./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 eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:13:04,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:13:04,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:13:04,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:13:04,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:13:04,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:13:04,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:13:04,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:13:04,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:13:04,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:13:04,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:13:04,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:13:04,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:13:04,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:13:04,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:13:04,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:13:04,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:13:04,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:13:04,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:13:04,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:13:04,632 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:13:04,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:13:04,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:13:04,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:13:04,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:13:04,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:13:04,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:13:04,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:13:04,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:13:04,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:13:04,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:13:04,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:13:04,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:13:04,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:13:04,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:13:04,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:13:04,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:13:04,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:13:04,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:13:04,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:13:04,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:13:04,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:13:04,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:13:04,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:13:04,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:13:04,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:13:04,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:13:04,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:13:04,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:13:04,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:13:04,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:13:04,673 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:13:04,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:13:04,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:13:04,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:13:04,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:13:04,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:13:04,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:13:04,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:13:04,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:13:04,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:13:04,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:13:04,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:13:04,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:13:04,678 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2022-07-19 21:13:04,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:13:04,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:13:04,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:13:04,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:13:04,847 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:13:04,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-07-19 21:13:04,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade590676/1a5bfba0b1814a54a04a830733a9ba64/FLAG44fa3b071 [2022-07-19 21:13:05,377 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:13:05,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-07-19 21:13:05,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade590676/1a5bfba0b1814a54a04a830733a9ba64/FLAG44fa3b071 [2022-07-19 21:13:05,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade590676/1a5bfba0b1814a54a04a830733a9ba64 [2022-07-19 21:13:05,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:13:05,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:13:05,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:13:05,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:13:05,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:13:05,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:13:05" (1/1) ... [2022-07-19 21:13:05,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79920caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:05, skipping insertion in model container [2022-07-19 21:13:05,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:13:05" (1/1) ... [2022-07-19 21:13:05,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:13:05,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:13:06,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-07-19 21:13:06,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:13:06,095 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:13:06,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-07-19 21:13:06,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:13:06,223 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:13:06,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06 WrapperNode [2022-07-19 21:13:06,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:13:06,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:13:06,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:13:06,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:13:06,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,293 INFO L137 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 201 [2022-07-19 21:13:06,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:13:06,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:13:06,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:13:06,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:13:06,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:13:06,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:13:06,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:13:06,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:13:06,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (1/1) ... [2022-07-19 