./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:29:32,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:29:32,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:29:32,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:29:32,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:29:32,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:29:32,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:29:32,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:29:32,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:29:32,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:29:32,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:29:32,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:29:32,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:29:32,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:29:32,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:29:32,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:29:32,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:29:32,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:29:32,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:29:32,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:29:32,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:29:32,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:29:32,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:29:32,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:29:32,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:29:32,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:29:32,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:29:32,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:29:32,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:29:32,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:29:32,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:29:32,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:29:32,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:29:32,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:29:32,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:29:32,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:29:32,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:29:32,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:29:32,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:29:32,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:29:32,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:29:32,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:29:32,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:29:32,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:29:32,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:29:32,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:29:32,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:29:32,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:29:32,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:29:32,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:29:32,934 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:29:32,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:29:32,935 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:29:32,935 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:29:32,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:29:32,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:29:32,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:29:32,936 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:29:32,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:29:32,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:29:32,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:29:32,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:29:32,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:29:32,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:29:32,938 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:29:32,939 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:29:33,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:29:33,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:29:33,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:29:33,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:29:33,184 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:29:33,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-30 03:29:34,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:29:34,431 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:29:34,432 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-30 03:29:34,447 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6028afb42/e51c6ffc57694e6db8b0b2103fe69383/FLAGd7b5cd3b4 [2023-08-30 03:29:34,461 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6028afb42/e51c6ffc57694e6db8b0b2103fe69383 [2023-08-30 03:29:34,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:29:34,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:29:34,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:29:34,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:29:34,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:29:34,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:29:34" (1/1) ... [2023-08-30 03:29:34,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c91e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:34, skipping insertion in model container [2023-08-30 03:29:34,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:29:34" (1/1) ... [2023-08-30 03:29:34,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:29:34,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:29:35,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-30 03:29:35,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:29:35,101 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:29:35,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-30 03:29:35,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:29:35,231 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:29:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35 WrapperNode [2023-08-30 03:29:35,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:29:35,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:29:35,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:29:35,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:29:35,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,277 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 205 [2023-08-30 03:29:35,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:29:35,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:29:35,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:29:35,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:29:35,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:29:35,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:29:35,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:29:35,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:29:35,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (1/1) ... [2023-08-30 03:29:35,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:29:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:29:35,369 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) [2023-08-30 03:29:35,380 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 [2023-08-30 03:29:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-30 03:29:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-30 03:29:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:29:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:29:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-30 03:29:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-30 03:29:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:29:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:29:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:29:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:29:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:29:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:29:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:29:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:29:35,398 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:29:35,595 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:29:35,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:29:35,832 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:29:35,837 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:29:35,838 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 03:29:35,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:29:35 BoogieIcfgContainer [2023-08-30 03:29:35,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:29:35,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:29:35,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:29:35,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:29:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:29:34" (1/3) ... [2023-08-30 03:29:35,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c059e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:29:35, skipping insertion in model container [2023-08-30 03:29:35,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:29:35" (2/3) ... [2023-08-30 03:29:35,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c059e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:29:35, skipping insertion in model container [2023-08-30 03:29:35,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:29:35" (3/3) ... [2023-08-30 03:29:35,845 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-30 03:29:35,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:29:35,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-30 03:29:35,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:29:35,944 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-30 03:29:35,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 324 transitions, 678 flow [2023-08-30 03:29:36,078 INFO L130 PetriNetUnfolder]: 33/339 cut-off events. [2023-08-30 03:29:36,082 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 03:29:36,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 339 events. 33/339 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 913 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2023-08-30 03:29:36,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 324 transitions, 678 flow [2023-08-30 03:29:36,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 227 transitions, 471 flow [2023-08-30 03:29:36,098 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:29:36,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 227 transitions, 471 flow [2023-08-30 03:29:36,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 227 transitions, 471 flow [2023-08-30 03:29:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 227 transitions, 471 flow [2023-08-30 03:29:36,149 INFO L130 PetriNetUnfolder]: 33/339 cut-off events. [2023-08-30 03:29:36,151 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 03:29:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 339 events. 33/339 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 917 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2023-08-30 03:29:36,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 10740 [2023-08-30 03:29:42,083 INFO L134 LiptonReduction]: Checked pairs total: 17413 [2023-08-30 03:29:42,083 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-08-30 03:29:42,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:29:42,104 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@130c2f46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:29:42,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 03:29:42,105 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:29:42,106 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:29:42,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:42,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:29:42,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:42,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 991, now seen corresponding path program 1 times [2023-08-30 03:29:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841193533] [2023-08-30 03:29:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841193533] [2023-08-30 03:29:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841193533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:29:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686398969] [2023-08-30 03:29:42,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:29:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:29:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:29:42,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 597 [2023-08-30 03:29:42,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 294.5) internal successors, (589), 2 states have internal predecessors, (589), 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) [2023-08-30 03:29:42,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:42,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 597 [2023-08-30 03:29:42,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:42,508 INFO L130 PetriNetUnfolder]: 746/1231 cut-off events. [2023-08-30 03:29:42,508 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 03:29:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1231 events. 