./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:52:29,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:52:29,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:52:29,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:52:29,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:52:29,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:52:29,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:52:29,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:52:29,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:52:29,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:52:29,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:52:29,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:52:29,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:52:29,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:52:29,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:52:29,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:52:29,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:52:29,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:52:29,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:52:29,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:52:29,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:52:29,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:52:29,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:52:29,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:52:29,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:52:29,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:52:29,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:52:29,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:52:29,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:52:29,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:52:29,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:52:29,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:52:29,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:52:29,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:52:29,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:52:29,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:52:29,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:52:29,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:52:29,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:52:29,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:52:29,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:52:29,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:52:29,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:52:29,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:52:29,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:52:29,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:52:29,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:52:29,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:52:29,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:52:29,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:52:29,173 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:52:29,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:52:29,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:52:29,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:52:29,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:52:29,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:52:29,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:52:29,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:52:29,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:52:29,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:52:29,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:52:29,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:52:29,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:52:29,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:52:29,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:52:29,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:52:29,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:52:29,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:52:29,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:52:29,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:52:29,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:52:29,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:52:29,181 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:52:29,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:52:29,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:52:29,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2022-11-02 20:52:29,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:52:29,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:52:29,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:52:29,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:52:29,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:52:29,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-02 20:52:29,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/data/a19b40fca/088fa05dd5074b34bd17226482730fd1/FLAG4074cd06e [2022-11-02 20:52:30,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:52:30,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-02 20:52:30,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/data/a19b40fca/088fa05dd5074b34bd17226482730fd1/FLAG4074cd06e [2022-11-02 20:52:30,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/data/a19b40fca/088fa05dd5074b34bd17226482730fd1 [2022-11-02 20:52:30,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:52:30,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:52:30,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:30,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:52:30,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:52:30,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:30" (1/1) ... [2022-11-02 20:52:30,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef01d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:30, skipping insertion in model container [2022-11-02 20:52:30,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:30" (1/1) ... [2022-11-02 20:52:30,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:52:30,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:52:31,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-02 20:52:31,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:31,885 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:52:31,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-02 20:52:31,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:32,065 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:52:32,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32 WrapperNode [2022-11-02 20:52:32,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:32,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:32,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:52:32,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:52:32,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,157 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 201 [2022-11-02 20:52:32,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:32,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:52:32,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:52:32,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:52:32,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:52:32,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:52:32,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:52:32,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:52:32,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (1/1) ... [2022-11-02 20:52:32,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:52:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:32,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:32,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:52:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-11-02 20:52:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-11-02 20:52:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:52:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:52:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-11-02 20:52:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-11-02 