2022-11-16 12:28:56,024 INFO L175 Difference]: Start difference. First operand has 210 places, 214 transitions, 476 flow. Second operand 6 states and 1662 transitions. [2022-11-16 12:28:56,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 214 transitions, 542 flow [2022-11-16 12:28:56,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 214 transitions, 523 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:28:56,040 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 443 flow [2022-11-16 12:28:56,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2022-11-16 12:28:56,042 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, -4 predicate places. [2022-11-16 12:28:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 443 flow [2022-11-16 12:28:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 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) [2022-11-16 12:28:56,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:56,044 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] [2022-11-16 12:28:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:28:56,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1618690024, now seen corresponding path program 1 times [2022-11-16 12:28:56,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366739976] [2022-11-16 12:28:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:56,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366739976] [2022-11-16 12:28:56,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366739976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:56,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:56,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379080176] [2022-11-16 12:28:56,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:56,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:56,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:56,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:56,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:56,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-11-16 12:28:56,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 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) [2022-11-16 12:28:56,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:56,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-11-16 12:28:56,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:56,798 INFO L130 PetriNetUnfolder]: 114/936 cut-off events. [2022-11-16 12:28:56,798 INFO L131 PetriNetUnfolder]: For 69/81 co-relation queries the response was YES. [2022-11-16 12:28:56,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 936 events. 114/936 cut-off events. For 69/81 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4109 event pairs, 7 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 1073. Up to 51 conditions per place. [2022-11-16 12:28:56,809 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 47 selfloop transitions, 18 changer transitions 0/243 dead transitions. [2022-11-16 12:28:56,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 243 transitions, 678 flow [2022-11-16 12:28:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2548 transitions. [2022-11-16 12:28:56,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855320577374958 [2022-11-16 12:28:56,816 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2548 transitions. [2022-11-16 12:28:56,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2548 transitions. [2022-11-16 12:28:56,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:56,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2548 transitions. [2022-11-16 12:28:56,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.1111111111111) internal successors, (2548), 9 states have internal predecessors, (2548), 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) [2022-11-16 12:28:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 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) [2022-11-16 12:28:56,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 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) [2022-11-16 12:28:56,836 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 443 flow. Second operand 9 states and 2548 transitions. [2022-11-16 12:28:56,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 243 transitions, 678 flow [2022-11-16 12:28:56,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 243 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:28:56,842 INFO L231 Difference]: Finished difference. Result has 211 places, 220 transitions, 576 flow [2022-11-16 12:28:56,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=211, PETRI_TRANSITIONS=220} [2022-11-16 12:28:56,844 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, -1 predicate places. [2022-11-16 12:28:56,844 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 220 transitions, 576 flow [2022-11-16 12:28:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 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) [2022-11-16 12:28:56,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:56,846 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] [2022-11-16 12:28:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:28:56,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1481873764, now seen corresponding path program 1 times [2022-11-16 12:28:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556147758] [2022-11-16 12:28:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:57,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556147758] [2022-11-16 12:28:57,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556147758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:57,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:57,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691314095] [2022-11-16 12:28:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:57,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:57,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-11-16 12:28:57,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 220 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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) [2022-11-16 12:28:57,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:57,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-11-16 12:28:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:57,692 INFO L130 PetriNetUnfolder]: 255/1852 cut-off events. [2022-11-16 12:28:57,692 INFO L131 PetriNetUnfolder]: For 897/951 co-relation queries the response was YES. [2022-11-16 12:28:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 1852 events. 