746/1231 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6079 event pairs, 435 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 2173. Up to 1085 conditions per place. [2023-08-30 03:29:42,514 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 34 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-08-30 03:29:42,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 183 flow [2023-08-30 03:29:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:29:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:29:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 627 transitions. [2023-08-30 03:29:42,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251256281407035 [2023-08-30 03:29:42,526 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 627 transitions. [2023-08-30 03:29:42,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 627 transitions. [2023-08-30 03:29:42,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:42,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 627 transitions. [2023-08-30 03:29:42,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.5) internal successors, (627), 2 states have internal predecessors, (627), 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) [2023-08-30 03:29:42,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 597.0) internal successors, (1791), 3 states have internal predecessors, (1791), 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) [2023-08-30 03:29:42,536 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 597.0) internal successors, (1791), 3 states have internal predecessors, (1791), 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) [2023-08-30 03:29:42,537 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 125 flow. Second operand 2 states and 627 transitions. [2023-08-30 03:29:42,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 183 flow [2023-08-30 03:29:42,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:42,541 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 111 flow [2023-08-30 03:29:42,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=111, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-30 03:29:42,544 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-30 03:29:42,545 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 111 flow [2023-08-30 03:29:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 294.5) internal successors, (589), 2 states have internal predecessors, (589), 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) [2023-08-30 03:29:42,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:42,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:29:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:29:42,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:42,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:42,546 INFO L85 PathProgramCache]: Analyzing trace with hash 983226, now seen corresponding path program 1 times [2023-08-30 03:29:42,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412728838] [2023-08-30 03:29:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412728838] [2023-08-30 03:29:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412728838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:29:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553323592] [2023-08-30 03:29:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:42,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 597 [2023-08-30 03:29:42,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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) [2023-08-30 03:29:42,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:42,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 597 [2023-08-30 03:29:42,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:42,900 INFO L130 PetriNetUnfolder]: 1786/2917 cut-off events. [2023-08-30 03:29:42,901 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 03:29:42,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5532 conditions, 2917 events. 1786/2917 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15537 event pairs, 619 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 5528. Up to 1466 conditions per place. [2023-08-30 03:29:42,911 INFO L137 encePairwiseOnDemand]: 589/597 looper letters, 57 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-08-30 03:29:42,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 304 flow [2023-08-30 03:29:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 03:29:42,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120044667783361 [2023-08-30 03:29:42,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 03:29:42,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 03:29:42,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:42,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 03:29:42,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 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) [2023-08-30 03:29:42,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:42,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:42,922 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 111 flow. Second operand 3 states and 917 transitions. [2023-08-30 03:29:42,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 304 flow [2023-08-30 03:29:42,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:29:42,925 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 161 flow [2023-08-30 03:29:42,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-08-30 03:29:42,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-30 03:29:42,926 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 161 flow [2023-08-30 03:29:42,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 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) [2023-08-30 03:29:42,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:42,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:29:42,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:29:42,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:42,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 984037, now seen corresponding path program 1 times [2023-08-30 03:29:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459134289] [2023-08-30 03:29:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459134289] [2023-08-30 03:29:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459134289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:43,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:43,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122622092] [2023-08-30 03:29:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:43,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:43,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 597 [2023-08-30 03:29:43,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-08-30 03:29:43,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:43,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 597 [2023-08-30 03:29:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:43,159 INFO L130 PetriNetUnfolder]: 1426/2276 cut-off events. [2023-08-30 03:29:43,161 INFO L131 PetriNetUnfolder]: For 532/585 co-relation queries the response was YES. [2023-08-30 03:29:43,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4900 conditions, 2276 events. 1426/2276 cut-off events. For 532/585 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11161 event pairs, 691 based on Foata normal form. 5/1261 useless extension candidates. Maximal degree in co-relation 4894. Up to 2040 conditions per place. [2023-08-30 03:29:43,170 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 37 selfloop transitions, 0 changer transitions 2/55 dead transitions. [2023-08-30 03:29:43,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 241 flow [2023-08-30 03:29:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 903 transitions. [2023-08-30 03:29:43,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041876046901173 [2023-08-30 03:29:43,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 903 transitions. [2023-08-30 03:29:43,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 903 transitions. [2023-08-30 03:29:43,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:43,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 903 transitions. [2023-08-30 03:29:43,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 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) [2023-08-30 03:29:43,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,177 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 161 flow. Second operand 3 states and 903 transitions. [2023-08-30 03:29:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 241 flow [2023-08-30 03:29:43,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:43,182 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 147 flow [2023-08-30 03:29:43,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-08-30 03:29:43,183 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 03:29:43,183 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 147 flow [2023-08-30 03:29:43,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-08-30 03:29:43,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:43,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:29:43,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:29:43,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:43,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash 30388763, now seen corresponding path program 1 times [2023-08-30 03:29:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:43,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739431835] [2023-08-30 03:29:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:43,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:43,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739431835] [2023-08-30 03:29:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739431835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:43,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:29:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615241888] [2023-08-30 03:29:43,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:43,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 597 [2023-08-30 03:29:43,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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) [2023-08-30 03:29:43,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:43,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 597 [2023-08-30 03:29:43,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:43,423 INFO L130 PetriNetUnfolder]: 1297/2060 cut-off events. [2023-08-30 03:29:43,423 INFO L131 PetriNetUnfolder]: For 431/481 co-relation queries the response was YES. [2023-08-30 03:29:43,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4458 conditions, 2060 events. 1297/2060 cut-off events. For 431/481 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9869 event pairs, 615 based on Foata normal form. 48/1210 useless extension candidates. Maximal degree in co-relation 4451. Up to 1850 conditions per place. [2023-08-30 03:29:43,433 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 35 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 03:29:43,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 215 flow [2023-08-30 03:29:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-08-30 03:29:43,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503070910106086 [2023-08-30 03:29:43,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-08-30 03:29:43,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-08-30 03:29:43,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:43,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-08-30 03:29:43,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 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) [2023-08-30 03:29:43,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,441 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 147 flow. Second operand 3 states and 901 transitions. [2023-08-30 03:29:43,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 215 flow [2023-08-30 03:29:43,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 211 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:43,444 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 141 flow [2023-08-30 03:29:43,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-08-30 03:29:43,446 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-30 03:29:43,446 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 141 flow [2023-08-30 03:29:43,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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) [2023-08-30 03:29:43,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:43,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:29:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:29:43,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:43,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash 30388764, now seen corresponding path program 1 times [2023-08-30 03:29:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:43,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982655231] [2023-08-30 03:29:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982655231] [2023-08-30 03:29:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982655231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:43,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:29:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087937646] [2023-08-30 03:29:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:43,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 597 [2023-08-30 03:29:43,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-30 03:29:43,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:43,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 597 [2023-08-30 03:29:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:43,753 INFO L130 PetriNetUnfolder]: 1631/2634 cut-off events. [2023-08-30 03:29:43,753 INFO L131 PetriNetUnfolder]: For 322/470 co-relation queries the response was YES. [2023-08-30 03:29:43,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 2634 events. 