20:52:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:52:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:52:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:52:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:52:32,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:52:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:52:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:52:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:52:32,320 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:52:32,790 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:52:32,792 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:52:33,132 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:52:33,141 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:52:33,142 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:52:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:33 BoogieIcfgContainer [2022-11-02 20:52:33,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:52:33,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:52:33,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:52:33,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:52:33,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:52:30" (1/3) ... [2022-11-02 20:52:33,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b978be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:52:33, skipping insertion in model container [2022-11-02 20:52:33,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:32" (2/3) ... [2022-11-02 20:52:33,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b978be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:52:33, skipping insertion in model container [2022-11-02 20:52:33,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:33" (3/3) ... [2022-11-02 20:52:33,158 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2022-11-02 20:52:33,169 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:52:33,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:52:33,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:52:33,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:52:33,305 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:52:33,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 301 places, 331 transitions, 692 flow [2022-11-02 20:52:33,482 INFO L130 PetriNetUnfolder]: 33/341 cut-off events. [2022-11-02 20:52:33,482 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:52:33,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 341 events. 33/341 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 853 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 228. Up to 11 conditions per place. [2022-11-02 20:52:33,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 331 transitions, 692 flow [2022-11-02 20:52:33,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 227 transitions, 471 flow [2022-11-02 20:52:33,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:52:33,529 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ae4689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:52:33,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 20:52:33,548 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-02 20:52:33,548 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:52:33,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:33,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:33,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -825968135, now seen corresponding path program 1 times [2022-11-02 20:52:33,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:33,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423387800] [2022-11-02 20:52:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:33,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:34,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423387800] [2022-11-02 20:52:34,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423387800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:34,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:34,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780041989] [2022-11-02 20:52:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:34,302 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-02 20:52:34,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 227 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:34,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:34,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-02 20:52:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:34,675 INFO L130 PetriNetUnfolder]: 68/616 cut-off events. [2022-11-02 20:52:34,675 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-02 20:52:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 616 events. 68/616 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2127 event pairs, 6 based on Foata normal form. 41/589 useless extension candidates. Maximal degree in co-relation 457. Up to 40 conditions per place. [2022-11-02 20:52:34,688 INFO L137 encePairwiseOnDemand]: 310/331 looper letters, 26 selfloop transitions, 12 changer transitions 0/221 dead transitions. [2022-11-02 20:52:34,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 221 transitions, 544 flow [2022-11-02 20:52:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:52:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:52:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2022-11-02 20:52:34,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8463530427276651 [2022-11-02 20:52:34,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2022-11-02 20:52:34,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2022-11-02 20:52:34,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:34,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2022-11-02 20:52:34,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:34,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:34,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:34,752 INFO L175 Difference]: Start difference. First operand has 212 places, 227 transitions, 471 flow. Second operand 7 states and 1961 transitions. [2022-11-02 20:52:34,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 221 transitions, 544 flow [2022-11-02 20:52:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 221 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:52:34,765 INFO L231 Difference]: Finished difference. Result has 210 places, 214 transitions, 476 flow [2022-11-02 20:52:34,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=210, PETRI_TRANSITIONS=214} [2022-11-02 20:52:34,772 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, -2 predicate places. [2022-11-02 20:52:34,773 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 476 flow [2022-11-02 20:52:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:34,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:34,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:52:34,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551677, now seen corresponding path program 1 times [2022-11-02 20:52:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:34,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255113598] [2022-11-02 20:52:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:35,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255113598] [2022-11-02 20:52:35,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255113598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:35,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:35,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:35,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351356664] [2022-11-02 20:52:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:35,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:35,043 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-02 20:52:35,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 214 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:35,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-02 20:52:35,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:35,288 INFO L130 PetriNetUnfolder]: 69/639 cut-off events. [2022-11-02 20:52:35,289 INFO L131 PetriNetUnfolder]: For 51/58 co-relation queries the response was YES. [2022-11-02 20:52:35,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 639 events. 