21:13:06,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:13:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:13:06,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:13:06,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:13:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-07-19 21:13:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-07-19 21:13:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:13:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-07-19 21:13:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:13:06,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:13:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:13:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:13:06,406 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:13:06,581 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:13:06,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:13:06,815 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:13:06,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:13:06,822 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 21:13:06,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:13:06 BoogieIcfgContainer [2022-07-19 21:13:06,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:13:06,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:13:06,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:13:06,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:13:06,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:13:05" (1/3) ... [2022-07-19 21:13:06,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e753db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:13:06, skipping insertion in model container [2022-07-19 21:13:06,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:13:06" (2/3) ... [2022-07-19 21:13:06,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e753db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:13:06, skipping insertion in model container [2022-07-19 21:13:06,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:13:06" (3/3) ... [2022-07-19 21:13:06,850 INFO L111 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2022-07-19 21:13:06,854 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:13:06,860 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:13:06,860 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-19 21:13:06,860 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:13:06,933 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-07-19 21:13:06,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 301 places, 331 transitions, 692 flow [2022-07-19 21:13:07,043 INFO L129 PetriNetUnfolder]: 33/341 cut-off events. [2022-07-19 21:13:07,043 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:13:07,049 INFO L84 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 854 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. [2022-07-19 21:13:07,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 331 transitions, 692 flow [2022-07-19 21:13:07,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 227 transitions, 471 flow [2022-07-19 21:13:07,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:13:07,070 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a18995d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3059e4e1 [2022-07-19 21:13:07,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-19 21:13:07,074 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-07-19 21:13:07,075 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:13:07,075 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:07,075 INFO L200 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] [2022-07-19 21:13:07,076 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)] === [2022-07-19 21:13:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash -825968135, now seen corresponding path program 1 times [2022-07-19 21:13:07,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:07,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109097406] [2022-07-19 21:13:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109097406] [2022-07-19 21:13:07,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109097406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:07,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559623278] [2022-07-19 21:13:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:07,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:07,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-07-19 21:13:07,442 INFO L92 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) [2022-07-19 21:13:07,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:07,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-07-19 21:13:07,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:07,642 INFO L129 PetriNetUnfolder]: 68/616 cut-off events. [2022-07-19 21:13:07,643 INFO L130 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-07-19 21:13:07,647 INFO L84 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 2129 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. [2022-07-19 21:13:07,650 INFO L132 encePairwiseOnDemand]: 310/331 looper letters, 26 selfloop transitions, 12 changer transitions 0/221 dead transitions. [2022-07-19 21:13:07,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 221 transitions, 544 flow [2022-07-19 21:13:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:13:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:13:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2022-07-19 21:13:07,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8463530427276651 [2022-07-19 21:13:07,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2022-07-19 21:13:07,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2022-07-19 21:13:07,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:07,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2022-07-19 21:13:07,686 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) [2022-07-19 21:13:07,695 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) [2022-07-19 21:13:07,697 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) [2022-07-19 21:13:07,698 INFO L186 Difference]: Start difference. First operand has 212 places, 227 transitions, 471 flow. Second operand 7 states and 1961 transitions. [2022-07-19 21:13:07,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 221 transitions, 544 flow [2022-07-19 21:13:07,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 221 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:13:07,708 INFO L242 Difference]: Finished difference. Result has 210 places, 214 transitions, 476 flow [2022-07-19 21:13:07,710 INFO L262 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} [2022-07-19 21:13:07,713 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -2 predicate places. [2022-07-19 21:13:07,713 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 476 flow [2022-07-19 21:13:07,714 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) [2022-07-19 21:13:07,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:07,715 INFO L200 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] [2022-07-19 21:13:07,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:13:07,715 