1631/2634 cut-off events. For 322/470 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13613 event pairs, 652 based on Foata normal form. 100/1650 useless extension candidates. Maximal degree in co-relation 5532. Up to 1470 conditions per place. [2023-08-30 03:29:43,762 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 64 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-30 03:29:43,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 363 flow [2023-08-30 03:29:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-08-30 03:29:43,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159128978224455 [2023-08-30 03:29:43,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-08-30 03:29:43,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-08-30 03:29:43,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:43,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-08-30 03:29:43,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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) [2023-08-30 03:29:43,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:43,770 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 141 flow. Second operand 3 states and 924 transitions. [2023-08-30 03:29:43,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 363 flow [2023-08-30 03:29:43,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:43,771 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 172 flow [2023-08-30 03:29:43,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2023-08-30 03:29:43,772 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 03:29:43,772 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 172 flow [2023-08-30 03:29:43,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-30 03:29:43,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:43,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:29:43,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:29:43,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:43,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 942098064, now seen corresponding path program 1 times [2023-08-30 03:29:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:43,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760004705] [2023-08-30 03:29:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760004705] [2023-08-30 03:29:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760004705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:43,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:43,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643487462] [2023-08-30 03:29:43,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:29:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:29:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:29:43,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 597 [2023-08-30 03:29:43,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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) [2023-08-30 03:29:43,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:43,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 597 [2023-08-30 03:29:43,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:44,191 INFO L130 PetriNetUnfolder]: 2069/3326 cut-off events. [2023-08-30 03:29:44,192 INFO L131 PetriNetUnfolder]: For 375/512 co-relation queries the response was YES. [2023-08-30 03:29:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 3326 events. 2069/3326 cut-off events. For 375/512 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18237 event pairs, 804 based on Foata normal form. 52/2032 useless extension candidates. Maximal degree in co-relation 7045. Up to 1682 conditions per place. [2023-08-30 03:29:44,208 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 88 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2023-08-30 03:29:44,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 108 transitions, 510 flow [2023-08-30 03:29:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:29:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:29:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1233 transitions. [2023-08-30 03:29:44,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163316582914573 [2023-08-30 03:29:44,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1233 transitions. [2023-08-30 03:29:44,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1233 transitions. [2023-08-30 03:29:44,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:44,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1233 transitions. [2023-08-30 03:29:44,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 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) [2023-08-30 03:29:44,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:44,217 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:44,217 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 172 flow. Second operand 4 states and 1233 transitions. [2023-08-30 03:29:44,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 108 transitions, 510 flow [2023-08-30 03:29:44,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 108 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:44,220 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 216 flow [2023-08-30 03:29:44,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-08-30 03:29:44,222 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 03:29:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 216 flow [2023-08-30 03:29:44,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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) [2023-08-30 03:29:44,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:44,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:29:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:29:44,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:44,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 942098065, now seen corresponding path program 1 times [2023-08-30 03:29:44,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:44,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993295741] [2023-08-30 03:29:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993295741] [2023-08-30 03:29:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993295741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:44,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774008267] [2023-08-30 03:29:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:44,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:29:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:29:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:29:44,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 597 [2023-08-30 03:29:44,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 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) [2023-08-30 03:29:44,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:44,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 597 [2023-08-30 03:29:44,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:44,591 INFO L130 PetriNetUnfolder]: 1663/2711 cut-off events. [2023-08-30 03:29:44,591 INFO L131 PetriNetUnfolder]: For 471/610 co-relation queries the response was YES. [2023-08-30 03:29:44,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5866 conditions, 2711 events. 1663/2711 cut-off events. For 471/610 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14313 event pairs, 830 based on Foata normal form. 153/1792 useless extension candidates. Maximal degree in co-relation 5856. Up to 2426 conditions per place. [2023-08-30 03:29:44,597 INFO L137 encePairwiseOnDemand]: 595/597 looper letters, 40 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 03:29:44,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 296 flow [2023-08-30 03:29:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-30 03:29:44,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058626465661642 [2023-08-30 03:29:44,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-30 03:29:44,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-30 03:29:44,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:44,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-30 03:29:44,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 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) [2023-08-30 03:29:44,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:44,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:44,604 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 216 flow. Second operand 3 states and 906 transitions. [2023-08-30 03:29:44,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 296 flow [2023-08-30 03:29:44,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:44,605 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 212 flow [2023-08-30 03:29:44,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-08-30 03:29:44,606 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 03:29:44,606 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 212 flow [2023-08-30 03:29:44,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 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) [2023-08-30 03:29:44,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:44,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:29:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:29:44,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:44,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -861160068, now seen corresponding path program 1 times [2023-08-30 03:29:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757768008] [2023-08-30 03:29:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:44,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757768008] [2023-08-30 03:29:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757768008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695428246] [2023-08-30 03:29:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:44,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:29:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:29:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:29:44,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 597 [2023-08-30 03:29:44,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 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) [2023-08-30 03:29:44,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:44,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 597 [2023-08-30 03:29:44,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:44,998 INFO L130 PetriNetUnfolder]: 2100/3409 cut-off events. [2023-08-30 03:29:44,998 INFO L131 PetriNetUnfolder]: For 502/700 co-relation queries the response was YES. [2023-08-30 03:29:45,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 3409 events. 2100/3409 cut-off events. For 502/700 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18581 event pairs, 583 based on Foata normal form. 72/2278 useless extension candidates. Maximal degree in co-relation 7385. Up to 1532 conditions per place. [2023-08-30 03:29:45,012 INFO L137 encePairwiseOnDemand]: 588/597 looper letters, 79 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2023-08-30 03:29:45,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 105 transitions, 526 flow [2023-08-30 03:29:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:29:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:29:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1497 transitions. [2023-08-30 03:29:45,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015075376884423 [2023-08-30 03:29:45,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1497 transitions. [2023-08-30 03:29:45,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1497 transitions. [2023-08-30 03:29:45,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:45,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1497 transitions. [2023-08-30 03:29:45,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 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) [2023-08-30 03:29:45,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 597.0) internal successors, (3582), 6 states have internal predecessors, (3582), 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) [2023-08-30 03:29:45,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 597.0) internal successors, (3582), 6 states have internal predecessors, (3582), 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) [2023-08-30 03:29:45,021 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 212 flow. Second operand 5 states and 1497 transitions. [2023-08-30 03:29:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 105 transitions, 526 flow [2023-08-30 03:29:45,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:45,024 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 295 flow [2023-08-30 03:29:45,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-08-30 03:29:45,025 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-30 03:29:45,025 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 295 flow [2023-08-30 03:29:45,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 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) [2023-08-30 03:29:45,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:45,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:45,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:29:45,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:45,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash -928331867, now seen corresponding path program 1 times [2023-08-30 03:29:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:45,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658647179] [2023-08-30 03:29:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658647179] [2023-08-30 03:29:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658647179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:45,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926246170] [2023-08-30 03:29:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:45,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:45,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 597 [2023-08-30 03:29:45,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2023-08-30 03:29:45,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:45,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 597 [2023-08-30 03:29:45,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:45,320 INFO L130 PetriNetUnfolder]: 1946/3247 cut-off events. [2023-08-30 03:29:45,321 INFO L131 PetriNetUnfolder]: For 1885/2108 co-relation queries the response was YES. [2023-08-30 03:29:45,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8698 conditions, 3247 events. 