69/639 cut-off events. For 51/58 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2303 event pairs, 10 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 457. Up to 58 conditions per place. [2022-11-02 20:52:35,295 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 25 selfloop transitions, 3 changer transitions 7/214 dead transitions. [2022-11-02 20:52:35,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 214 transitions, 542 flow [2022-11-02 20:52:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:52:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:52:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1662 transitions. [2022-11-02 20:52:35,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8368580060422961 [2022-11-02 20:52:35,300 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1662 transitions. [2022-11-02 20:52:35,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1662 transitions. [2022-11-02 20:52:35,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:35,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1662 transitions. [2022-11-02 20:52:35,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,312 INFO L175 Difference]: Start difference. First operand has 210 places, 214 transitions, 476 flow. Second operand 6 states and 1662 transitions. [2022-11-02 20:52:35,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 214 transitions, 542 flow [2022-11-02 20:52:35,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 214 transitions, 523 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:52:35,325 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 443 flow [2022-11-02 20:52:35,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2022-11-02 20:52:35,326 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, -4 predicate places. [2022-11-02 20:52:35,326 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 443 flow [2022-11-02 20:52:35,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:35,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:35,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:52:35,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -111987383, now seen corresponding path program 1 times [2022-11-02 20:52:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:35,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243359520] [2022-11-02 20:52:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243359520] [2022-11-02 20:52:35,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243359520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:35,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:35,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577577601] [2022-11-02 20:52:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:35,570 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-11-02 20:52:35,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:35,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-11-02 20:52:35,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:35,946 INFO L130 PetriNetUnfolder]: 114/936 cut-off events. [2022-11-02 20:52:35,946 INFO L131 PetriNetUnfolder]: For 69/81 co-relation queries the response was YES. [2022-11-02 20:52:35,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 936 events. 114/936 cut-off events. For 69/81 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4066 event pairs, 7 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 1073. Up to 51 conditions per place. [2022-11-02 20:52:35,958 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 47 selfloop transitions, 18 changer transitions 0/243 dead transitions. [2022-11-02 20:52:35,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 243 transitions, 678 flow [2022-11-02 20:52:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:52:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:52:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2548 transitions. [2022-11-02 20:52:35,977 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.855320577374958 [2022-11-02 20:52:35,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2548 transitions. [2022-11-02 20:52:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2548 transitions. [2022-11-02 20:52:35,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:35,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2548 transitions. [2022-11-02 20:52:35,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.1111111111111) internal successors, (2548), 9 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:35,997 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 443 flow. Second operand 9 states and 2548 transitions. [2022-11-02 20:52:35,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 243 transitions, 678 flow [2022-11-02 20:52:36,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 243 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:52:36,005 INFO L231 Difference]: Finished difference. Result has 211 places, 220 transitions, 576 flow [2022-11-02 20:52:36,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=211, PETRI_TRANSITIONS=220} [2022-11-02 20:52:36,006 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, -1 predicate places. [2022-11-02 20:52:36,006 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 220 transitions, 576 flow [2022-11-02 20:52:36,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.8) internal successors, (1389), 5 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:36,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:52:36,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1888992867, now seen corresponding path program 1 times [2022-11-02 20:52:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106821015] [2022-11-02 20:52:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:36,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:36,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106821015] [2022-11-02 20:52:36,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106821015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:36,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:36,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:36,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072944225] [2022-11-02 20:52:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:36,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:36,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:36,272 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-11-02 20:52:36,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 220 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:36,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-11-02 20:52:36,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:36,784 INFO L130 PetriNetUnfolder]: 255/1852 cut-off events. [2022-11-02 20:52:36,785 INFO L131 PetriNetUnfolder]: For 897/951 co-relation queries the response was YES. [2022-11-02 20:52:36,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 1852 events. 255/1852 cut-off events. For 897/951 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 12360 event pairs, 24 based on Foata normal form. 10/1710 useless extension candidates. Maximal degree in co-relation 1856. Up to 114 conditions per place. [2022-11-02 20:52:36,804 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 59 selfloop transitions, 37 changer transitions 0/285 dead transitions. [2022-11-02 20:52:36,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 285 transitions, 1082 flow [2022-11-02 20:52:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:52:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:52:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2596 transitions. [2022-11-02 20:52:36,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8714333669016449 [2022-11-02 20:52:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2596 transitions. [2022-11-02 20:52:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2596 transitions. [2022-11-02 20:52:36,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:36,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2596 transitions. [2022-11-02 20:52:36,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 288.44444444444446) internal successors, (2596), 9 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,826 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 331.0) internal successors, (3310), 10 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,826 INFO L175 Difference]: Start difference. First