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)] === [2022-07-19 21:13:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551677, now seen corresponding path program 1 times [2022-07-19 21:13:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:07,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079374578] [2022-07-19 21:13:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079374578] [2022-07-19 21:13:07,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079374578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:07,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:07,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151076518] [2022-07-19 21:13:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:07,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-07-19 21:13:07,859 INFO L92 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) [2022-07-19 21:13:07,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:07,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-07-19 21:13:07,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:08,002 INFO L129 PetriNetUnfolder]: 69/639 cut-off events. [2022-07-19 21:13:08,002 INFO L130 PetriNetUnfolder]: For 51/58 co-relation queries the response was YES. [2022-07-19 21:13:08,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 639 events. 69/639 cut-off events. For 51/58 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2300 event pairs, 10 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 457. Up to 58 conditions per place. [2022-07-19 21:13:08,008 INFO L132 encePairwiseOnDemand]: 323/331 looper letters, 25 selfloop transitions, 3 changer transitions 7/214 dead transitions. [2022-07-19 21:13:08,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 214 transitions, 542 flow [2022-07-19 21:13:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:13:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:13:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1662 transitions. [2022-07-19 21:13:08,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8368580060422961 [2022-07-19 21:13:08,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1662 transitions. [2022-07-19 21:13:08,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1662 transitions. [2022-07-19 21:13:08,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:08,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1662 transitions. [2022-07-19 21:13:08,015 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) [2022-07-19 21:13:08,018 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) [2022-07-19 21:13:08,019 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) [2022-07-19 21:13:08,019 INFO L186 Difference]: Start difference. First operand has 210 places, 214 transitions, 476 flow. Second operand 6 states and 1662 transitions. [2022-07-19 21:13:08,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 214 transitions, 542 flow [2022-07-19 21:13:08,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 214 transitions, 523 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:13:08,027 INFO L242 Difference]: Finished difference. Result has 208 places, 205 transitions, 443 flow [2022-07-19 21:13:08,028 INFO L262 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} [2022-07-19 21:13:08,029 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -4 predicate places. [2022-07-19 21:13:08,029 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 443 flow [2022-07-19 21:13:08,030 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) [2022-07-19 21:13:08,030 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:08,030 INFO L200 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] [2022-07-19 21:13:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:13:08,031 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)] === [2022-07-19 21:13:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -111987383, now seen corresponding path program 1 times [2022-07-19 21:13:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:08,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623705708] [2022-07-19 21:13:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:08,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:08,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623705708] [2022-07-19 21:13:08,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623705708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:08,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:08,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:08,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771067255] [2022-07-19 21:13:08,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:08,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-07-19 21:13:08,165 INFO L92 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) [2022-07-19 21:13:08,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:08,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-07-19 21:13:08,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:08,350 INFO L129 PetriNetUnfolder]: 114/936 cut-off events. [2022-07-19 21:13:08,351 INFO L130 PetriNetUnfolder]: For 69/81 co-relation queries the response was YES. [2022-07-19 21:13:08,355 INFO L84 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 4059 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. [2022-07-19 21:13:08,361 INFO L132 encePairwiseOnDemand]: 321/331 looper letters, 47 selfloop transitions, 18 changer transitions 0/243 dead transitions. [2022-07-19 21:13:08,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 243 transitions, 678 flow [2022-07-19 21:13:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:13:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:13:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2548 transitions. [2022-07-19 21:13:08,366 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.855320577374958 [2022-07-19 21:13:08,366 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2548 transitions. [2022-07-19 21:13:08,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2548 transitions. [2022-07-19 21:13:08,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:08,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2548 transitions. [2022-07-19 21:13:08,371 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) [2022-07-19 21:13:08,375 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) [2022-07-19 21:13:08,378 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) [2022-07-19 21:13:08,378 INFO L186 Difference]: Start difference. First operand has 208 places, 205 transitions, 443 flow. Second operand 9 states and 2548 transitions. [2022-07-19 21:13:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 243 transitions, 678 flow [2022-07-19 21:13:08,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 243 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:13:08,384 INFO L242 Difference]: Finished difference. Result has 211 places, 220 transitions, 576 flow [2022-07-19 21:13:08,384 INFO L262 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} [2022-07-19 21:13:08,386 