1946/3247 cut-off events. For 1885/2108 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18293 event pairs, 684 based on Foata normal form. 101/2751 useless extension candidates. Maximal degree in co-relation 8684. Up to 2207 conditions per place. [2023-08-30 03:29:45,336 INFO L137 encePairwiseOnDemand]: 589/597 looper letters, 52 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-30 03:29:45,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 483 flow [2023-08-30 03:29:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 03:29:45,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919039642657733 [2023-08-30 03:29:45,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 03:29:45,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 03:29:45,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:45,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 03:29:45,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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) [2023-08-30 03:29:45,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,345 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 295 flow. Second operand 3 states and 881 transitions. [2023-08-30 03:29:45,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 483 flow [2023-08-30 03:29:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 483 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:29:45,351 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 377 flow [2023-08-30 03:29:45,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-08-30 03:29:45,352 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-30 03:29:45,352 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 377 flow [2023-08-30 03:29:45,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2023-08-30 03:29:45,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:45,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:29:45,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:45,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1367450956, now seen corresponding path program 1 times [2023-08-30 03:29:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:45,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063831368] [2023-08-30 03:29:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:45,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063831368] [2023-08-30 03:29:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063831368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:45,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:45,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41585461] [2023-08-30 03:29:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:45,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:45,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 597 [2023-08-30 03:29:45,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 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) [2023-08-30 03:29:45,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:45,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 597 [2023-08-30 03:29:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:45,662 INFO L130 PetriNetUnfolder]: 2185/3501 cut-off events. [2023-08-30 03:29:45,663 INFO L131 PetriNetUnfolder]: For 3357/3593 co-relation queries the response was YES. [2023-08-30 03:29:45,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 3501 events. 2185/3501 cut-off events. For 3357/3593 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18396 event pairs, 475 based on Foata normal form. 245/3150 useless extension candidates. Maximal degree in co-relation 10648. Up to 1635 conditions per place. [2023-08-30 03:29:45,694 INFO L137 encePairwiseOnDemand]: 589/597 looper letters, 71 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2023-08-30 03:29:45,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 748 flow [2023-08-30 03:29:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 03:29:45,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103294249022893 [2023-08-30 03:29:45,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 03:29:45,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 03:29:45,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:45,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 03:29:45,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 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) [2023-08-30 03:29:45,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,700 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 377 flow. Second operand 3 states and 914 transitions. [2023-08-30 03:29:45,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 748 flow [2023-08-30 03:29:45,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:45,705 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 539 flow [2023-08-30 03:29:45,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2023-08-30 03:29:45,705 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2023-08-30 03:29:45,705 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 539 flow [2023-08-30 03:29:45,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 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) [2023-08-30 03:29:45,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:45,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:45,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:29:45,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:45,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1245175103, now seen corresponding path program 1 times [2023-08-30 03:29:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100832285] [2023-08-30 03:29:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100832285] [2023-08-30 03:29:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100832285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:45,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693990998] [2023-08-30 03:29:45,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:45,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:45,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 597 [2023-08-30 03:29:45,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2023-08-30 03:29:45,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:45,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 597 [2023-08-30 03:29:45,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:45,893 INFO L130 PetriNetUnfolder]: 1169/1896 cut-off events. [2023-08-30 03:29:45,893 INFO L131 PetriNetUnfolder]: For 3299/3330 co-relation queries the response was YES. [2023-08-30 03:29:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6199 conditions, 1896 events. 1169/1896 cut-off events. For 3299/3330 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9126 event pairs, 266 based on Foata normal form. 154/1735 useless extension candidates. Maximal degree in co-relation 6182. Up to 1248 conditions per place. [2023-08-30 03:29:45,900 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 95 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2023-08-30 03:29:45,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 962 flow [2023-08-30 03:29:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 918 transitions. [2023-08-30 03:29:45,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125628140703518 [2023-08-30 03:29:45,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 918 transitions. [2023-08-30 03:29:45,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 918 transitions. [2023-08-30 03:29:45,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:45,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 918 transitions. [2023-08-30 03:29:45,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2023-08-30 03:29:45,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:45,906 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 539 flow. Second operand 3 states and 918 transitions. [2023-08-30 03:29:45,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 962 flow [2023-08-30 03:29:45,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 916 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:45,911 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 449 flow [2023-08-30 03:29:45,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2023-08-30 03:29:45,912 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2023-08-30 03:29:45,912 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 449 flow [2023-08-30 03:29:45,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2023-08-30 03:29:45,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:45,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:45,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:29:45,913 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbThread1of1ForFork1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:45,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -547734848, now seen corresponding path program 1 times [2023-08-30 03:29:45,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:45,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810631812] [2023-08-30 03:29:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:45,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:45,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810631812] [2023-08-30 03:29:45,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810631812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:45,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:45,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576019960] [2023-08-30 03:29:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:45,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 597 [2023-08-30 03:29:45,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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) [2023-08-30 03:29:45,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:45,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 597 [2023-08-30 03:29:45,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:46,102 INFO L130 PetriNetUnfolder]: 895/1594 cut-off events. [2023-08-30 03:29:46,102 INFO L131 PetriNetUnfolder]: For 2238/2262 co-relation queries the response was YES. [2023-08-30 03:29:46,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 1594 events. 895/1594 cut-off events. For 2238/2262 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7923 event pairs, 269 based on Foata normal form. 139/1501 useless extension candidates. Maximal degree in co-relation 5030. Up to 994 conditions per place. [2023-08-30 03:29:46,109 INFO L137 encePairwiseOnDemand]: 591/597 looper letters, 52 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2023-08-30 03:29:46,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 555 flow [2023-08-30 03:29:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-08-30 03:29:46,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49246231155778897 [2023-08-30 03:29:46,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-08-30 03:29:46,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-08-30 03:29:46,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:46,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-08-30 03:29:46,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 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) [2023-08-30 03:29:46,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,115 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 449 flow. Second operand 3 states and 882 transitions. [2023-08-30 03:29:46,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 555 flow [2023-08-30 03:29:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 537 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:29:46,119 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 393 flow [2023-08-30 03:29:46,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-08-30 03:29:46,119 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-08-30 03:29:46,119 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 393 flow [2023-08-30 03:29:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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) [2023-08-30 03:29:46,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:46,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:29:46,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:46,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash -139577290, now seen corresponding path program 1 times [2023-08-30 03:29:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:46,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801144855] [2023-08-30 03:29:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:46,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801144855] [2023-08-30 03:29:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801144855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:46,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:46,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392477634] [2023-08-30 03:29:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:46,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 597 [2023-08-30 03:29:46,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2023-08-30 03:29:46,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:46,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 597 [2023-08-30 03:29:46,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:46,247 INFO L130 PetriNetUnfolder]: 455/822 cut-off events. [2023-08-30 03:29:46,247 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-08-30 03:29:46,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 822 events. 