operand has 211 places, 220 transitions, 576 flow. Second operand 9 states and 2596 transitions. [2022-11-02 20:52:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 285 transitions, 1082 flow [2022-11-02 20:52:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 285 transitions, 1058 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-02 20:52:36,837 INFO L231 Difference]: Finished difference. Result has 225 places, 251 transitions, 904 flow [2022-11-02 20:52:36,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=904, PETRI_PLACES=225, PETRI_TRANSITIONS=251} [2022-11-02 20:52:36,838 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, 13 predicate places. [2022-11-02 20:52:36,839 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 251 transitions, 904 flow [2022-11-02 20:52:36,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:36,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:52:36,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -389135563, now seen corresponding path program 1 times [2022-11-02 20:52:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404996837] [2022-11-02 20:52:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:37,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:37,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404996837] [2022-11-02 20:52:37,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404996837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:37,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:37,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68744268] [2022-11-02 20:52:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:37,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:37,065 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-11-02 20:52:37,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 251 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:37,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-11-02 20:52:37,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:37,598 INFO L130 PetriNetUnfolder]: 264/1932 cut-off events. [2022-11-02 20:52:37,598 INFO L131 PetriNetUnfolder]: For 2546/2638 co-relation queries the response was YES. [2022-11-02 20:52:37,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 1932 events. 264/1932 cut-off events. For 2546/2638 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13023 event pairs, 31 based on Foata normal form. 6/1801 useless extension candidates. Maximal degree in co-relation 2679. Up to 202 conditions per place. [2022-11-02 20:52:37,620 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 59 selfloop transitions, 14 changer transitions 18/283 dead transitions. [2022-11-02 20:52:37,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 283 transitions, 1353 flow [2022-11-02 20:52:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:52:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:52:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2220 transitions. [2022-11-02 20:52:37,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8383685800604229 [2022-11-02 20:52:37,625 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2220 transitions. [2022-11-02 20:52:37,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2220 transitions. [2022-11-02 20:52:37,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:37,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2220 transitions. [2022-11-02 20:52:37,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.5) internal successors, (2220), 8 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,638 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 331.0) internal successors, (2979), 9 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,638 INFO L175 Difference]: Start difference. First operand has 225 places, 251 transitions, 904 flow. Second operand 8 states and 2220 transitions. [2022-11-02 20:52:37,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 283 transitions, 1353 flow [2022-11-02 20:52:37,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 283 transitions, 1309 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-11-02 20:52:37,653 INFO L231 Difference]: Finished difference. Result has 238 places, 255 transitions, 959 flow [2022-11-02 20:52:37,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=959, PETRI_PLACES=238, PETRI_TRANSITIONS=255} [2022-11-02 20:52:37,655 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, 26 predicate places. [2022-11-02 20:52:37,655 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 255 transitions, 959 flow [2022-11-02 20:52:37,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:37,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:37,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:52:37,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1149053716, now seen corresponding path program 1 times [2022-11-02 20:52:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:37,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860542043] [2022-11-02 20:52:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860542043] [2022-11-02 20:52:37,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860542043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:37,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:37,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277392511] [2022-11-02 20:52:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:37,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:37,834 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 331 [2022-11-02 20:52:37,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 255 transitions, 959 flow. Second operand has 5 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:37,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:37,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 331 [2022-11-02 20:52:37,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:38,774 INFO L130 PetriNetUnfolder]: 316/3322 cut-off events. [2022-11-02 20:52:38,774 INFO L131 PetriNetUnfolder]: For 2044/2182 co-relation queries the response was YES. [2022-11-02 20:52:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 3322 events. 316/3322 cut-off events. For 2044/2182 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27788 event pairs, 15 based on Foata normal form. 3/3100 useless extension candidates. Maximal degree in co-relation 5672. Up to 192 conditions per place. [2022-11-02 20:52:38,813 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 24 selfloop transitions, 8 changer transitions 0/270 dead transitions. [2022-11-02 20:52:38,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 270 transitions, 1067 flow [2022-11-02 20:52:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:52:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:52:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2062 transitions. [2022-11-02 20:52:38,821 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.889943892965041 [2022-11-02 20:52:38,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2062 transitions. [2022-11-02 20:52:38,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2062 transitions. [2022-11-02 20:52:38,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:38,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2062 transitions. [2022-11-02 20:52:38,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.57142857142856) internal successors, (2062), 7 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:38,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:38,833 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:38,833 INFO L175 Difference]: Start difference. First operand has 238 places, 255 transitions, 959 flow. Second operand 7 states and 2062 transitions. [2022-11-02 20:52:38,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 270 transitions, 1067 flow [2022-11-02 20:52:38,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 270 transitions, 1037 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-02 20:52:38,867 INFO L231 Difference]: Finished difference. Result has 245 places, 262 transitions, 987 flow [2022-11-02 20:52:38,868 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=987, PETRI_PLACES=245, PETRI_TRANSITIONS=262} [2022-11-02 20:52:38,871 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, 33 predicate places. [2022-11-02 