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -1 predicate places. [2022-07-19 21:13:08,386 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 220 transitions, 576 flow [2022-07-19 21:13:08,387 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) [2022-07-19 21:13:08,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:08,388 INFO L200 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] [2022-07-19 21:13:08,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:13:08,388 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)] === [2022-07-19 21:13:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1888992867, now seen corresponding path program 1 times [2022-07-19 21:13:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:08,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852185031] [2022-07-19 21:13:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:08,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:08,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852185031] [2022-07-19 21:13:08,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852185031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:08,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:08,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951059004] [2022-07-19 21:13:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:08,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-07-19 21:13:08,502 INFO L92 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) [2022-07-19 21:13:08,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:08,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-07-19 21:13:08,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:08,769 INFO L129 PetriNetUnfolder]: 255/1852 cut-off events. [2022-07-19 21:13:08,769 INFO L130 PetriNetUnfolder]: For 897/951 co-relation queries the response was YES. [2022-07-19 21:13:08,778 INFO L84 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 12320 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. [2022-07-19 21:13:08,784 INFO L132 encePairwiseOnDemand]: 321/331 looper letters, 59 selfloop transitions, 37 changer transitions 0/285 dead transitions. [2022-07-19 21:13:08,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 285 transitions, 1082 flow [2022-07-19 21:13:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:13:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:13:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2596 transitions. [2022-07-19 21:13:08,789 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8714333669016449 [2022-07-19 21:13:08,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2596 transitions. [2022-07-19 21:13:08,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2596 transitions. [2022-07-19 21:13:08,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:08,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2596 transitions. [2022-07-19 21:13:08,798 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) [2022-07-19 21:13:08,802 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) [2022-07-19 21:13:08,803 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) [2022-07-19 21:13:08,803 INFO L186 Difference]: Start difference. First operand has 211 places, 220 transitions, 576 flow. Second operand 9 states and 2596 transitions. [2022-07-19 21:13:08,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 285 transitions, 1082 flow [2022-07-19 21:13:08,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 285 transitions, 1058 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-07-19 21:13:08,813 INFO L242 Difference]: Finished difference. Result has 225 places, 251 transitions, 904 flow [2022-07-19 21:13:08,814 INFO L262 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} [2022-07-19 21:13:08,815 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, 13 predicate places. [2022-07-19 21:13:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 251 transitions, 904 flow [2022-07-19 21:13:08,817 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) [2022-07-19 21:13:08,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:08,818 INFO L200 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] [2022-07-19 21:13:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:13:08,819 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)] === [2022-07-19 21:13:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1340542517, now seen corresponding path program 1 times [2022-07-19 21:13:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:08,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979794096] [2022-07-19 21:13:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979794096] [2022-07-19 21:13:08,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979794096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:08,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:08,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718352109] [2022-07-19 21:13:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:08,937 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2022-07-19 21:13:08,938 INFO L92 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) [2022-07-19 21:13:08,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:08,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2022-07-19 21:13:08,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:09,195 INFO L129 PetriNetUnfolder]: 264/1932 cut-off events. [2022-07-19 21:13:09,195 INFO L130 PetriNetUnfolder]: For 2544/2636 co-relation queries the response was YES. [2022-07-19 21:13:09,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 1932 events. 264/1932 cut-off events. For 2544/2636 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13001 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. [2022-07-19 21:13:09,207 INFO L132 encePairwiseOnDemand]: 323/331 looper letters, 59 selfloop transitions, 14 changer transitions 18/283 dead transitions. [2022-07-19 21:13:09,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 283 transitions, 1353 flow [2022-07-19 21:13:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:13:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:13:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2220 transitions. [2022-07-19 21:13:09,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8383685800604229 [2022-07-19 21:13:09,211 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2220 transitions. [2022-07-19 21:13:09,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2220 transitions. [2022-07-19 21:13:09,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:09,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2220 transitions. [2022-07-19 21:13:09,215 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) [2022-07-19 21:13:09,218 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) [2022-07-19 21:13:09,219 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) [2022-07-19 21:13:09,219 INFO L186 Difference]: Start difference. First operand has 225 places, 251 transitions, 904 flow. Second operand 8 states and 2220 transitions. [2022-07-19 21:13:09,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 283 transitions, 1353 flow [2022-07-19 21:13:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 283 transitions, 1309 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-19 21:13:09,228 INFO L242 Difference]: Finished difference. Result has 238 places, 255 transitions, 959 flow [2022-07-19 21:13:09,228 INFO L262 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} [2022-07-19 21:13:09,230 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, 26 predicate places. [2022-07-19 21:13:09,230 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 255 transitions, 959 flow [2022-07-19 21:13:09,231 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) [2022-07-19 21:13:09,231 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:09,231 INFO L200 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] [2022-07-19 21:13:09,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:13:09,232 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)] === [2022-07-19 21:13:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1149053716, now seen corresponding path program 1 times [2022-07-19 21:13:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:09,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278007726] [2022-07-19 21:13:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:09,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:09,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278007726] [2022-07-19 21:13:09,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278007726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:09,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:09,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399877336] [2022-07-19 21:13:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:09,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 331 [2022-07-19 21:13:09,311 INFO L92 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) [2022-07-19 21:13:09,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:09,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 331 [2022-07-19 21:13:09,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:09,804 INFO L129 PetriNetUnfolder]: 316/3322 cut-off events. [2022-07-19 21:13:09,804 INFO L130 PetriNetUnfolder]: For 2042/2180 co-relation queries the response was YES. [2022-07-19 21:13:09,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 3322 events. 316/3322 cut-off events. For 2042/2180 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27879 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. [2022-07-19 21:13:09,831 INFO L132 encePairwiseOnDemand]: 323/331 looper letters, 24 selfloop transitions, 8 changer transitions 0/270 dead transitions. [2022-07-19 21:13:09,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 270 transitions, 1067 flow [2022-07-19 21:13:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:13:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:13:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2062 transitions. [2022-07-19 21:13:09,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.889943892965041 [2022-07-19 21:13:09,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2062 transitions. [2022-07-19 21:13:09,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2062 transitions. [2022-07-19 21:13:09,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:09,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2062 transitions. [2022-07-19 21:13:09,838 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) [2022-07-19 21:13:09,841 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) [2022-07-19 21:13:09,842 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) [2022-07-19 21:13:09,842 INFO L186 Difference]: Start difference. First operand has 238 places, 255 transitions, 959 flow. Second operand 7 states and 2062 transitions. [2022-07-19 21:13:09,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 270 transitions, 1067 flow [2022-07-19 21:13:09,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 270 transitions, 1037 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-07-19 21:13:09,858 INFO L242 Difference]: Finished difference. Result has 245 places, 262 transitions, 987 flow [2022-07-19 21:13:09,859 INFO L262 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} [2022-07-19 21:13:09,861 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, 33 predicate places. [2022-07-19 21:13:09,861 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 262 transitions, 987 flow [2022-07-19 21:13:09,861 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) [2022-07-19 21:13:09,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:09,862 INFO L200 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] [2022-07-19 21:13:09,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:13:09,862 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)] === [2022-07-19 21:13:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1553188218, now seen corresponding path program 1 times [2022-07-19 21:13:09,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:09,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257462966] [2022-07-19 21:13:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257462966] [2022-07-19 21:13:09,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257462966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:09,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:09,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555744374] [2022-07-19 21:13:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:09,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 331 [2022-07-19 21:13:09,953 INFO L92 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) [2022-07-19 21:13:09,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:09,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 331 [2022-07-19 21:13:09,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:10,565 INFO L129 PetriNetUnfolder]: 384/4216 cut-off events. [2022-07-19 21:13:10,565 INFO L130 PetriNetUnfolder]: For 2428/2619 co-relation queries the response was YES. [2022-07-19 21:13:10,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 4216 events. 384/4216 cut-off events. For 2428/2619 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 38206 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. [2022-07-19 21:13:10,604 INFO L132 encePairwiseOnDemand]: 324/331 looper letters, 27 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-07-19 21:13:10,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 1112 flow [2022-07-19 21:13:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:13:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:13:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2073 transitions. [2022-07-19 21:13:10,608 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8946914113077256 [2022-07-19 21:13:10,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2073 transitions. [2022-07-19 21:13:10,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2073 transitions. [2022-07-19 21:13:10,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:10,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2073 transitions. [2022-07-19 21:13:10,612 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) [2022-07-19 21:13:10,614 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) [2022-07-19 21:13:10,615 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) [2022-07-19 21:13:10,615 INFO L186 Difference]: Start difference. First operand has 245 places, 262 transitions, 987 flow. Second operand 7 states and 2073 transitions. [2022-07-19 21:13:10,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 1112 flow [2022-07-19 21:13:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 282 transitions, 1112 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:13:10,637 INFO L242 Difference]: Finished difference. Result has 257 places, 270 transitions, 1055 flow [2022-07-19 21:13:10,637 INFO L262 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} [2022-07-19 21:13:10,638 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, 45 predicate places. [2022-07-19 21:13:10,638 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 1055 flow [2022-07-19 21:13:10,638 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) [2022-07-19 21:13:10,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:10,639 INFO L200 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] [2022-07-19 21:13:10,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:13:10,639 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)] === [2022-07-19 21:13:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1198564422, now seen corresponding path program 1 times [2022-07-19 21:13:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:10,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135902133] [2022-07-19 21:13:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:10,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:13:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:10,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135902133] [2022-07-19 21:13:10,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135902133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:10,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:10,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:13:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862260852] [2022-07-19 21:13:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:13:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:13:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:13:10,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 331 [2022-07-19 21:13:10,747 INFO L92 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) [2022-07-19 21:13:10,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:10,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 331 [2022-07-19 21:13:10,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:10,845 INFO L129 PetriNetUnfolder]: 51/679 cut-off events. [2022-07-19 21:13:10,845 INFO L130 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-07-19 21:13:10,850 INFO L84 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 2241 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. [2022-07-19 21:13:10,851 INFO L132 encePairwiseOnDemand]: 325/331 looper letters, 14 selfloop transitions, 2 changer transitions 42/223 dead transitions. [2022-07-19 21:13:10,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 223 transitions, 738 flow [2022-07-19 21:13:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:13:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:13:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2022-07-19 21:13:10,854 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8761329305135952 [2022-07-19 21:13:10,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2022-07-19 21:13:10,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2022-07-19 21:13:10,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:10,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2022-07-19 21:13:10,856 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) [2022-07-19 21:13:10,857 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) [2022-07-19 21:13:10,857 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) [2022-07-19 21:13:10,857 INFO L186 Difference]: Start difference. First operand has 257 places, 270 transitions, 1055 flow. Second operand 3 states and 870 transitions. [2022-07-19 21:13:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 223 transitions, 738 flow [2022-07-19 21:13:10,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 223 transitions, 651 flow, removed 19 selfloop flow, removed 22 redundant places. [2022-07-19 21:13:10,862 INFO L242 Difference]: Finished difference. Result has 228 places, 179 transitions, 488 flow [2022-07-19 21:13:10,863 INFO L262 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} [2022-07-19 21:13:10,863 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, 16 predicate places. [2022-07-19 21:13:10,863 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 488 flow [2022-07-19 21:13:10,864 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) [2022-07-19 21:13:10,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:13:10,864 INFO L200 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] [2022-07-19 21:13:10,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:13:10,865 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)] === [2022-07-19 21:13:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:13:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1028844224, now seen corresponding path program 1 times [2022-07-19 21:13:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:13:10,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621474186] [2022-07-19 21:13:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:13:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:13:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:13:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 21:13:10,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:13:10,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621474186] [2022-07-19 21:13:10,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621474186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:13:10,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:13:10,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:13:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991725271] [2022-07-19 21:13:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:13:10,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:13:10,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:13:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:13:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:13:10,933 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-07-19 21:13:10,934 INFO L92 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) [2022-07-19 21:13:10,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:13:10,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-07-19 21:13:10,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:13:11,010 INFO L129 PetriNetUnfolder]: 31/389 cut-off events. [2022-07-19 21:13:11,010 INFO L130 PetriNetUnfolder]: For 56/68 co-relation queries the response was YES. [2022-07-19 21:13:11,013 INFO L84 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. [2022-07-19 21:13:11,014 INFO L132 encePairwiseOnDemand]: 325/331 looper letters, 0 selfloop transitions, 0 changer transitions 187/187 dead transitions. [2022-07-19 21:13:11,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 583 flow [2022-07-19 21:13:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:13:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:13:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2022-07-19 21:13:11,017 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8474320241691843 [2022-07-19 21:13:11,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2022-07-19 21:13:11,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2022-07-19 21:13:11,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:13:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2022-07-19 21:13:11,021 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) [2022-07-19 21:13:11,023 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) [2022-07-19 21:13:11,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 331.0) internal successors, (2317), 7 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:13:11,024 INFO L186 Difference]: Start difference. First operand has 228 places, 179 transitions, 488 flow. Second operand 6 states and 1683 transitions. [2022-07-19 21:13:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 583 flow [2022-07-19 21:13:11,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 187 transitions, 550 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-07-19 21:13:11,027 INFO L242 Difference]: Finished difference. Result has 187 places, 0 transitions, 0 flow [2022-07-19 21:13:11,027 INFO L262 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} [2022-07-19 21:13:11,028 INFO L279 CegarLoopForPetriNet]: 212 programPoint places, -25 predicate places. [2022-07-19 21:13:11,028 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 0 transitions, 0 flow [2022-07-19 21:13:11,028 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) [2022-07-19 21:13:11,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2022-07-19 21:13:11,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 12 remaining) [2022-07-19 21:13:11,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-07-19 21:13:11,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 12 remaining) [2022-07-19 21:13:11,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 12 remaining) [2022-07-19 21:13:11,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2022-07-19 21:13:11,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-07-19 21:13:11,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:13:11,033 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:13:11,036 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:13:11,037 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:13:11,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:13:11 BasicIcfg [2022-07-19 21:13:11,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:13:11,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:13:11,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:13:11,041 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:13:11,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:13:06" (3/4) ... [2022-07-19 21:13:11,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:13:11,049 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2022-07-19 21:13:11,049 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2022-07-19 21:13:11,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-19 21:13:11,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 21:13:11,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:13:11,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:13:11,075 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:13:11,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:13:11,076 INFO L158 Benchmark]: Toolchain (without parser) took 5654.37ms. Allocated memory was 144.7MB in the beginning and 539.0MB in the end (delta: 394.3MB). Free memory was 108.0MB in the beginning and 285.5MB in the end (delta: -177.5MB). Peak memory consumption was 216.0MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,076 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:13:11,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 801.50ms. Allocated memory is still 144.7MB. Free memory was 107.8MB in the beginning and 73.4MB in the end (delta: 34.4MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.69ms. Allocated memory is still 144.7MB. Free memory was 73.4MB in the beginning and 69.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,077 INFO L158 Benchmark]: Boogie Preprocessor took 30.99ms. Allocated memory is still 144.7MB. Free memory was 69.2MB in the beginning and 67.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,077 INFO L158 Benchmark]: RCFGBuilder took 498.59ms. Allocated memory is still 144.7MB. Free memory was 67.1MB in the beginning and 45.3MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,077 INFO L158 Benchmark]: TraceAbstraction took 4215.07ms. Allocated memory was 144.7MB in the beginning and 539.0MB in the end (delta: 394.3MB). Free memory was 44.8MB in the beginning and 288.7MB in the end (delta: -243.8MB). Peak memory consumption was 150.4MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,078 INFO L158 Benchmark]: Witness Printer took 34.94ms. Allocated memory is still 539.0MB. Free memory was 288.7MB in the beginning and 285.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:13:11,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 801.50ms. Allocated memory is still 144.7MB. Free memory was 107.8MB in the beginning and 73.4MB in the end (delta: 34.4MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.69ms. Allocated memory is still 144.7MB. Free memory was 73.4MB in the beginning and 69.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.99ms. Allocated memory is still 144.7MB. Free memory was 69.2MB in the beginning and 67.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.59ms. Allocated memory is still 144.7MB. Free memory was 67.1MB in the beginning and 45.3MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4215.07ms. Allocated memory was 144.7MB in the beginning and 539.0MB in the end (delta: 394.3MB). Free memory was 44.8MB in the beginning and 288.7MB in the end (delta: -243.8MB). Peak memory consumption was 150.4MB. Max. memory is 16.1GB. * Witness Printer took 34.94ms. Allocated memory is still 539.0MB. Free memory was 288.7MB in the beginning and 285.5MB 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: 4.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 355 SdHoareTripleChecker+Invalid, 0.2s 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, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.6s 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! [2022-07-19 21:13:11,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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