455/822 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3343 event pairs, 137 based on Foata normal form. 42/746 useless extension candidates. Maximal degree in co-relation 2393. Up to 584 conditions per place. [2023-08-30 03:29:46,249 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 47 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2023-08-30 03:29:46,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 469 flow [2023-08-30 03:29:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-30 03:29:46,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097710776102736 [2023-08-30 03:29:46,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-30 03:29:46,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-30 03:29:46,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:46,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-30 03:29:46,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 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) [2023-08-30 03:29:46,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,255 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 393 flow. Second operand 3 states and 913 transitions. [2023-08-30 03:29:46,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 469 flow [2023-08-30 03:29:46,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 402 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 03:29:46,258 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 284 flow [2023-08-30 03:29:46,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 03:29:46,259 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 03:29:46,259 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 284 flow [2023-08-30 03:29:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2023-08-30 03:29:46,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:46,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:29:46,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:46,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash 693666404, now seen corresponding path program 1 times [2023-08-30 03:29:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322750518] [2023-08-30 03:29:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322750518] [2023-08-30 03:29:46,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322750518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:46,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:46,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357963019] [2023-08-30 03:29:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:46,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 597 [2023-08-30 03:29:46,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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) [2023-08-30 03:29:46,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:46,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 597 [2023-08-30 03:29:46,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:46,444 INFO L130 PetriNetUnfolder]: 508/1014 cut-off events. [2023-08-30 03:29:46,444 INFO L131 PetriNetUnfolder]: For 784/784 co-relation queries the response was YES. [2023-08-30 03:29:46,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1014 events. 508/1014 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4980 event pairs, 153 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 2649. Up to 564 conditions per place. [2023-08-30 03:29:46,448 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 61 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2023-08-30 03:29:46,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 618 flow [2023-08-30 03:29:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-30 03:29:46,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080960357342267 [2023-08-30 03:29:46,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-30 03:29:46,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-30 03:29:46,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:46,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-30 03:29:46,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 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) [2023-08-30 03:29:46,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,455 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 284 flow. Second operand 3 states and 910 transitions. [2023-08-30 03:29:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 618 flow [2023-08-30 03:29:46,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 607 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:46,458 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 427 flow [2023-08-30 03:29:46,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 03:29:46,459 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 03:29:46,459 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 427 flow [2023-08-30 03:29:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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) [2023-08-30 03:29:46,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:46,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:46,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:29:46,460 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:46,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 693666405, now seen corresponding path program 1 times [2023-08-30 03:29:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285821740] [2023-08-30 03:29:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285821740] [2023-08-30 03:29:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285821740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:46,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015946016] [2023-08-30 03:29:46,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:46,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:46,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 597 [2023-08-30 03:29:46,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 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) [2023-08-30 03:29:46,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:46,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 597 [2023-08-30 03:29:46,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:46,659 INFO L130 PetriNetUnfolder]: 508/1002 cut-off events. [2023-08-30 03:29:46,659 INFO L131 PetriNetUnfolder]: For 1177/1177 co-relation queries the response was YES. [2023-08-30 03:29:46,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 1002 events. 508/1002 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4905 event pairs, 153 based on Foata normal form. 4/874 useless extension candidates. Maximal degree in co-relation 2763. Up to 411 conditions per place. [2023-08-30 03:29:46,663 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 68 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-08-30 03:29:46,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 694 flow [2023-08-30 03:29:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 919 transitions. [2023-08-30 03:29:46,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131211613623674 [2023-08-30 03:29:46,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 919 transitions. [2023-08-30 03:29:46,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 919 transitions. [2023-08-30 03:29:46,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:46,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 919 transitions. [2023-08-30 03:29:46,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 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) [2023-08-30 03:29:46,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,669 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 427 flow. Second operand 3 states and 919 transitions. [2023-08-30 03:29:46,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 694 flow [2023-08-30 03:29:46,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:46,672 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 411 flow [2023-08-30 03:29:46,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2023-08-30 03:29:46,673 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-08-30 03:29:46,673 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 411 flow [2023-08-30 03:29:46,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 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) [2023-08-30 03:29:46,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:46,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 03:29:46,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:46,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash 28836764, now seen corresponding path program 1 times [2023-08-30 03:29:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:46,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845363924] [2023-08-30 03:29:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845363924] [2023-08-30 03:29:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845363924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405919699] [2023-08-30 03:29:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:46,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 597 [2023-08-30 03:29:46,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-30 03:29:46,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:46,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 597 [2023-08-30 03:29:46,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:46,811 INFO L130 PetriNetUnfolder]: 505/947 cut-off events. [2023-08-30 03:29:46,811 INFO L131 PetriNetUnfolder]: For 1112/1113 co-relation queries the response was YES. [2023-08-30 03:29:46,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 947 events. 505/947 cut-off events. For 1112/1113 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4293 event pairs, 239 based on Foata normal form. 3/819 useless extension candidates. Maximal degree in co-relation 2652. Up to 789 conditions per place. [2023-08-30 03:29:46,814 INFO L137 encePairwiseOnDemand]: 595/597 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-30 03:29:46,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 503 flow [2023-08-30 03:29:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2023-08-30 03:29:46,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49302065884980456 [2023-08-30 03:29:46,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2023-08-30 03:29:46,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2023-08-30 03:29:46,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:46,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2023-08-30 03:29:46,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 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) [2023-08-30 03:29:46,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:46,821 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 411 flow. Second operand 3 states and 883 transitions. [2023-08-30 03:29:46,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 503 flow [2023-08-30 03:29:46,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:46,824 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 403 flow [2023-08-30 03:29:46,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-30 03:29:46,824 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 03:29:46,824 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 403 flow [2023-08-30 03:29:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 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) [2023-08-30 03:29:46,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:46,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:46,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 03:29:46,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:46,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 893941605, now seen corresponding path program 1 times [2023-08-30 03:29:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216859010] [2023-08-30 03:29:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:46,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216859010] [2023-08-30 03:29:46,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216859010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:46,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:46,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:46,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101796516] [2023-08-30 03:29:46,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:29:46,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:29:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:29:46,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 597 [2023-08-30 03:29:46,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 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) [2023-08-30 03:29:46,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:46,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 597 [2023-08-30 03:29:46,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:47,085 INFO L130 PetriNetUnfolder]: 504/963 cut-off events. [2023-08-30 03:29:47,085 INFO L131 PetriNetUnfolder]: For 841/841 co-relation queries the response was YES. [2023-08-30 03:29:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 963 events. 504/963 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4359 event pairs, 145 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 2573. Up to 578 conditions per place. [2023-08-30 03:29:47,088 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 64 selfloop transitions, 4 changer transitions 14/92 dead transitions. [2023-08-30 03:29:47,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 691 flow [2023-08-30 03:29:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:29:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:29:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1191 transitions. [2023-08-30 03:29:47,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49874371859296485 [2023-08-30 03:29:47,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1191 transitions. [2023-08-30 03:29:47,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1191 transitions. [2023-08-30 03:29:47,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:47,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1191 transitions. [2023-08-30 03:29:47,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 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) [2023-08-30 03:29:47,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:47,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:47,096 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 403 flow. Second operand 4 states and 1191 transitions. [2023-08-30 03:29:47,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 691 flow [2023-08-30 03:29:47,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:29:47,099 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 395 flow [2023-08-30 03:29:47,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-30 03:29:47,100 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-08-30 03:29:47,100 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 395 flow [2023-08-30 03:29:47,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 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) [2023-08-30 03:29:47,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:47,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:47,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 03:29:47,101 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:47,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1754871931, now seen corresponding path program 1 times [2023-08-30 03:29:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894315014] [2023-08-30 03:29:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:47,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894315014] [2023-08-30 03:29:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894315014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286868290] [2023-08-30 03:29:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:47,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:47,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:47,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:47,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 597 [2023-08-30 03:29:47,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-08-30 03:29:47,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:47,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 597 [2023-08-30 03:29:47,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:47,264 INFO L130 PetriNetUnfolder]: 497/956 cut-off events. [2023-08-30 03:29:47,265 INFO L131 PetriNetUnfolder]: For 1128/1130 co-relation queries the response was YES. [2023-08-30 03:29:47,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 956 events. 497/956 cut-off events. For 1128/1130 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4506 event pairs, 166 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 2712. Up to 552 conditions per place. [2023-08-30 03:29:47,268 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 37 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2023-08-30 03:29:47,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 519 flow [2023-08-30 03:29:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-30 03:29:47,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980457844779453 [2023-08-30 03:29:47,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-30 03:29:47,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-30 03:29:47,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:47,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-30 03:29:47,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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) [2023-08-30 03:29:47,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:47,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:47,276 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 395 flow. Second operand 3 states and 892 transitions. [2023-08-30 03:29:47,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 519 flow [2023-08-30 03:29:47,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 496 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 03:29:47,280 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 400 flow [2023-08-30 03:29:47,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-30 03:29:47,280 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-30 03:29:47,280 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 400 flow [2023-08-30 03:29:47,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-08-30 03:29:47,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:47,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:47,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 03:29:47,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:47,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1754871932, now seen corresponding path program 1 times [2023-08-30 03:29:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249812066] [2023-08-30 03:29:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249812066] [2023-08-30 03:29:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249812066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:29:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143382478] [2023-08-30 03:29:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:47,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:29:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:29:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:29:47,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 597 [2023-08-30 03:29:47,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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) [2023-08-30 03:29:47,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:47,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 597 [2023-08-30 03:29:47,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:47,456 INFO L130 PetriNetUnfolder]: 497/942 cut-off events. [2023-08-30 03:29:47,456 INFO L131 PetriNetUnfolder]: For 1226/1228 co-relation queries the response was YES. [2023-08-30 03:29:47,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 942 events. 497/942 cut-off events. For 1226/1228 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4395 event pairs, 166 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 2704. Up to 552 conditions per place. [2023-08-30 03:29:47,459 INFO L137 encePairwiseOnDemand]: 594/597 looper letters, 37 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2023-08-30 03:29:47,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 524 flow [2023-08-30 03:29:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:29:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:29:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 904 transitions. [2023-08-30 03:29:47,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047459519821329 [2023-08-30 03:29:47,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 904 transitions. [2023-08-30 03:29:47,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 904 transitions. [2023-08-30 03:29:47,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:47,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 904 transitions. [2023-08-30 03:29:47,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 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) [2023-08-30 03:29:47,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:47,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 597.0) internal successors, (2388), 4 states have internal predecessors, (2388), 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) [2023-08-30 03:29:47,465 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 400 flow. Second operand 3 states and 904 transitions. [2023-08-30 03:29:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 524 flow [2023-08-30 03:29:47,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:47,469 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 398 flow [2023-08-30 03:29:47,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-30 03:29:47,469 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 03:29:47,469 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 398 flow [2023-08-30 03:29:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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) [2023-08-30 03:29:47,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:47,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 03:29:47,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:47,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1490053595, now seen corresponding path program 1 times [2023-08-30 03:29:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:47,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254559007] [2023-08-30 03:29:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254559007] [2023-08-30 03:29:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254559007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:47,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:47,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:29:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557178466] [2023-08-30 03:29:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:29:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:29:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:29:47,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 597 [2023-08-30 03:29:47,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 280.8) internal successors, (1404), 5 states have internal predecessors, (1404), 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) [2023-08-30 03:29:47,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:47,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 597 [2023-08-30 03:29:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:47,745 INFO L130 PetriNetUnfolder]: 603/1030 cut-off events. [2023-08-30 03:29:47,745 INFO L131 PetriNetUnfolder]: For 1276/1276 co-relation queries the response was YES. [2023-08-30 03:29:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 1030 events. 603/1030 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4446 event pairs, 171 based on Foata normal form. 40/930 useless extension candidates. Maximal degree in co-relation 2973. Up to 542 conditions per place. [2023-08-30 03:29:47,749 INFO L137 encePairwiseOnDemand]: 591/597 looper letters, 34 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2023-08-30 03:29:47,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 514 flow [2023-08-30 03:29:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:29:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:29:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1147 transitions. [2023-08-30 03:29:47,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803182579564489 [2023-08-30 03:29:47,752 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1147 transitions. [2023-08-30 03:29:47,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1147 transitions. [2023-08-30 03:29:47,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:47,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1147 transitions. [2023-08-30 03:29:47,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 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) [2023-08-30 03:29:47,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:47,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:47,756 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 398 flow. Second operand 4 states and 1147 transitions. [2023-08-30 03:29:47,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 514 flow [2023-08-30 03:29:47,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 476 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 03:29:47,760 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 386 flow [2023-08-30 03:29:47,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-08-30 03:29:47,760 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-30 03:29:47,760 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 386 flow [2023-08-30 03:29:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.8) internal successors, (1404), 5 states have internal predecessors, (1404), 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) [2023-08-30 03:29:47,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:47,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 03:29:47,761 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:47,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1921917064, now seen corresponding path program 1 times [2023-08-30 03:29:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546693607] [2023-08-30 03:29:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:47,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546693607] [2023-08-30 03:29:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546693607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:47,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:47,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856203291] [2023-08-30 03:29:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:47,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:29:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:29:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:29:47,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 597 [2023-08-30 03:29:47,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2023-08-30 03:29:47,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:47,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 597 [2023-08-30 03:29:47,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:48,097 INFO L130 PetriNetUnfolder]: 731/1189 cut-off events. [2023-08-30 03:29:48,098 INFO L131 PetriNetUnfolder]: For 1635/1635 co-relation queries the response was YES. [2023-08-30 03:29:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 1189 events. 731/1189 cut-off events. For 1635/1635 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4839 event pairs, 264 based on Foata normal form. 69/1097 useless extension candidates. Maximal degree in co-relation 3496. Up to 780 conditions per place. [2023-08-30 03:29:48,102 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 36 selfloop transitions, 18 changer transitions 1/60 dead transitions. [2023-08-30 03:29:48,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 524 flow [2023-08-30 03:29:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:29:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:29:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1164 transitions. [2023-08-30 03:29:48,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48743718592964824 [2023-08-30 03:29:48,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1164 transitions. [2023-08-30 03:29:48,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1164 transitions. [2023-08-30 03:29:48,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:48,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1164 transitions. [2023-08-30 03:29:48,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-08-30 03:29:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:48,109 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 386 flow. Second operand 4 states and 1164 transitions. [2023-08-30 03:29:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 524 flow [2023-08-30 03:29:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 483 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:29:48,112 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 371 flow [2023-08-30 03:29:48,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-30 03:29:48,113 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 03:29:48,113 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 371 flow [2023-08-30 03:29:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2023-08-30 03:29:48,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:48,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 03:29:48,114 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:48,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 164418903, now seen corresponding path program 1 times [2023-08-30 03:29:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206288596] [2023-08-30 03:29:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206288596] [2023-08-30 03:29:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206288596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:48,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:48,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:29:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135821730] [2023-08-30 03:29:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:29:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:29:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:29:48,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 597 [2023-08-30 03:29:48,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 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) [2023-08-30 03:29:48,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:48,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 597 [2023-08-30 03:29:48,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:48,461 INFO L130 PetriNetUnfolder]: 592/1082 cut-off events. [2023-08-30 03:29:48,461 INFO L131 PetriNetUnfolder]: For 1572/1572 co-relation queries the response was YES. [2023-08-30 03:29:48,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 1082 events. 592/1082 cut-off events. For 1572/1572 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5066 event pairs, 164 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 3129. Up to 528 conditions per place. [2023-08-30 03:29:48,465 INFO L137 encePairwiseOnDemand]: 591/597 looper letters, 60 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-30 03:29:48,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 801 flow [2023-08-30 03:29:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:29:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:29:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2023-08-30 03:29:48,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962311557788945 [2023-08-30 03:29:48,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2023-08-30 03:29:48,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2023-08-30 03:29:48,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:48,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2023-08-30 03:29:48,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 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) [2023-08-30 03:29:48,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:48,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 597.0) internal successors, (2985), 5 states have internal predecessors, (2985), 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) [2023-08-30 03:29:48,472 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 371 flow. Second operand 4 states and 1185 transitions. [2023-08-30 03:29:48,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 801 flow [2023-08-30 03:29:48,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 743 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:29:48,475 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 597 flow [2023-08-30 03:29:48,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=597, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-30 03:29:48,476 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 03:29:48,476 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 597 flow [2023-08-30 03:29:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 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) [2023-08-30 03:29:48,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:48,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 03:29:48,477 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:48,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -382263345, now seen corresponding path program 2 times [2023-08-30 03:29:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:48,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394985485] [2023-08-30 03:29:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:48,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394985485] [2023-08-30 03:29:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394985485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:29:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:29:48,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:29:48,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649467808] [2023-08-30 03:29:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:29:48,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:29:48,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:48,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:29:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:29:48,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 597 [2023-08-30 03:29:48,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 597 flow. Second operand has 5 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 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) [2023-08-30 03:29:48,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:48,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 597 [2023-08-30 03:29:48,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:48,823 INFO L130 PetriNetUnfolder]: 592/1080 cut-off events. [2023-08-30 03:29:48,824 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-08-30 03:29:48,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1080 events. 592/1080 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5037 event pairs, 114 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 3286. Up to 393 conditions per place. [2023-08-30 03:29:48,827 INFO L137 encePairwiseOnDemand]: 592/597 looper letters, 54 selfloop transitions, 34 changer transitions 0/94 dead transitions. [2023-08-30 03:29:48,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 910 flow [2023-08-30 03:29:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:29:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:29:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1461 transitions. [2023-08-30 03:29:48,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894472361809045 [2023-08-30 03:29:48,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1461 transitions. [2023-08-30 03:29:48,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1461 transitions. [2023-08-30 03:29:48,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:48,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1461 transitions. [2023-08-30 03:29:48,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-08-30 03:29:48,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 597.0) internal successors, (3582), 6 states have internal predecessors, (3582), 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) [2023-08-30 03:29:48,836 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 597.0) internal successors, (3582), 6 states have internal predecessors, (3582), 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) [2023-08-30 03:29:48,836 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 597 flow. Second operand 5 states and 1461 transitions. [2023-08-30 03:29:48,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 910 flow [2023-08-30 03:29:48,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 872 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-08-30 03:29:48,841 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 673 flow [2023-08-30 03:29:48,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=673, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-08-30 03:29:48,841 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-08-30 03:29:48,841 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 673 flow [2023-08-30 03:29:48,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 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) [2023-08-30 03:29:48,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:48,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 03:29:48,842 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:48,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash 722578960, now seen corresponding path program 1 times [2023-08-30 03:29:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004084169] [2023-08-30 03:29:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004084169] [2023-08-30 03:29:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004084169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 03:29:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669041419] [2023-08-30 03:29:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 03:29:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:29:49,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 03:29:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 03:29:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:49,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 03:29:49,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:29:49,292 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 03:29:49,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 32 [2023-08-30 03:29:49,317 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 03:29:49,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2023-08-30 03:29:49,425 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-08-30 03:29:49,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 44 [2023-08-30 03:29:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:49,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:29:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:29:49,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669041419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:29:49,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 03:29:49,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-08-30 03:29:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056958714] [2023-08-30 03:29:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 03:29:49,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 03:29:49,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:49,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 03:29:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 03:29:50,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 597 [2023-08-30 03:29:50,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 673 flow. Second operand has 14 states, 14 states have (on average 279.85714285714283) internal successors, (3918), 14 states have internal predecessors, (3918), 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) [2023-08-30 03:29:50,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:50,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 597 [2023-08-30 03:29:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:50,898 INFO L130 PetriNetUnfolder]: 678/1221 cut-off events. [2023-08-30 03:29:50,899 INFO L131 PetriNetUnfolder]: For 2734/2736 co-relation queries the response was YES. [2023-08-30 03:29:50,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3851 conditions, 1221 events. 678/1221 cut-off events. For 2734/2736 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5279 event pairs, 188 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 3834. Up to 717 conditions per place. [2023-08-30 03:29:50,903 INFO L137 encePairwiseOnDemand]: 590/597 looper letters, 65 selfloop transitions, 2 changer transitions 48/120 dead transitions. [2023-08-30 03:29:50,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 1175 flow [2023-08-30 03:29:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:29:50,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:29:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2286 transitions. [2023-08-30 03:29:50,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478643216080402 [2023-08-30 03:29:50,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2286 transitions. [2023-08-30 03:29:50,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2286 transitions. [2023-08-30 03:29:50,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:50,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2286 transitions. [2023-08-30 03:29:50,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 285.75) internal successors, (2286), 8 states have internal predecessors, (2286), 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) [2023-08-30 03:29:50,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 597.0) internal successors, (5373), 9 states have internal predecessors, (5373), 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) [2023-08-30 03:29:50,917 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 597.0) internal successors, (5373), 9 states have internal predecessors, (5373), 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) [2023-08-30 03:29:50,917 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 673 flow. Second operand 8 states and 2286 transitions. [2023-08-30 03:29:50,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 1175 flow [2023-08-30 03:29:50,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 1137 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-08-30 03:29:50,923 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 593 flow [2023-08-30 03:29:50,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-30 03:29:50,923 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-08-30 03:29:50,924 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 593 flow [2023-08-30 03:29:50,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 279.85714285714283) internal successors, (3918), 14 states have internal predecessors, (3918), 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) [2023-08-30 03:29:50,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:29:50,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:50,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 03:29:51,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 03:29:51,133 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 03:29:51,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:29:51,133 INFO L85 PathProgramCache]: Analyzing trace with hash 263321070, now seen corresponding path program 2 times [2023-08-30 03:29:51,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:29:51,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183263905] [2023-08-30 03:29:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:29:51,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:29:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:29:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:29:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183263905] [2023-08-30 03:29:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183263905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 03:29:51,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429926177] [2023-08-30 03:29:51,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:29:51,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 03:29:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:29:51,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 03:29:51,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 03:29:51,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 03:29:51,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:29:51,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:29:51,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:29:51,520 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 03:29:51,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 32 [2023-08-30 03:29:51,542 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 03:29:51,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 34 [2023-08-30 03:29:51,609 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-08-30 03:29:51,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 47 [2023-08-30 03:29:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:51,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:29:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 03:29:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429926177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:29:51,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 03:29:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 03:29:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096358012] [2023-08-30 03:29:51,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 03:29:51,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:29:51,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:29:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:29:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:29:52,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 597 [2023-08-30 03:29:52,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 593 flow. Second operand has 12 states, 12 states have (on average 281.8333333333333) internal successors, (3382), 12 states have internal predecessors, (3382), 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) [2023-08-30 03:29:52,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:29:52,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 597 [2023-08-30 03:29:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:29:52,794 INFO L130 PetriNetUnfolder]: 524/933 cut-off events. [2023-08-30 03:29:52,794 INFO L131 PetriNetUnfolder]: For 1822/1822 co-relation queries the response was YES. [2023-08-30 03:29:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 933 events. 524/933 cut-off events. For 1822/1822 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3678 event pairs, 114 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 2865. Up to 256 conditions per place. [2023-08-30 03:29:52,796 INFO L137 encePairwiseOnDemand]: 591/597 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2023-08-30 03:29:52,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 962 flow [2023-08-30 03:29:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:29:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:29:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2018 transitions. [2023-08-30 03:29:52,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828906436946638 [2023-08-30 03:29:52,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2018 transitions. [2023-08-30 03:29:52,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2018 transitions. [2023-08-30 03:29:52,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:29:52,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2018 transitions. [2023-08-30 03:29:52,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.2857142857143) internal successors, (2018), 7 states have internal predecessors, (2018), 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) [2023-08-30 03:29:52,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 597.0) internal successors, (4776), 8 states have internal predecessors, (4776), 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) [2023-08-30 03:29:52,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 597.0) internal successors, (4776), 8 states have internal predecessors, (4776), 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) [2023-08-30 03:29:52,807 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 593 flow. Second operand 7 states and 2018 transitions. [2023-08-30 03:29:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 962 flow [2023-08-30 03:29:52,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 926 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-30 03:29:52,811 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-30 03:29:52,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=597, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-30 03:29:52,812 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-30 03:29:52,812 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-30 03:29:52,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.8333333333333) internal successors, (3382), 12 states have internal predecessors, (3382), 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) [2023-08-30 03:29:52,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2023-08-30 03:29:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-08-30 03:29:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2023-08-30 03:29:52,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2023-08-30 03:29:52,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2023-08-30 03:29:52,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 03:29:53,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 03:29:53,026 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:29:53,029 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:29:53,029 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:29:53,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:29:53 BasicIcfg [2023-08-30 03:29:53,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:29:53,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:29:53,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:29:53,032 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:29:53,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:29:35" (3/4) ... [2023-08-30 03:29:53,033 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:29:53,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-08-30 03:29:53,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-08-30 03:29:53,039 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 03:29:53,040 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 03:29:53,040 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:29:53,040 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 03:29:53,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:29:53,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:29:53,063 INFO L158 Benchmark]: Toolchain (without parser) took 18599.10ms. Allocated memory was 75.5MB in the beginning and 583.0MB in the end (delta: 507.5MB). Free memory was 50.5MB in the beginning and 522.2MB in the end (delta: -471.7MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,063 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:29:53,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.50ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 32.6MB in the end (delta: 17.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.44ms. Allocated memory is still 75.5MB. Free memory was 32.6MB in the beginning and 29.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,063 INFO L158 Benchmark]: Boogie Preprocessor took 34.59ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 46.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,063 INFO L158 Benchmark]: RCFGBuilder took 521.33ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 46.1MB in the beginning and 58.2MB in the end (delta: -12.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,064 INFO L158 Benchmark]: TraceAbstraction took 17190.67ms. Allocated memory was 94.4MB in the beginning and 583.0MB in the end (delta: 488.6MB). Free memory was 57.6MB in the beginning and 526.4MB in the end (delta: -468.7MB). Peak memory consumption was 343.4MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,064 INFO L158 Benchmark]: Witness Printer took 30.73ms. Allocated memory is still 583.0MB. Free memory was 525.3MB in the beginning and 522.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:29:53,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.50ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 32.6MB in the end (delta: 17.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.44ms. Allocated memory is still 75.5MB. Free memory was 32.6MB in the beginning and 29.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.59ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 46.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.33ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 46.1MB in the beginning and 58.2MB in the end (delta: -12.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 17190.67ms. Allocated memory was 94.4MB in the beginning and 583.0MB in the end (delta: 488.6MB). Free memory was 57.6MB in the beginning and 526.4MB in the end (delta: -468.7MB). Peak memory consumption was 343.4MB. Max. memory is 16.1GB. * Witness Printer took 30.73ms. Allocated memory is still 583.0MB. Free memory was 525.3MB in the beginning and 522.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 210 PlacesBefore, 51 PlacesAfterwards, 227 TransitionsBefore, 54 TransitionsAfterwards, 10740 CoEnabledTransitionPairs, 8 FixpointIterations, 76 TrivialSequentialCompositions, 140 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 40 ConcurrentYvCompositions, 14 ChoiceCompositions, 273 TotalNumberOfCompositions, 17413 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12375, independent: 12094, independent conditional: 0, independent unconditional: 12094, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6138, independent: 6071, independent conditional: 0, independent unconditional: 6071, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12375, independent: 6023, independent conditional: 0, independent unconditional: 6023, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 6138, unknown conditional: 0, unknown unconditional: 6138] , Statistics on independence cache: Total cache size (in pairs): 265, Positive cache size: 245, Positive conditional cache size: 0, Positive unconditional cache size: 245, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1795]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 319 locations, 31 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: 17.1s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2941 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1839 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6216 IncrementalHoareTripleChecker+Invalid, 6418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 167 mSDtfsCounter, 6216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=673occurred in iteration=23, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 338 ConstructedInterpolants, 39 QuantifiedInterpolants, 2628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 616 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 20/33 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 03:29:53,092 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