20:52:38,872 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 262 transitions, 987 flow [2022-11-02 20:52:38,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:38,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:38,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:38,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:52:38,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1553188218, now seen corresponding path program 1 times [2022-11-02 20:52:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538161643] [2022-11-02 20:52:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538161643] [2022-11-02 20:52:39,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538161643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:39,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:39,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509827548] [2022-11-02 20:52:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:39,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:39,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:39,043 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 331 [2022-11-02 20:52:39,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 262 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:39,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:39,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 331 [2022-11-02 20:52:39,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:40,240 INFO L130 PetriNetUnfolder]: 384/4216 cut-off events. [2022-11-02 20:52:40,240 INFO L131 PetriNetUnfolder]: For 2431/2622 co-relation queries the response was YES. [2022-11-02 20:52:40,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 4216 events. 384/4216 cut-off events. For 2431/2622 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 38235 event pairs, 22 based on Foata normal form. 4/3964 useless extension candidates. Maximal degree in co-relation 6476. Up to 236 conditions per place. [2022-11-02 20:52:40,305 INFO L137 encePairwiseOnDemand]: 324/331 looper letters, 27 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-02 20:52:40,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 1112 flow [2022-11-02 20:52:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:52:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:52:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2073 transitions. [2022-11-02 20:52:40,312 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8946914113077256 [2022-11-02 20:52:40,312 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2073 transitions. [2022-11-02 20:52:40,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2073 transitions. [2022-11-02 20:52:40,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:40,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2073 transitions. [2022-11-02 20:52:40,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 296.14285714285717) internal successors, (2073), 7 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,326 INFO L175 Difference]: Start difference. First operand has 245 places, 262 transitions, 987 flow. Second operand 7 states and 2073 transitions. [2022-11-02 20:52:40,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 1112 flow [2022-11-02 20:52:40,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 282 transitions, 1112 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:52:40,422 INFO L231 Difference]: Finished difference. Result has 257 places, 270 transitions, 1055 flow [2022-11-02 20:52:40,423 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1055, PETRI_PLACES=257, PETRI_TRANSITIONS=270} [2022-11-02 20:52:40,424 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, 45 predicate places. [2022-11-02 20:52:40,424 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 1055 flow [2022-11-02 20:52:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:40,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:52:40,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1198564422, now seen corresponding path program 1 times [2022-11-02 20:52:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:40,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466030429] [2022-11-02 20:52:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:40,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:40,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466030429] [2022-11-02 20:52:40,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466030429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:40,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:40,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:52:40,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011810524] [2022-11-02 20:52:40,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:52:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:52:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:52:40,565 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 331 [2022-11-02 20:52:40,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 270 transitions, 1055 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:40,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 331 [2022-11-02 20:52:40,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:40,734 INFO L130 PetriNetUnfolder]: 51/679 cut-off events. [2022-11-02 20:52:40,735 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-11-02 20:52:40,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 679 events. 51/679 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2238 event pairs, 0 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 989. Up to 46 conditions per place. [2022-11-02 20:52:40,743 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 14 selfloop transitions, 2 changer transitions 42/223 dead transitions. [2022-11-02 20:52:40,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 223 transitions, 738 flow [2022-11-02 20:52:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:52:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:52:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2022-11-02 20:52:40,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8761329305135952 [2022-11-02 20:52:40,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2022-11-02 20:52:40,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2022-11-02 20:52:40,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:40,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2022-11-02 20:52:40,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,752 INFO L175 Difference]: Start difference. First operand has 257 places, 270 transitions, 1055 flow. Second operand 3 states and 870 transitions. [2022-11-02 20:52:40,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 223 transitions, 738 flow [2022-11-02 20:52:40,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 223 transitions, 651 flow, removed 19 selfloop flow, removed 22 redundant places. [2022-11-02 20:52:40,759 INFO L231 Difference]: Finished difference. Result has 228 places, 179 transitions, 488 flow [2022-11-02 20:52:40,760 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-11-02 20:52:40,763 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, 16 predicate places. [2022-11-02 20:52:40,763 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 488 flow [2022-11-02 20:52:40,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:52:40,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:40,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:52:40,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-02 20:52:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:40,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1539378401, now seen corresponding path program 1 times [2022-11-02 20:52:40,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:40,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328154846] [2022-11-02 20:52:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:52:40,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:40,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328154846] [2022-11-02 20:52:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328154846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:40,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:52:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655524944] [2022-11-02 20:52:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:40,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:52:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:52:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:40,996 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-11-02 20:52:40,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:40,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:52:40,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-11-02 20:52:40,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:52:41,194 INFO L130 PetriNetUnfolder]: 31/389 cut-off events. [2022-11-02 20:52:41,194 INFO L131 PetriNetUnfolder]: For 56/68 co-relation queries the response was YES. [2022-11-02 20:52:41,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 389 events. 31/389 cut-off events. For 56/68 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 612 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 537. Up to 22 conditions per place. [2022-11-02 20:52:41,198 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 0 selfloop transitions, 0 changer transitions 187/187 dead transitions. [2022-11-02 20:52:41,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 583 flow [2022-11-02 20:52:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:52:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:52:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2022-11-02 20:52:41,203 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8474320241691843 [2022-11-02 20:52:41,203 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2022-11-02 20:52:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2022-11-02 20:52:41,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:41,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2022-11-02 20:52:41,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:41,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:41,212 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:41,213 INFO L175 Difference]: Start difference. First operand has 228 places, 179 transitions, 488 flow. Second operand 6 states and 1683 transitions. [2022-11-02 20:52:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 583 flow [2022-11-02 20:52:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 187 transitions, 550 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-11-02 20:52:41,217 INFO L231 Difference]: Finished difference. Result has 187 places, 0 transitions, 0 flow [2022-11-02 20:52:41,217 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=187, PETRI_TRANSITIONS=0} [2022-11-02 20:52:41,218 INFO L287 CegarLoopForPetriNet]: 212 programPoint places, -25 predicate places. [2022-11-02 20:52:41,218 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 0 transitions, 0 flow [2022-11-02 20:52:41,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.2) internal successors, (1391), 5 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:41,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-11-02 20:52:41,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 12 remaining) [2022-11-02 20:52:41,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 12 remaining) [2022-11-02 20:52:41,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 12 remaining) [2022-11-02 20:52:41,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-11-02 20:52:41,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2022-11-02 20:52:41,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 12 remaining) [2022-11-02 20:52:41,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-11-02 20:52:41,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 12 remaining) [2022-11-02 20:52:41,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 12 remaining) [2022-11-02 20:52:41,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2022-11-02 20:52:41,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-02 20:52:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:52:41,232 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:41,238 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:52:41,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:52:41,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:52:41 BasicIcfg [2022-11-02 20:52:41,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:52:41,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:52:41,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:52:41,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:52:41,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:33" (3/4) ... [2022-11-02 20:52:41,252 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:52:41,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2022-11-02 20:52:41,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2022-11-02 20:52:41,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-02 20:52:41,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-02 20:52:41,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:52:41,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:52:41,309 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:52:41,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:52:41,310 INFO L158 Benchmark]: Toolchain (without parser) took 10691.16ms. Allocated memory was 109.1MB in the beginning and 364.9MB in the end (delta: 255.9MB). Free memory was 65.7MB in the beginning and 223.7MB in the end (delta: -158.0MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,310 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:52:41,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1446.20ms. Allocated memory is still 109.1MB. Free memory was 65.5MB in the beginning and 39.6MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.38ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 39.6MB in the beginning and 117.1MB in the end (delta: -77.5MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,312 INFO L158 Benchmark]: Boogie Preprocessor took 47.05ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 114.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,312 INFO L158 Benchmark]: RCFGBuilder took 930.47ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 88.9MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,312 INFO L158 Benchmark]: TraceAbstraction took 8097.25ms. Allocated memory was 142.6MB in the beginning and 364.9MB in the end (delta: 222.3MB). Free memory was 88.5MB in the beginning and 226.8MB in the end (delta: -138.3MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,313 INFO L158 Benchmark]: Witness Printer took 60.69ms. Allocated memory is still 364.9MB. Free memory was 226.8MB in the beginning and 223.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:52:41,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1446.20ms. Allocated memory is still 109.1MB. Free memory was 65.5MB in the beginning and 39.6MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.38ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 39.6MB in the beginning and 117.1MB in the end (delta: -77.5MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.05ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 114.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 930.47ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 88.9MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8097.25ms. Allocated memory was 142.6MB in the beginning and 364.9MB in the end (delta: 222.3MB). Free memory was 88.5MB in the beginning and 226.8MB in the end (delta: -138.3MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. * Witness Printer took 60.69ms. Allocated memory is still 364.9MB. Free memory was 226.8MB in the beginning and 223.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 328 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 355 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 316 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 443 IncrementalHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 149 mSDtfsCounter, 443 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1055occurred in iteration=7, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 750 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 23/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:52:41,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74369ff9-ea43-4eb0-8741-8935100a01af/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE