./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-4_1-thread_local_vars.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-4_1-thread_local_vars.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:25:38,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:25:39,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:25:39,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:25:39,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:25:39,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:25:39,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:25:39,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:25:39,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:25:39,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:25:39,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:25:39,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:25:39,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:25:39,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:25:39,071 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:25:39,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:25:39,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:25:39,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:25:39,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:25:39,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:25:39,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:25:39,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:25:39,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:25:39,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:25:39,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:25:39,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:25:39,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:25:39,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:25:39,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:25:39,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:25:39,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:25:39,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:25:39,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:25:39,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:25:39,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:25:39,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:25:39,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:25:39,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:25:39,078 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:25:39,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:25:39,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:25:39,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:25:39,284 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:25:39,284 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:25:39,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-4_1-thread_local_vars.yml/witness.yml [2024-02-07 14:25:39,453 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:25:39,453 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:25:39,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2024-02-07 14:25:40,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:25:40,769 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:25:40,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2024-02-07 14:25:40,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923ac8df7/da4b00013aaa4699a6f4dd56b5ddf5a2/FLAG04a97334a [2024-02-07 14:25:41,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923ac8df7/da4b00013aaa4699a6f4dd56b5ddf5a2 [2024-02-07 14:25:41,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:25:41,088 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:25:41,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:25:41,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:25:41,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:25:41,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:39" (1/2) ... [2024-02-07 14:25:41,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ed53ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:41, skipping insertion in model container [2024-02-07 14:25:41,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:39" (1/2) ... [2024-02-07 14:25:41,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3442e806 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:41, skipping insertion in model container [2024-02-07 14:25:41,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:25:41" (2/2) ... [2024-02-07 14:25:41,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ed53ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:41, skipping insertion in model container [2024-02-07 14:25:41,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:25:41" (2/2) ... [2024-02-07 14:25:41,099 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:25:41,272 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:25:41,273 INFO L76 edCorrectnessWitness]: Location invariant before [L1732-L1732] ((((-128 <= error) && (-1 <= error)) && (error <= 0)) && (error <= 127)) && (error == -1 || error == 0) [2024-02-07 14:25:41,274 INFO L76 edCorrectnessWitness]: Location invariant before [L1793-L1793] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (pdev != 0)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,274 INFO L76 edCorrectnessWitness]: Location invariant before [L1756-L1756] ((((((((0 <= pdev) && (0 <= ldv_usb_state)) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (ldv_usb_state <= 1)) && (pdev != 0)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,274 INFO L76 edCorrectnessWitness]: Location invariant before [L1764-L1764] ((((((((0 <= pdev) && (0 <= ldv_usb_state)) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (ldv_usb_state <= 1)) && (pdev != 0)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,274 INFO L76 edCorrectnessWitness]: Location invariant before [L1760-L1760] ((((((((0 <= pdev) && (0 <= ldv_usb_state)) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (ldv_usb_state <= 1)) && (pdev != 0)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,275 INFO L76 edCorrectnessWitness]: Location invariant before [L1772-L1772] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (pdev != 0)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,275 INFO L76 edCorrectnessWitness]: Location invariant before [L1750-L1750] (((((((-128 <= probe_ret) && (-1 <= probe_ret)) && (0 <= ldv_usb_state)) && (ldv_usb_state <= 1)) && (probe_ret <= 0)) && (probe_ret <= 127)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && (probe_ret == -1 || probe_ret == 0) [2024-02-07 14:25:41,275 INFO L76 edCorrectnessWitness]: Location invariant before [L1759-L1759] ((0 <= ldv_usb_state) && (ldv_usb_state <= 1)) && (ldv_usb_state == 0 || ldv_usb_state == 1) [2024-02-07 14:25:41,275 INFO L76 edCorrectnessWitness]: Location invariant before [L1748-L1748] ((((((((0 <= pdev) && (0 <= ldv_usb_state)) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (ldv_usb_state <= 1)) && (pdev != 0)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1693-L1693] ((expression == 1 || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1)) [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1700-L1700] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (pdev != 0)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1784-L1784] pdev == 3 [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1726-L1726] (unsigned long )status == 0UL [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1752-L1752] ((((((((0 <= pdev) && (0 <= ldv_usb_state)) && (1 <= pdev)) && (pdev <= 9)) && (pdev <= 127)) && (ldv_usb_state <= 1)) && (pdev != 0)) && (ldv_usb_state == 0 || ldv_usb_state == 1)) && ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9) [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1791-L1791] (unsigned long )status == 0UL [2024-02-07 14:25:41,276 INFO L76 edCorrectnessWitness]: Location invariant before [L1778-L1778] pdev == 1 [2024-02-07 14:25:41,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:25:41,846 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2024-02-07 14:25:41,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:25:41,907 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:25:41,986 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:25:42,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:25:42,135 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:25:42,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42 WrapperNode [2024-02-07 14:25:42,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:25:42,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:25:42,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:25:42,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:25:42,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,194 INFO L138 Inliner]: procedures = 487, calls = 46, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 238 [2024-02-07 14:25:42,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:25:42,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:25:42,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:25:42,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:25:42,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,229 INFO L175 MemorySlicer]: Split 17 memory accesses to 6 slices as follows [2, 3, 3, 2, 5, 2]. 29 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 1, 1, 0, 5, 0]. The 4 writes are split as follows [0, 1, 1, 1, 0, 1]. [2024-02-07 14:25:42,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:25:42,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:25:42,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:25:42,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:25:42,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (1/1) ... [2024-02-07 14:25:42,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:25:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:25:42,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:25:42,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:25:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2024-02-07 14:25:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2024-02-07 14:25:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:25:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:25:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:25:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:25:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:25:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:25:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:25:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2024-02-07 14:25:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:25:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:25:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 14:25:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-02-07 14:25:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:25:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-02-07 14:25:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:25:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:25:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:25:42,326 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:25:42,558 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:25:42,559 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:25:42,828 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:25:42,828 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:25:42,961 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:25:42,961 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-07 14:25:42,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:25:42 BoogieIcfgContainer [2024-02-07 14:25:42,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:25:42,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:25:42,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:25:42,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:25:42,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:39" (1/4) ... [2024-02-07 14:25:42,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e20380d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:25:42, skipping insertion in model container [2024-02-07 14:25:42,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:25:41" (2/4) ... [2024-02-07 14:25:42,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e20380d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:25:42, skipping insertion in model container [2024-02-07 14:25:42,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:42" (3/4) ... [2024-02-07 14:25:42,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e20380d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:25:42, skipping insertion in model container [2024-02-07 14:25:42,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:25:42" (4/4) ... [2024-02-07 14:25:42,970 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2024-02-07 14:25:42,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:25:42,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2024-02-07 14:25:42,984 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:25:43,048 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-02-07 14:25:43,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 186 transitions, 399 flow [2024-02-07 14:25:43,141 INFO L124 PetriNetUnfolderBase]: 28/184 cut-off events. [2024-02-07 14:25:43,141 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 14:25:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 184 events. 28/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 590 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 135. Up to 11 conditions per place. [2024-02-07 14:25:43,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 186 transitions, 399 flow [2024-02-07 14:25:43,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 121 transitions, 258 flow [2024-02-07 14:25:43,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:25:43,178 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@82ecb5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:25:43,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-02-07 14:25:43,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:25:43,180 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:25:43,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:25:43,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:43,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:25:43,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:43,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash 19293, now seen corresponding path program 1 times [2024-02-07 14:25:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882102353] [2024-02-07 14:25:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:43,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:43,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882102353] [2024-02-07 14:25:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882102353] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:25:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655144907] [2024-02-07 14:25:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:43,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:43,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 186 [2024-02-07 14:25:43,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 121 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2024-02-07 14:25:43,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:43,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 186 [2024-02-07 14:25:43,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:44,306 INFO L124 PetriNetUnfolderBase]: 3805/7426 cut-off events. [2024-02-07 14:25:44,306 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-02-07 14:25:44,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13135 conditions, 7426 events. 3805/7426 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52335 event pairs, 1020 based on Foata normal form. 200/6024 useless extension candidates. Maximal degree in co-relation 12606. Up to 4051 conditions per place. [2024-02-07 14:25:44,349 INFO L140 encePairwiseOnDemand]: 173/186 looper letters, 81 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2024-02-07 14:25:44,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 144 transitions, 485 flow [2024-02-07 14:25:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2024-02-07 14:25:44,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-02-07 14:25:44,366 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 258 flow. Second operand 3 states and 378 transitions. [2024-02-07 14:25:44,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 144 transitions, 485 flow [2024-02-07 14:25:44,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 144 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:44,376 INFO L231 Difference]: Finished difference. Result has 109 places, 116 transitions, 265 flow [2024-02-07 14:25:44,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=109, PETRI_TRANSITIONS=116} [2024-02-07 14:25:44,381 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2024-02-07 14:25:44,381 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 116 transitions, 265 flow [2024-02-07 14:25:44,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2024-02-07 14:25:44,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:44,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:25:44,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:25:44,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:44,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 598770, now seen corresponding path program 1 times [2024-02-07 14:25:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323564733] [2024-02-07 14:25:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:44,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:44,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323564733] [2024-02-07 14:25:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323564733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:44,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:44,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:44,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410882609] [2024-02-07 14:25:44,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:44,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 186 [2024-02-07 14:25:44,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2024-02-07 14:25:44,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:44,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 186 [2024-02-07 14:25:44,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:45,092 INFO L124 PetriNetUnfolderBase]: 3833/7448 cut-off events. [2024-02-07 14:25:45,093 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-02-07 14:25:45,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13649 conditions, 7448 events. 3833/7448 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52389 event pairs, 1032 based on Foata normal form. 4/5878 useless extension candidates. Maximal degree in co-relation 3725. Up to 4106 conditions per place. [2024-02-07 14:25:45,126 INFO L140 encePairwiseOnDemand]: 174/186 looper letters, 80 selfloop transitions, 7 changer transitions 2/138 dead transitions. [2024-02-07 14:25:45,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 138 transitions, 494 flow [2024-02-07 14:25:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2024-02-07 14:25:45,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720430107526882 [2024-02-07 14:25:45,129 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 265 flow. Second operand 5 states and 532 transitions. [2024-02-07 14:25:45,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 138 transitions, 494 flow [2024-02-07 14:25:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 138 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:45,132 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 258 flow [2024-02-07 14:25:45,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2024-02-07 14:25:45,133 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2024-02-07 14:25:45,133 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 258 flow [2024-02-07 14:25:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2024-02-07 14:25:45,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:45,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:25:45,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:45,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1054232751, now seen corresponding path program 1 times [2024-02-07 14:25:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322675913] [2024-02-07 14:25:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322675913] [2024-02-07 14:25:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322675913] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705315325] [2024-02-07 14:25:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:45,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:45,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:45,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-02-07 14:25:45,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-02-07 14:25:45,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:45,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-02-07 14:25:45,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:45,687 INFO L124 PetriNetUnfolderBase]: 4113/7937 cut-off events. [2024-02-07 14:25:45,687 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-02-07 14:25:45,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 7937 events. 4113/7937 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 55505 event pairs, 3418 based on Foata normal form. 1/6572 useless extension candidates. Maximal degree in co-relation 4493. Up to 6096 conditions per place. [2024-02-07 14:25:45,717 INFO L140 encePairwiseOnDemand]: 184/186 looper letters, 56 selfloop transitions, 0 changer transitions 1/107 dead transitions. [2024-02-07 14:25:45,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 107 transitions, 370 flow [2024-02-07 14:25:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2024-02-07 14:25:45,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5931899641577061 [2024-02-07 14:25:45,719 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 258 flow. Second operand 3 states and 331 transitions. [2024-02-07 14:25:45,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 107 transitions, 370 flow [2024-02-07 14:25:45,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 358 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:45,721 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 240 flow [2024-02-07 14:25:45,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-02-07 14:25:45,722 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -8 predicate places. [2024-02-07 14:25:45,722 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 240 flow [2024-02-07 14:25:45,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2024-02-07 14:25:45,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:45,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:45,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:25:45,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:45,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1241130973, now seen corresponding path program 1 times [2024-02-07 14:25:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13221773] [2024-02-07 14:25:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:45,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13221773] [2024-02-07 14:25:45,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13221773] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:45,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:45,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746293970] [2024-02-07 14:25:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:45,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2024-02-07 14:25:45,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2024-02-07 14:25:45,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:45,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2024-02-07 14:25:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:46,617 INFO L124 PetriNetUnfolderBase]: 5283/9678 cut-off events. [2024-02-07 14:25:46,617 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-02-07 14:25:46,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17935 conditions, 9678 events. 5283/9678 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 68811 event pairs, 693 based on Foata normal form. 26/7634 useless extension candidates. Maximal degree in co-relation 17930. Up to 5490 conditions per place. [2024-02-07 14:25:46,646 INFO L140 encePairwiseOnDemand]: 170/186 looper letters, 108 selfloop transitions, 9 changer transitions 0/158 dead transitions. [2024-02-07 14:25:46,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 158 transitions, 589 flow [2024-02-07 14:25:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2024-02-07 14:25:46,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-02-07 14:25:46,647 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 240 flow. Second operand 4 states and 429 transitions. [2024-02-07 14:25:46,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 158 transitions, 589 flow [2024-02-07 14:25:46,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:25:46,650 INFO L231 Difference]: Finished difference. Result has 104 places, 111 transitions, 307 flow [2024-02-07 14:25:46,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2024-02-07 14:25:46,651 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -5 predicate places. [2024-02-07 14:25:46,651 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 111 transitions, 307 flow [2024-02-07 14:25:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2024-02-07 14:25:46,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:46,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:25:46,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:46,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 312319220, now seen corresponding path program 1 times [2024-02-07 14:25:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801719006] [2024-02-07 14:25:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:46,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801719006] [2024-02-07 14:25:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801719006] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:46,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:46,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361818027] [2024-02-07 14:25:46,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:46,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:46,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 186 [2024-02-07 14:25:46,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-02-07 14:25:46,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:46,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 186 [2024-02-07 14:25:46,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:47,782 INFO L124 PetriNetUnfolderBase]: 6647/13736 cut-off events. [2024-02-07 14:25:47,782 INFO L125 PetriNetUnfolderBase]: For 1581/1743 co-relation queries the response was YES. [2024-02-07 14:25:47,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25836 conditions, 13736 events. 6647/13736 cut-off events. For 1581/1743 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 110627 event pairs, 2845 based on Foata normal form. 12/11572 useless extension candidates. Maximal degree in co-relation 25828. Up to 5130 conditions per place. [2024-02-07 14:25:47,884 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 113 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2024-02-07 14:25:47,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 173 transitions, 720 flow [2024-02-07 14:25:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2024-02-07 14:25:47,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6801075268817204 [2024-02-07 14:25:47,886 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 307 flow. Second operand 4 states and 506 transitions. [2024-02-07 14:25:47,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 173 transitions, 720 flow [2024-02-07 14:25:47,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 173 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:47,900 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 343 flow [2024-02-07 14:25:47,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2024-02-07 14:25:47,901 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2024-02-07 14:25:47,901 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 343 flow [2024-02-07 14:25:47,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-02-07 14:25:47,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:25:47,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:47,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1091961986, now seen corresponding path program 1 times [2024-02-07 14:25:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104337859] [2024-02-07 14:25:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:48,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104337859] [2024-02-07 14:25:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104337859] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:48,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:48,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074183740] [2024-02-07 14:25:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:25:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:25:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:25:48,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 186 [2024-02-07 14:25:48,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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) [2024-02-07 14:25:48,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:48,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 186 [2024-02-07 14:25:48,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:48,922 INFO L124 PetriNetUnfolderBase]: 5258/10902 cut-off events. [2024-02-07 14:25:48,922 INFO L125 PetriNetUnfolderBase]: For 2045/2213 co-relation queries the response was YES. [2024-02-07 14:25:48,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21459 conditions, 10902 events. 5258/10902 cut-off events. For 2045/2213 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 87003 event pairs, 2015 based on Foata normal form. 276/9818 useless extension candidates. Maximal degree in co-relation 21449. Up to 3663 conditions per place. [2024-02-07 14:25:48,979 INFO L140 encePairwiseOnDemand]: 172/186 looper letters, 131 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2024-02-07 14:25:48,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 192 transitions, 796 flow [2024-02-07 14:25:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 685 transitions. [2024-02-07 14:25:48,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137992831541219 [2024-02-07 14:25:48,982 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 343 flow. Second operand 6 states and 685 transitions. [2024-02-07 14:25:48,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 192 transitions, 796 flow [2024-02-07 14:25:48,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 192 transitions, 789 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:48,994 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 384 flow [2024-02-07 14:25:48,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-02-07 14:25:48,995 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2024-02-07 14:25:48,995 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 384 flow [2024-02-07 14:25:48,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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) [2024-02-07 14:25:48,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:48,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:25:48,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr11ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:48,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2039645316, now seen corresponding path program 1 times [2024-02-07 14:25:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097443434] [2024-02-07 14:25:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:49,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:49,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097443434] [2024-02-07 14:25:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097443434] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:49,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557280579] [2024-02-07 14:25:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:49,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:49,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:49,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 186 [2024-02-07 14:25:49,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-02-07 14:25:49,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:49,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 186 [2024-02-07 14:25:49,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:49,819 INFO L124 PetriNetUnfolderBase]: 5907/11715 cut-off events. [2024-02-07 14:25:49,819 INFO L125 PetriNetUnfolderBase]: For 5664/5898 co-relation queries the response was YES. [2024-02-07 14:25:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 11715 events. 5907/11715 cut-off events. For 5664/5898 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 91308 event pairs, 3744 based on Foata normal form. 0/9617 useless extension candidates. Maximal degree in co-relation 24525. Up to 7229 conditions per place. [2024-02-07 14:25:49,878 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 80 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-02-07 14:25:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 135 transitions, 597 flow [2024-02-07 14:25:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-02-07 14:25:49,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469534050179212 [2024-02-07 14:25:49,880 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 384 flow. Second operand 3 states and 361 transitions. [2024-02-07 14:25:49,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 135 transitions, 597 flow [2024-02-07 14:25:49,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 578 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:49,886 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 391 flow [2024-02-07 14:25:49,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-02-07 14:25:49,887 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2024-02-07 14:25:49,887 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 391 flow [2024-02-07 14:25:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-02-07 14:25:49,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:49,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:25:49,888 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:49,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash -506919493, now seen corresponding path program 1 times [2024-02-07 14:25:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058405987] [2024-02-07 14:25:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058405987] [2024-02-07 14:25:49,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058405987] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748140309] [2024-02-07 14:25:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:49,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:49,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:49,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 186 [2024-02-07 14:25:49,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2024-02-07 14:25:49,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:49,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 186 [2024-02-07 14:25:49,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:50,681 INFO L124 PetriNetUnfolderBase]: 5385/11556 cut-off events. [2024-02-07 14:25:50,681 INFO L125 PetriNetUnfolderBase]: For 4689/4719 co-relation queries the response was YES. [2024-02-07 14:25:50,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23640 conditions, 11556 events. 5385/11556 cut-off events. For 4689/4719 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 96443 event pairs, 1941 based on Foata normal form. 0/10056 useless extension candidates. Maximal degree in co-relation 23626. Up to 3931 conditions per place. [2024-02-07 14:25:50,737 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 102 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-02-07 14:25:50,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 163 transitions, 728 flow [2024-02-07 14:25:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2024-02-07 14:25:50,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 14:25:50,740 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 391 flow. Second operand 4 states and 496 transitions. [2024-02-07 14:25:50,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 163 transitions, 728 flow [2024-02-07 14:25:50,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 163 transitions, 718 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:50,760 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 405 flow [2024-02-07 14:25:50,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2024-02-07 14:25:50,762 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2024-02-07 14:25:50,762 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 405 flow [2024-02-07 14:25:50,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2024-02-07 14:25:50,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:50,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:25:50,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr12ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:50,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1195503909, now seen corresponding path program 1 times [2024-02-07 14:25:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381317475] [2024-02-07 14:25:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:50,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:50,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381317475] [2024-02-07 14:25:50,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381317475] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:50,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:50,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:50,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926231442] [2024-02-07 14:25:50,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:50,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:50,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:50,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 186 [2024-02-07 14:25:50,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2024-02-07 14:25:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:50,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 186 [2024-02-07 14:25:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:51,798 INFO L124 PetriNetUnfolderBase]: 6842/13273 cut-off events. [2024-02-07 14:25:51,798 INFO L125 PetriNetUnfolderBase]: For 6831/6927 co-relation queries the response was YES. [2024-02-07 14:25:51,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28736 conditions, 13273 events. 6842/13273 cut-off events. For 6831/6927 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 103379 event pairs, 4394 based on Foata normal form. 636/12399 useless extension candidates. Maximal degree in co-relation 28721. Up to 8210 conditions per place. [2024-02-07 14:25:51,862 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 115 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2024-02-07 14:25:51,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 169 transitions, 766 flow [2024-02-07 14:25:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2024-02-07 14:25:51,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.613978494623656 [2024-02-07 14:25:51,864 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 405 flow. Second operand 5 states and 571 transitions. [2024-02-07 14:25:51,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 169 transitions, 766 flow [2024-02-07 14:25:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 169 transitions, 749 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:51,875 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 437 flow [2024-02-07 14:25:51,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-02-07 14:25:51,875 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 10 predicate places. [2024-02-07 14:25:51,876 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 437 flow [2024-02-07 14:25:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2024-02-07 14:25:51,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:51,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:25:51,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_usbErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1465365659, now seen corresponding path program 1 times [2024-02-07 14:25:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520183667] [2024-02-07 14:25:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520183667] [2024-02-07 14:25:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520183667] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520735140] [2024-02-07 14:25:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:25:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:25:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:25:52,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2024-02-07 14:25:52,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 437 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2024-02-07 14:25:52,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:52,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2024-02-07 14:25:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:53,206 INFO L124 PetriNetUnfolderBase]: 6103/12868 cut-off events. [2024-02-07 14:25:53,207 INFO L125 PetriNetUnfolderBase]: For 7029/7113 co-relation queries the response was YES. [2024-02-07 14:25:53,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28140 conditions, 12868 events. 6103/12868 cut-off events. For 7029/7113 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 107858 event pairs, 2474 based on Foata normal form. 312/11558 useless extension candidates. Maximal degree in co-relation 28124. Up to 5506 conditions per place. [2024-02-07 14:25:53,285 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 131 selfloop transitions, 12 changer transitions 0/190 dead transitions. [2024-02-07 14:25:53,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 190 transitions, 889 flow [2024-02-07 14:25:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2024-02-07 14:25:53,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5931899641577061 [2024-02-07 14:25:53,288 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 437 flow. Second operand 6 states and 662 transitions. [2024-02-07 14:25:53,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 190 transitions, 889 flow [2024-02-07 14:25:53,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 884 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:53,326 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 457 flow [2024-02-07 14:25:53,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2024-02-07 14:25:53,326 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 14 predicate places. [2024-02-07 14:25:53,327 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 457 flow [2024-02-07 14:25:53,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2024-02-07 14:25:53,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:53,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:25:53,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:53,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1967838664, now seen corresponding path program 1 times [2024-02-07 14:25:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:53,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650440406] [2024-02-07 14:25:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:53,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650440406] [2024-02-07 14:25:53,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650440406] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:53,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:53,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:53,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922400962] [2024-02-07 14:25:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:53,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 186 [2024-02-07 14:25:53,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-02-07 14:25:53,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:53,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 186 [2024-02-07 14:25:53,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:54,337 INFO L124 PetriNetUnfolderBase]: 7042/14257 cut-off events. [2024-02-07 14:25:54,337 INFO L125 PetriNetUnfolderBase]: For 12108/12234 co-relation queries the response was YES. [2024-02-07 14:25:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32382 conditions, 14257 events. 7042/14257 cut-off events. For 12108/12234 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 112295 event pairs, 3064 based on Foata normal form. 290/12633 useless extension candidates. Maximal degree in co-relation 32364. Up to 5684 conditions per place. [2024-02-07 14:25:54,409 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 101 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2024-02-07 14:25:54,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 158 transitions, 816 flow [2024-02-07 14:25:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2024-02-07 14:25:54,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6827956989247311 [2024-02-07 14:25:54,411 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 457 flow. Second operand 3 states and 381 transitions. [2024-02-07 14:25:54,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 158 transitions, 816 flow [2024-02-07 14:25:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 158 transitions, 776 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 14:25:54,465 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 487 flow [2024-02-07 14:25:54,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-02-07 14:25:54,465 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 12 predicate places. [2024-02-07 14:25:54,466 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 487 flow [2024-02-07 14:25:54,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-02-07 14:25:54,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:54,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:25:54,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:54,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 873457148, now seen corresponding path program 1 times [2024-02-07 14:25:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530160263] [2024-02-07 14:25:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530160263] [2024-02-07 14:25:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530160263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159227855] [2024-02-07 14:25:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:54,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:54,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:54,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 186 [2024-02-07 14:25:54,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-02-07 14:25:54,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:54,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 186 [2024-02-07 14:25:54,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:55,527 INFO L124 PetriNetUnfolderBase]: 7246/14317 cut-off events. [2024-02-07 14:25:55,528 INFO L125 PetriNetUnfolderBase]: For 12920/13046 co-relation queries the response was YES. [2024-02-07 14:25:55,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33011 conditions, 14317 events. 7246/14317 cut-off events. For 12920/13046 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 110391 event pairs, 3214 based on Foata normal form. 416/13116 useless extension candidates. Maximal degree in co-relation 32992. Up to 5956 conditions per place. [2024-02-07 14:25:55,590 INFO L140 encePairwiseOnDemand]: 178/186 looper letters, 138 selfloop transitions, 13 changer transitions 2/200 dead transitions. [2024-02-07 14:25:55,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 200 transitions, 1056 flow [2024-02-07 14:25:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 603 transitions. [2024-02-07 14:25:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483870967741936 [2024-02-07 14:25:55,593 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 487 flow. Second operand 5 states and 603 transitions. [2024-02-07 14:25:55,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 200 transitions, 1056 flow [2024-02-07 14:25:55,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 200 transitions, 1022 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:55,691 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 534 flow [2024-02-07 14:25:55,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2024-02-07 14:25:55,692 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 17 predicate places. [2024-02-07 14:25:55,692 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 534 flow [2024-02-07 14:25:55,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-02-07 14:25:55,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:55,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:55,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:25:55,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:55,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1660362800, now seen corresponding path program 1 times [2024-02-07 14:25:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157341556] [2024-02-07 14:25:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:55,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157341556] [2024-02-07 14:25:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157341556] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:55,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030519514] [2024-02-07 14:25:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:55,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:55,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 186 [2024-02-07 14:25:55,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-02-07 14:25:55,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:55,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 186 [2024-02-07 14:25:55,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:56,796 INFO L124 PetriNetUnfolderBase]: 7713/15012 cut-off events. [2024-02-07 14:25:56,796 INFO L125 PetriNetUnfolderBase]: For 13384/13408 co-relation queries the response was YES. [2024-02-07 14:25:56,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34955 conditions, 15012 events. 7713/15012 cut-off events. For 13384/13408 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 112865 event pairs, 2606 based on Foata normal form. 252/13472 useless extension candidates. Maximal degree in co-relation 34933. Up to 10117 conditions per place. [2024-02-07 14:25:56,875 INFO L140 encePairwiseOnDemand]: 174/186 looper letters, 121 selfloop transitions, 7 changer transitions 0/168 dead transitions. [2024-02-07 14:25:56,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 168 transitions, 883 flow [2024-02-07 14:25:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2024-02-07 14:25:56,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725806451612904 [2024-02-07 14:25:56,877 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 534 flow. Second operand 4 states and 426 transitions. [2024-02-07 14:25:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 168 transitions, 883 flow [2024-02-07 14:25:56,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 168 transitions, 883 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:25:56,958 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 539 flow [2024-02-07 14:25:56,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2024-02-07 14:25:56,958 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 21 predicate places. [2024-02-07 14:25:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 539 flow [2024-02-07 14:25:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-02-07 14:25:56,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:56,959 INFO L208 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] [2024-02-07 14:25:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:25:56,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:56,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1139210397, now seen corresponding path program 1 times [2024-02-07 14:25:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:56,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68278551] [2024-02-07 14:25:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:56,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:57,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68278551] [2024-02-07 14:25:57,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68278551] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:57,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:25:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103351506] [2024-02-07 14:25:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:57,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:25:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:25:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:25:57,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 186 [2024-02-07 14:25:57,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2024-02-07 14:25:57,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:57,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 186 [2024-02-07 14:25:57,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:58,061 INFO L124 PetriNetUnfolderBase]: 6259/12553 cut-off events. [2024-02-07 14:25:58,061 INFO L125 PetriNetUnfolderBase]: For 10268/10454 co-relation queries the response was YES. [2024-02-07 14:25:58,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29624 conditions, 12553 events. 6259/12553 cut-off events. For 10268/10454 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 94753 event pairs, 4295 based on Foata normal form. 129/11196 useless extension candidates. Maximal degree in co-relation 29600. Up to 7610 conditions per place. [2024-02-07 14:25:58,106 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 113 selfloop transitions, 8 changer transitions 0/174 dead transitions. [2024-02-07 14:25:58,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 174 transitions, 968 flow [2024-02-07 14:25:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 588 transitions. [2024-02-07 14:25:58,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632258064516129 [2024-02-07 14:25:58,109 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 539 flow. Second operand 5 states and 588 transitions. [2024-02-07 14:25:58,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 174 transitions, 968 flow [2024-02-07 14:25:58,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 174 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:58,155 INFO L231 Difference]: Finished difference. Result has 130 places, 123 transitions, 539 flow [2024-02-07 14:25:58,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=130, PETRI_TRANSITIONS=123} [2024-02-07 14:25:58,155 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 21 predicate places. [2024-02-07 14:25:58,155 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 123 transitions, 539 flow [2024-02-07 14:25:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2024-02-07 14:25:58,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:58,156 INFO L208 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] [2024-02-07 14:25:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:25:58,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_usbErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -922880024, now seen corresponding path program 1 times [2024-02-07 14:25:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400961459] [2024-02-07 14:25:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:58,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400961459] [2024-02-07 14:25:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400961459] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138892718] [2024-02-07 14:25:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:58,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 186 [2024-02-07 14:25:58,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 123 transitions, 539 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2024-02-07 14:25:58,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:58,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 186 [2024-02-07 14:25:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:59,406 INFO L124 PetriNetUnfolderBase]: 8504/16178 cut-off events. [2024-02-07 14:25:59,406 INFO L125 PetriNetUnfolderBase]: For 17456/17468 co-relation queries the response was YES. [2024-02-07 14:25:59,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39317 conditions, 16178 events. 8504/16178 cut-off events. For 17456/17468 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 119670 event pairs, 2784 based on Foata normal form. 78/14299 useless extension candidates. Maximal degree in co-relation 39293. Up to 5121 conditions per place. [2024-02-07 14:25:59,484 INFO L140 encePairwiseOnDemand]: 177/186 looper letters, 122 selfloop transitions, 17 changer transitions 0/177 dead transitions. [2024-02-07 14:25:59,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 177 transitions, 1006 flow [2024-02-07 14:25:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2024-02-07 14:25:59,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-02-07 14:25:59,486 INFO L175 Difference]: Start difference. First operand has 130 places, 123 transitions, 539 flow. Second operand 4 states and 424 transitions. [2024-02-07 14:25:59,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 177 transitions, 1006 flow [2024-02-07 14:25:59,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 177 transitions, 986 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:59,596 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 639 flow [2024-02-07 14:25:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-02-07 14:25:59,597 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 22 predicate places. [2024-02-07 14:25:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 639 flow [2024-02-07 14:25:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2024-02-07 14:25:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:59,597 INFO L208 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] [2024-02-07 14:25:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:25:59,598 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:25:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 955784551, now seen corresponding path program 1 times [2024-02-07 14:25:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869414278] [2024-02-07 14:25:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869414278] [2024-02-07 14:25:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869414278] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473675927] [2024-02-07 14:25:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:59,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 186 [2024-02-07 14:25:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 639 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2024-02-07 14:25:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 186 [2024-02-07 14:25:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:00,702 INFO L124 PetriNetUnfolderBase]: 7369/14352 cut-off events. [2024-02-07 14:26:00,702 INFO L125 PetriNetUnfolderBase]: For 20768/20822 co-relation queries the response was YES. [2024-02-07 14:26:00,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35578 conditions, 14352 events. 7369/14352 cut-off events. For 20768/20822 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 107410 event pairs, 5570 based on Foata normal form. 37/12609 useless extension candidates. Maximal degree in co-relation 35552. Up to 10611 conditions per place. [2024-02-07 14:26:00,771 INFO L140 encePairwiseOnDemand]: 182/186 looper letters, 90 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-02-07 14:26:00,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 141 transitions, 867 flow [2024-02-07 14:26:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:26:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:26:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2024-02-07 14:26:00,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-02-07 14:26:00,773 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 639 flow. Second operand 3 states and 351 transitions. [2024-02-07 14:26:00,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 141 transitions, 867 flow [2024-02-07 14:26:00,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 855 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-07 14:26:00,863 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 646 flow [2024-02-07 14:26:00,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-02-07 14:26:00,863 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 22 predicate places. [2024-02-07 14:26:00,863 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 646 flow [2024-02-07 14:26:00,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2024-02-07 14:26:00,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:00,864 INFO L208 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] [2024-02-07 14:26:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:26:00,864 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:00,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -435449302, now seen corresponding path program 1 times [2024-02-07 14:26:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902521339] [2024-02-07 14:26:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902521339] [2024-02-07 14:26:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902521339] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941896695] [2024-02-07 14:26:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:00,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2024-02-07 14:26:00,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 646 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2024-02-07 14:26:00,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:00,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2024-02-07 14:26:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:02,135 INFO L124 PetriNetUnfolderBase]: 7435/14463 cut-off events. [2024-02-07 14:26:02,135 INFO L125 PetriNetUnfolderBase]: For 20367/20421 co-relation queries the response was YES. [2024-02-07 14:26:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35739 conditions, 14463 events. 7435/14463 cut-off events. For 20367/20421 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 108275 event pairs, 5630 based on Foata normal form. 102/12837 useless extension candidates. Maximal degree in co-relation 35712. Up to 10718 conditions per place. [2024-02-07 14:26:02,193 INFO L140 encePairwiseOnDemand]: 178/186 looper letters, 106 selfloop transitions, 10 changer transitions 4/165 dead transitions. [2024-02-07 14:26:02,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 165 transitions, 1004 flow [2024-02-07 14:26:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:26:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:26:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2024-02-07 14:26:02,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578494623655914 [2024-02-07 14:26:02,195 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 646 flow. Second operand 5 states and 538 transitions. [2024-02-07 14:26:02,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 165 transitions, 1004 flow [2024-02-07 14:26:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 165 transitions, 991 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-07 14:26:02,273 INFO L231 Difference]: Finished difference. Result has 137 places, 130 transitions, 692 flow [2024-02-07 14:26:02,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=137, PETRI_TRANSITIONS=130} [2024-02-07 14:26:02,273 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 28 predicate places. [2024-02-07 14:26:02,274 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 130 transitions, 692 flow [2024-02-07 14:26:02,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2024-02-07 14:26:02,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:02,274 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-02-07 14:26:02,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:26:02,274 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:02,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1454820743, now seen corresponding path program 1 times [2024-02-07 14:26:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270252433] [2024-02-07 14:26:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:02,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270252433] [2024-02-07 14:26:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270252433] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:02,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:02,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:02,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255702459] [2024-02-07 14:26:02,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:02,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:02,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:02,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-02-07 14:26:02,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 130 transitions, 692 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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) [2024-02-07 14:26:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-02-07 14:26:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:03,958 INFO L124 PetriNetUnfolderBase]: 9116/17372 cut-off events. [2024-02-07 14:26:03,958 INFO L125 PetriNetUnfolderBase]: For 24708/24786 co-relation queries the response was YES. [2024-02-07 14:26:04,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42753 conditions, 17372 events. 9116/17372 cut-off events. For 24708/24786 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 131129 event pairs, 3817 based on Foata normal form. 424/15813 useless extension candidates. Maximal degree in co-relation 42723. Up to 6455 conditions per place. [2024-02-07 14:26:04,080 INFO L140 encePairwiseOnDemand]: 173/186 looper letters, 133 selfloop transitions, 17 changer transitions 3/192 dead transitions. [2024-02-07 14:26:04,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 192 transitions, 1209 flow [2024-02-07 14:26:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2024-02-07 14:26:04,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-02-07 14:26:04,082 INFO L175 Difference]: Start difference. First operand has 137 places, 130 transitions, 692 flow. Second operand 4 states and 450 transitions. [2024-02-07 14:26:04,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 192 transitions, 1209 flow [2024-02-07 14:26:04,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 192 transitions, 1204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:26:04,228 INFO L231 Difference]: Finished difference. Result has 141 places, 129 transitions, 747 flow [2024-02-07 14:26:04,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=747, PETRI_PLACES=141, PETRI_TRANSITIONS=129} [2024-02-07 14:26:04,229 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 32 predicate places. [2024-02-07 14:26:04,229 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 129 transitions, 747 flow [2024-02-07 14:26:04,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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) [2024-02-07 14:26:04,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:04,230 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-02-07 14:26:04,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:26:04,230 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:04,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:04,230 INFO L85 PathProgramCache]: Analyzing trace with hash 425155069, now seen corresponding path program 2 times [2024-02-07 14:26:04,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:04,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938046356] [2024-02-07 14:26:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938046356] [2024-02-07 14:26:04,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938046356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:04,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:04,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788181062] [2024-02-07 14:26:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:04,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:04,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:04,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-02-07 14:26:04,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 129 transitions, 747 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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) [2024-02-07 14:26:04,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:04,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-02-07 14:26:04,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:05,162 INFO L124 PetriNetUnfolderBase]: 5435/10067 cut-off events. [2024-02-07 14:26:05,162 INFO L125 PetriNetUnfolderBase]: For 16913/16943 co-relation queries the response was YES. [2024-02-07 14:26:05,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23578 conditions, 10067 events. 5435/10067 cut-off events. For 16913/16943 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 63402 event pairs, 1233 based on Foata normal form. 552/9401 useless extension candidates. Maximal degree in co-relation 23545. Up to 2955 conditions per place. [2024-02-07 14:26:05,222 INFO L140 encePairwiseOnDemand]: 177/186 looper letters, 97 selfloop transitions, 11 changer transitions 16/148 dead transitions. [2024-02-07 14:26:05,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 148 transitions, 884 flow [2024-02-07 14:26:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2024-02-07 14:26:05,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-02-07 14:26:05,224 INFO L175 Difference]: Start difference. First operand has 141 places, 129 transitions, 747 flow. Second operand 4 states and 429 transitions. [2024-02-07 14:26:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 148 transitions, 884 flow [2024-02-07 14:26:05,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 788 flow, removed 5 selfloop flow, removed 22 redundant places. [2024-02-07 14:26:05,258 INFO L231 Difference]: Finished difference. Result has 112 places, 86 transitions, 432 flow [2024-02-07 14:26:05,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=112, PETRI_TRANSITIONS=86} [2024-02-07 14:26:05,259 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 3 predicate places. [2024-02-07 14:26:05,259 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 86 transitions, 432 flow [2024-02-07 14:26:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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) [2024-02-07 14:26:05,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:05,260 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-02-07 14:26:05,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 14:26:05,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_usbErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:05,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1467516691, now seen corresponding path program 1 times [2024-02-07 14:26:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019617358] [2024-02-07 14:26:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:05,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019617358] [2024-02-07 14:26:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019617358] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:26:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679605964] [2024-02-07 14:26:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:26:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:26:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:26:05,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 186 [2024-02-07 14:26:05,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 86 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2024-02-07 14:26:05,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:05,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 186 [2024-02-07 14:26:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:06,044 INFO L124 PetriNetUnfolderBase]: 4875/8893 cut-off events. [2024-02-07 14:26:06,044 INFO L125 PetriNetUnfolderBase]: For 9924/9996 co-relation queries the response was YES. [2024-02-07 14:26:06,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21164 conditions, 8893 events. 4875/8893 cut-off events. For 9924/9996 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 53889 event pairs, 3486 based on Foata normal form. 42/7831 useless extension candidates. Maximal degree in co-relation 21143. Up to 6173 conditions per place. [2024-02-07 14:26:06,080 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 75 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2024-02-07 14:26:06,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 715 flow [2024-02-07 14:26:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:26:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:26:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2024-02-07 14:26:06,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118279569892473 [2024-02-07 14:26:06,082 INFO L175 Difference]: Start difference. First operand has 112 places, 86 transitions, 432 flow. Second operand 5 states and 569 transitions. [2024-02-07 14:26:06,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 715 flow [2024-02-07 14:26:06,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 114 transitions, 688 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:06,099 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 444 flow [2024-02-07 14:26:06,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-02-07 14:26:06,100 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -11 predicate places. [2024-02-07 14:26:06,100 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 444 flow [2024-02-07 14:26:06,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2024-02-07 14:26:06,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:06,100 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-02-07 14:26:06,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 14:26:06,101 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread_usbErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:06,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 373511063, now seen corresponding path program 1 times [2024-02-07 14:26:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:06,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547537254] [2024-02-07 14:26:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:26:06,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547537254] [2024-02-07 14:26:06,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547537254] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:06,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:06,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:06,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042579325] [2024-02-07 14:26:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:06,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 186 [2024-02-07 14:26:06,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2024-02-07 14:26:06,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:06,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 186 [2024-02-07 14:26:06,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:06,838 INFO L124 PetriNetUnfolderBase]: 5489/9819 cut-off events. [2024-02-07 14:26:06,838 INFO L125 PetriNetUnfolderBase]: For 11814/11886 co-relation queries the response was YES. [2024-02-07 14:26:06,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23801 conditions, 9819 events. 5489/9819 cut-off events. For 11814/11886 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 59431 event pairs, 1678 based on Foata normal form. 72/8687 useless extension candidates. Maximal degree in co-relation 23781. Up to 6177 conditions per place. [2024-02-07 14:26:06,891 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 88 selfloop transitions, 13 changer transitions 0/123 dead transitions. [2024-02-07 14:26:06,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 736 flow [2024-02-07 14:26:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2024-02-07 14:26:06,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-02-07 14:26:06,893 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 444 flow. Second operand 4 states and 402 transitions. [2024-02-07 14:26:06,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 736 flow [2024-02-07 14:26:06,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 123 transitions, 718 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-07 14:26:06,928 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 457 flow [2024-02-07 14:26:06,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-02-07 14:26:06,928 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -13 predicate places. [2024-02-07 14:26:06,928 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 457 flow [2024-02-07 14:26:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2024-02-07 14:26:06,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:06,929 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-02-07 14:26:06,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 14:26:06,929 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread_usbErr8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash 318394379, now seen corresponding path program 1 times [2024-02-07 14:26:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060477601] [2024-02-07 14:26:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:26:07,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060477601] [2024-02-07 14:26:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060477601] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:07,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:07,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034860309] [2024-02-07 14:26:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:07,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 186 [2024-02-07 14:26:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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) [2024-02-07 14:26:07,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:07,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 186 [2024-02-07 14:26:07,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:07,658 INFO L124 PetriNetUnfolderBase]: 4844/8820 cut-off events. [2024-02-07 14:26:07,658 INFO L125 PetriNetUnfolderBase]: For 9963/9999 co-relation queries the response was YES. [2024-02-07 14:26:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21247 conditions, 8820 events. 4844/8820 cut-off events. For 9963/9999 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 53345 event pairs, 3582 based on Foata normal form. 12/7763 useless extension candidates. Maximal degree in co-relation 21227. Up to 5783 conditions per place. [2024-02-07 14:26:07,706 INFO L140 encePairwiseOnDemand]: 180/186 looper letters, 79 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-02-07 14:26:07,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 697 flow [2024-02-07 14:26:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-02-07 14:26:07,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592741935483871 [2024-02-07 14:26:07,708 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 457 flow. Second operand 4 states and 441 transitions. [2024-02-07 14:26:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 697 flow [2024-02-07 14:26:07,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 109 transitions, 662 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:07,730 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 428 flow [2024-02-07 14:26:07,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-02-07 14:26:07,731 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -16 predicate places. [2024-02-07 14:26:07,731 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 428 flow [2024-02-07 14:26:07,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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) [2024-02-07 14:26:07,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:07,731 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 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] [2024-02-07 14:26:07,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 14:26:07,731 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT, thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (and 44 more)] === [2024-02-07 14:26:07,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash 824060020, now seen corresponding path program 1 times [2024-02-07 14:26:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:07,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543347253] [2024-02-07 14:26:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:07,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 14:26:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543347253] [2024-02-07 14:26:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543347253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354048461] [2024-02-07 14:26:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:07,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:07,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:07,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-02-07 14:26:07,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2024-02-07 14:26:07,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:07,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-02-07 14:26:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:08,452 INFO L124 PetriNetUnfolderBase]: 4662/8314 cut-off events. [2024-02-07 14:26:08,452 INFO L125 PetriNetUnfolderBase]: For 9126/9144 co-relation queries the response was YES. [2024-02-07 14:26:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19443 conditions, 8314 events. 4662/8314 cut-off events. For 9126/9144 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 49692 event pairs, 3201 based on Foata normal form. 126/7439 useless extension candidates. Maximal degree in co-relation 19423. Up to 5408 conditions per place. [2024-02-07 14:26:08,477 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2024-02-07 14:26:08,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 117 transitions, 692 flow [2024-02-07 14:26:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2024-02-07 14:26:08,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470430107526881 [2024-02-07 14:26:08,479 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 428 flow. Second operand 4 states and 407 transitions. [2024-02-07 14:26:08,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 117 transitions, 692 flow [2024-02-07 14:26:08,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 663 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-07 14:26:08,498 INFO L231 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2024-02-07 14:26:08,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2024-02-07 14:26:08,498 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -21 predicate places. [2024-02-07 14:26:08,498 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2024-02-07 14:26:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2024-02-07 14:26:08,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 47 remaining) [2024-02-07 14:26:08,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 47 remaining) [2024-02-07 14:26:08,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (44 of 47 remaining) [2024-02-07 14:26:08,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (41 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (38 of 47 remaining) [2024-02-07 14:26:08,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (34 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 47 remaining) [2024-02-07 14:26:08,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr13ASSERT_VIOLATIONERROR_FUNCTION (27 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 47 remaining) [2024-02-07 14:26:08,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONERROR_FUNCTION (19 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 47 remaining) [2024-02-07 14:26:08,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr13ASSERT_VIOLATIONERROR_FUNCTION (9 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 47 remaining) [2024-02-07 14:26:08,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 47 remaining) [2024-02-07 14:26:08,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 47 remaining) [2024-02-07 14:26:08,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 14:26:08,508 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:08,512 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:26:08,512 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:26:08,515 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-07 14:26:08,516 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-07 14:26:08,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:26:08 BasicIcfg [2024-02-07 14:26:08,516 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:26:08,517 INFO L158 Benchmark]: Toolchain (without parser) took 27430.46ms. Allocated memory was 155.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 76.4MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-02-07 14:26:08,517 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 82.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:08,517 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:08,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1044.89ms. Allocated memory is still 155.2MB. Free memory was 76.2MB in the beginning and 110.6MB in the end (delta: -34.4MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-02-07 14:26:08,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.32ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 106.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:26:08,518 INFO L158 Benchmark]: Boogie Preprocessor took 60.30ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 102.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:26:08,518 INFO L158 Benchmark]: RCFGBuilder took 703.62ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 112.9MB in the end (delta: -10.9MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2024-02-07 14:26:08,518 INFO L158 Benchmark]: TraceAbstraction took 25552.26ms. Allocated memory was 155.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 112.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-02-07 14:26:08,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 82.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1044.89ms. Allocated memory is still 155.2MB. Free memory was 76.2MB in the beginning and 110.6MB in the end (delta: -34.4MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.32ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 106.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.30ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 102.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 703.62ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 112.9MB in the end (delta: -10.9MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * TraceAbstraction took 25552.26ms. Allocated memory was 155.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 112.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1778]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1784]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1791]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1748]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1772]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1756]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1732]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1750]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1726]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1752]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1760]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 177 locations, 47 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: 25.4s, OverallIterations: 23, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2932 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2038 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5891 IncrementalHoareTripleChecker+Invalid, 6155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 264 mSolverCounterUnsat, 174 mSDtfsCounter, 5891 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=747occurred in iteration=18, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 511 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 42/42 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 27 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:26:08,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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