255/1852 cut-off events. For 897/951 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 12289 event pairs, 24 based on Foata normal form. 10/1710 useless extension candidates. Maximal degree in co-relation 1856. Up to 114 conditions per place. [2022-11-16 12:28:57,717 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 59 selfloop transitions, 37 changer transitions 0/285 dead transitions. [2022-11-16 12:28:57,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 285 transitions, 1082 flow [2022-11-16 12:28:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2596 transitions. [2022-11-16 12:28:57,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8714333669016449 [2022-11-16 12:28:57,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2596 transitions. [2022-11-16 12:28:57,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2596 transitions. [2022-11-16 12:28:57,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:57,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2596 transitions. [2022-11-16 12:28:57,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 288.44444444444446) internal successors, (2596), 9 states have internal predecessors, (2596), 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) [2022-11-16 12:28:57,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 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) [2022-11-16 12:28:57,751 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 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) [2022-11-16 12:28:57,751 INFO L175 Difference]: Start difference. First operand has 211 places, 220 transitions, 576 flow. Second operand 9 states and 2596 transitions. [2022-11-16 12:28:57,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 285 transitions, 1082 flow [2022-11-16 12:28:57,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 285 transitions, 1058 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:57,768 INFO L231 Difference]: Finished difference. Result has 225 places, 251 transitions, 904 flow [2022-11-16 12:28:57,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=904, PETRI_PLACES=225, PETRI_TRANSITIONS=251} [2022-11-16 12:28:57,771 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 13 predicate places. [2022-11-16 12:28:57,772 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 251 transitions, 904 flow [2022-11-16 12:28:57,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 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) [2022-11-16 12:28:57,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:57,774 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] [2022-11-16 12:28:57,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:28:57,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash 16861076, now seen corresponding path program 1 times [2022-11-16 12:28:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:57,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031353966] [2022-11-16 12:28:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:58,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031353966] [2022-11-16 12:28:58,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031353966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:58,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:58,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:58,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087110168] [2022-11-16 12:28:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:58,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-16 12:28:58,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 251 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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) [2022-11-16 12:28:58,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:58,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-16 12:28:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:58,720 INFO L130 PetriNetUnfolder]: 264/1932 cut-off events. [2022-11-16 12:28:58,720 INFO L131 PetriNetUnfolder]: For 2546/2638 co-relation queries the response was YES. [2022-11-16 12:28:58,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 1932 events. 264/1932 cut-off events. For 2546/2638 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 12988 event pairs, 31 based on Foata normal form. 6/1801 useless extension candidates. Maximal degree in co-relation 2679. Up to 202 conditions per place. [2022-11-16 12:28:58,742 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 59 selfloop transitions, 14 changer transitions 18/283 dead transitions. [2022-11-16 12:28:58,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 283 transitions, 1353 flow [2022-11-16 12:28:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:28:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:28:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2220 transitions. [2022-11-16 12:28:58,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383685800604229 [2022-11-16 12:28:58,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2220 transitions. [2022-11-16 12:28:58,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2220 transitions. [2022-11-16 12:28:58,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:58,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2220 transitions. [2022-11-16 12:28:58,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.5) internal successors, (2220), 8 states have internal predecessors, (2220), 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) [2022-11-16 12:28:58,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2022-11-16 12:28:58,763 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 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) [2022-11-16 12:28:58,763 INFO L175 Difference]: Start difference. First operand has 225 places, 251 transitions, 904 flow. Second operand 8 states and 2220 transitions. [2022-11-16 12:28:58,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 283 transitions, 1353 flow [2022-11-16 12:28:58,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 283 transitions, 1309 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:58,780 INFO L231 Difference]: Finished difference. Result has 238 places, 255 transitions, 959 flow [2022-11-16 12:28:58,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=959, PETRI_PLACES=238, PETRI_TRANSITIONS=255} [2022-11-16 12:28:58,784 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 26 predicate places. [2022-11-16 12:28:58,784 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 255 transitions, 959 flow [2022-11-16 12:28:58,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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) [2022-11-16 12:28:58,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:58,785 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] [2022-11-16 12:28:58,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:28:58,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:28:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1915370507, now seen corresponding path program 1 times [2022-11-16 12:28:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:58,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519508429] [2022-11-16 12:28:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:58,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519508429] [2022-11-16 12:28:58,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519508429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:58,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:58,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355920392] [2022-11-16 12:28:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:58,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:58,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 331 [2022-11-16 12:28:58,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 255 transitions, 959 flow. Second operand has 5 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 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) [2022-11-16 12:28:58,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:58,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 331 [2022-11-16 12:28:58,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:00,023 INFO L130 PetriNetUnfolder]: 316/3322 cut-off events. [2022-11-16 12:29:00,023 INFO L131 PetriNetUnfolder]: For 2044/2182 co-relation queries the response was YES. [2022-11-16 12:29:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 3322 events. 316/3322 cut-off events. For 2044/2182 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27871 event pairs, 15 based on Foata normal form. 3/3100 useless extension candidates. Maximal degree in co-relation 5672. Up to 192 conditions per place. [2022-11-16 12:29:00,069 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 24 selfloop transitions, 8 changer transitions 0/270 dead transitions. [2022-11-16 12:29:00,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 270 transitions, 1067 flow [2022-11-16 12:29:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2062 transitions. [2022-11-16 12:29:00,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889943892965041 [2022-11-16 12:29:00,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2062 transitions. [2022-11-16 12:29:00,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2062 transitions. [2022-11-16 12:29:00,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:00,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2062 transitions. [2022-11-16 12:29:00,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.57142857142856) internal successors, (2062), 7 states have internal predecessors, (2062), 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) [2022-11-16 12:29:00,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:29:00,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:29:00,091 INFO L175 Difference]: Start difference. First operand has 238 places, 255 transitions, 959 flow. Second operand 7 states and 2062 transitions. [2022-11-16 12:29:00,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 270 transitions, 1067 flow [2022-11-16 12:29:00,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 270 transitions, 1037 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-16 12:29:00,123 INFO L231 Difference]: Finished difference. Result has 245 places, 262 transitions, 987 flow [2022-11-16 12:29:00,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=987, PETRI_PLACES=245, PETRI_TRANSITIONS=262} [2022-11-16 12:29:00,124 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 33 predicate places. [2022-11-16 12:29:00,125 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 262 transitions, 987 flow [2022-11-16 12:29:00,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 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) [2022-11-16 12:29:00,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:00,126 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] [2022-11-16 12:29:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:29:00,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:29:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1511236005, now seen corresponding path program 1 times [2022-11-16 12:29:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661965726] [2022-11-16 12:29:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:00,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661965726] [2022-11-16 12:29:00,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661965726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:00,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:00,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059973557] [2022-11-16 12:29:00,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:00,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:00,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 331 [2022-11-16 12:29:00,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 262 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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) [2022-11-16 12:29:00,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:00,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 331 [2022-11-16 12:29:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:01,692 INFO L130 PetriNetUnfolder]: 384/4216 cut-off events. [2022-11-16 12:29:01,692 INFO L131 PetriNetUnfolder]: For 2431/2622 co-relation queries the response was YES. [2022-11-16 12:29:01,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 4216 events. 384/4216 cut-off events. For 2431/2622 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 38295 event pairs, 22 based on Foata normal form. 4/3964 useless extension candidates. Maximal degree in co-relation 6476. Up to 236 conditions per place. [2022-11-16 12:29:01,758 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 27 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-16 12:29:01,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 1112 flow [2022-11-16 12:29:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:29:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2073 transitions. [2022-11-16 12:29:01,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946914113077256 [2022-11-16 12:29:01,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2073 transitions. [2022-11-16 12:29:01,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2073 transitions. [2022-11-16 12:29:01,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:01,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2073 transitions. [2022-11-16 12:29:01,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 296.14285714285717) internal successors, (2073), 7 states have internal predecessors, (2073), 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) [2022-11-16 12:29:01,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:29:01,782 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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) [2022-11-16 12:29:01,782 INFO L175 Difference]: Start difference. First operand has 245 places, 262 transitions, 987 flow. Second operand 7 states and 2073 transitions. [2022-11-16 12:29:01,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 1112 flow [2022-11-16 12:29:01,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 282 transitions, 1112 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:29:01,821 INFO L231 Difference]: Finished difference. Result has 257 places, 270 transitions, 1055 flow [2022-11-16 12:29:01,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1055, PETRI_PLACES=257, PETRI_TRANSITIONS=270} [2022-11-16 12:29:01,823 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 45 predicate places. [2022-11-16 12:29:01,823 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 1055 flow [2022-11-16 12:29:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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) [2022-11-16 12:29:01,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:01,825 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:01,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:29:01,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:29:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash 173445115, now seen corresponding path program 1 times [2022-11-16 12:29:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:01,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96905929] [2022-11-16 12:29:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:02,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:02,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96905929] [2022-11-16 12:29:02,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96905929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:02,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:02,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:29:02,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707744308] [2022-11-16 12:29:02,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:02,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:29:02,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:29:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:29:02,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 331 [2022-11-16 12:29:02,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 270 transitions, 1055 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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) [2022-11-16 12:29:02,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:02,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 331 [2022-11-16 12:29:02,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:02,220 INFO L130 PetriNetUnfolder]: 51/679 cut-off events. [2022-11-16 12:29:02,220 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-11-16 12:29:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 679 events. 51/679 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2246 event pairs, 0 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 989. Up to 46 conditions per place. [2022-11-16 12:29:02,229 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 14 selfloop transitions, 2 changer transitions 42/223 dead transitions. [2022-11-16 12:29:02,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 223 transitions, 738 flow [2022-11-16 12:29:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:29:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:29:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2022-11-16 12:29:02,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761329305135952 [2022-11-16 12:29:02,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2022-11-16 12:29:02,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2022-11-16 12:29:02,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:02,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2022-11-16 12:29:02,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 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) [2022-11-16 12:29:02,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2022-11-16 12:29:02,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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) [2022-11-16 12:29:02,242 INFO L175 Difference]: Start difference. First operand has 257 places, 270 transitions, 1055 flow. Second operand 3 states and 870 transitions. [2022-11-16 12:29:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 223 transitions, 738 flow [2022-11-16 12:29:02,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 223 transitions, 651 flow, removed 19 selfloop flow, removed 22 redundant places. [2022-11-16 12:29:02,250 INFO L231 Difference]: Finished difference. Result has 228 places, 179 transitions, 488 flow [2022-11-16 12:29:02,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-11-16 12:29:02,254 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 16 predicate places. [2022-11-16 12:29:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 488 flow [2022-11-16 12:29:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 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) [2022-11-16 12:29:02,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:02,255 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:02,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:29:02,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-16 12:29:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2040268512, now seen corresponding path program 1 times [2022-11-16 12:29:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:02,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548171828] [2022-11-16 12:29:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:02,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:29:02,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:02,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548171828] [2022-11-16 12:29:02,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548171828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:02,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:02,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601907534] [2022-11-16 12:29:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:02,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:02,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-11-16 12:29:02,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 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) [2022-11-16 12:29:02,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:02,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-11-16 12:29:02,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:02,743 INFO L130 PetriNetUnfolder]: 31/389 cut-off events. [2022-11-16 12:29:02,743 INFO L131 PetriNetUnfolder]: For 56/68 co-relation queries the response was YES. [2022-11-16 12:29:02,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 389 events. 31/389 cut-off events. For 56/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 613 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 537. Up to 22 conditions per place. [2022-11-16 12:29:02,748 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 0 selfloop transitions, 0 changer transitions 187/187 dead transitions. [2022-11-16 12:29:02,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 583 flow [2022-11-16 12:29:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:29:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:29:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2022-11-16 12:29:02,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8474320241691843 [2022-11-16 12:29:02,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2022-11-16 12:29:02,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2022-11-16 12:29:02,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:02,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2022-11-16 12:29:02,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 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) [2022-11-16 12:29:02,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2022-11-16 12:29:02,771 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 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) [2022-11-16 12:29:02,771 INFO L175 Difference]: Start difference. First operand has 228 places, 179 transitions, 488 flow. Second operand 6 states and 1683 transitions. [2022-11-16 12:29:02,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 583 flow [2022-11-16 12:29:02,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 187 transitions, 550 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-11-16 12:29:02,777 INFO L231 Difference]: Finished difference. Result has 187 places, 0 transitions, 0 flow [2022-11-16 12:29:02,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=187, PETRI_TRANSITIONS=0} [2022-11-16 12:29:02,778 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, -25 predicate places. [2022-11-16 12:29:02,778 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 0 transitions, 0 flow [2022-11-16 12:29:02,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 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) [2022-11-16 12:29:02,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-11-16 12:29:02,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 12 remaining) [2022-11-16 12:29:02,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 12 remaining) [2022-11-16 12:29:02,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 12 remaining) [2022-11-16 12:29:02,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-11-16 12:29:02,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2022-11-16 12:29:02,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 12 remaining) [2022-11-16 12:29:02,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-11-16 12:29:02,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 12 remaining) [2022-11-16 12:29:02,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 12 remaining) [2022-11-16 12:29:02,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2022-11-16 12:29:02,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-16 12:29:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:29:02,787 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:02,794 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:29:02,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:29:02,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:29:02 BasicIcfg [2022-11-16 12:29:02,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:29:02,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:29:02,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:29:02,802 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:29:02,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53" (3/4) ... [2022-11-16 12:29:02,806 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:29:02,814 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2022-11-16 12:29:02,815 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2022-11-16 12:29:02,820 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-16 12:29:02,821 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:29:02,821 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:29:02,821 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:29:02,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:29:02,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:29:02,864 INFO L158 Benchmark]: Toolchain (without parser) took 12037.83ms. Allocated memory was 148.9MB in the beginning and 564.1MB in the end (delta: 415.2MB). Free memory was 113.8MB in the beginning and 388.3MB in the end (delta: -274.5MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,864 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:29:02,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1569.59ms. Allocated memory is still 148.9MB. Free memory was 113.8MB in the beginning and 80.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.98ms. Allocated memory is still 148.9MB. Free memory was 80.2MB in the beginning and 76.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,865 INFO L158 Benchmark]: Boogie Preprocessor took 53.74ms. Allocated memory is still 148.9MB. Free memory was 76.9MB in the beginning and 73.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,866 INFO L158 Benchmark]: RCFGBuilder took 992.90ms. Allocated memory is still 148.9MB. Free memory was 73.9MB in the beginning and 48.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,866 INFO L158 Benchmark]: TraceAbstraction took 9227.93ms. Allocated memory was 148.9MB in the beginning and 564.1MB in the end (delta: 415.2MB). Free memory was 48.4MB in the beginning and 391.4MB in the end (delta: -343.0MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,867 INFO L158 Benchmark]: Witness Printer took 61.27ms. Allocated memory is still 564.1MB. Free memory was 391.4MB in the beginning and 388.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:29:02,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1569.59ms. Allocated memory is still 148.9MB. Free memory was 113.8MB in the beginning and 80.2MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.98ms. Allocated memory is still 148.9MB. Free memory was 80.2MB in the beginning and 76.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.74ms. Allocated memory is still 148.9MB. Free memory was 76.9MB in the beginning and 73.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 992.90ms. Allocated memory is still 148.9MB. Free memory was 73.9MB in the beginning and 48.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9227.93ms. Allocated memory was 148.9MB in the beginning and 564.1MB in the end (delta: 415.2MB). Free memory was 48.4MB in the beginning and 391.4MB in the end (delta: -343.0MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. * Witness Printer took 61.27ms. Allocated memory is still 564.1MB. Free memory was 391.4MB in the beginning and 388.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 328 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 267 mSDsluCounter, 368 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 447 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 158 mSDtfsCounter, 447 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1055occurred in iteration=7, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 750 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 23/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:29:02,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b53ab23-687c-46eb-8999-27e500fb37c2/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE