./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8 --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 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:36:14,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:36:14,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:36:14,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:36:14,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:36:14,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:36:14,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:36:14,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:36:14,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:36:14,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:36:14,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:36:14,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:36:14,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:36:14,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:36:14,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:36:14,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:36:14,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:36:14,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:36:14,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:36:14,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:36:14,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:36:14,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:36:14,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:36:14,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:36:14,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:36:14,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:36:14,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:36:14,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:36:14,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:36:14,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:36:14,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:36:14,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:36:14,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:36:14,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:36:14,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:36:14,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:36:14,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:36:14,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:36:14,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:36:14,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:36:14,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:36:14,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 22:36:14,633 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:36:14,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:36:14,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:36:14,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:36:14,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:36:14,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:36:14,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:36:14,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:36:14,635 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:36:14,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:36:14,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:36:14,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:36:14,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:36:14,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:36:14,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:36:14,638 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:36:14,638 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2022-12-13 22:36:14,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:36:14,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:36:14,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:36:14,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:36:14,847 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:36:14,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-12-13 22:36:17,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:36:17,739 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:36:17,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-12-13 22:36:17,755 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/data/ac2df02cf/f0da4c12484f43689cba7918563eac89/FLAG0aef5bf6b [2022-12-13 22:36:17,769 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/data/ac2df02cf/f0da4c12484f43689cba7918563eac89 [2022-12-13 22:36:17,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:36:17,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:36:17,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:36:17,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:36:17,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:36:17,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:36:17" (1/1) ... [2022-12-13 22:36:17,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577f8e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:17, skipping insertion in model container [2022-12-13 22:36:17,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:36:17" (1/1) ... [2022-12-13 22:36:17,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:36:17,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:36:18,272 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-12-13 22:36:18,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:36:18,310 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:36:18,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-12-13 22:36:18,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:36:18,463 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:36:18,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18 WrapperNode [2022-12-13 22:36:18,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:36:18,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:36:18,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:36:18,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:36:18,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,507 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 201 [2022-12-13 22:36:18,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:36:18,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:36:18,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:36:18,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:36:18,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:36:18,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:36:18,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:36:18,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:36:18,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (1/1) ... [2022-12-13 22:36:18,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:36:18,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:36:18,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:36:18,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-12-13 22:36:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-12-13 22:36:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 22:36:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:36:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 22:36:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:36:18,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:36:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:36:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:36:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:36:18,597 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:36:18,824 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:36:18,826 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:36:19,057 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:36:19,066 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:36:19,066 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 22:36:19,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:36:19 BoogieIcfgContainer [2022-12-13 22:36:19,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:36:19,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:36:19,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:36:19,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:36:19,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:36:17" (1/3) ... [2022-12-13 22:36:19,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2642d2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:36:19, skipping insertion in model container [2022-12-13 22:36:19,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:36:18" (2/3) ... [2022-12-13 22:36:19,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2642d2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:36:19, skipping insertion in model container [2022-12-13 22:36:19,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:36:19" (3/3) ... [2022-12-13 22:36:19,077 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2022-12-13 22:36:19,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:36:19,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-12-13 22:36:19,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:36:19,166 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 22:36:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 353 transitions, 736 flow [2022-12-13 22:36:19,274 INFO L130 PetriNetUnfolder]: 33/371 cut-off events. [2022-12-13 22:36:19,274 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:36:19,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 33/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1009 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 243. Up to 11 conditions per place. [2022-12-13 22:36:19,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 353 transitions, 736 flow [2022-12-13 22:36:19,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 248 transitions, 513 flow [2022-12-13 22:36:19,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:36:19,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 248 transitions, 513 flow [2022-12-13 22:36:19,296 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 248 transitions, 513 flow [2022-12-13 22:36:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 248 transitions, 513 flow [2022-12-13 22:36:19,337 INFO L130 PetriNetUnfolder]: 33/371 cut-off events. [2022-12-13 22:36:19,337 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:36:19,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 33/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1008 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 243. Up to 11 conditions per place. [2022-12-13 22:36:19,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 12794 [2022-12-13 22:36:25,486 INFO L134 LiptonReduction]: Checked pairs total: 19350 [2022-12-13 22:36:25,486 INFO L136 LiptonReduction]: Total number of compositions: 307 [2022-12-13 22:36:25,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:36:25,504 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;@7ab83309, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:36:25,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 22:36:25,505 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 22:36:25,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:36:25,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:25,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 22:36:25,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1084, now seen corresponding path program 1 times [2022-12-13 22:36:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:25,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617240262] [2022-12-13 22:36:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:25,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617240262] [2022-12-13 22:36:25,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617240262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:25,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:25,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 22:36:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133665525] [2022-12-13 22:36:25,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 22:36:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 22:36:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:36:25,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 660 [2022-12-13 22:36:25,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:25,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:25,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 660 [2022-12-13 22:36:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:25,906 INFO L130 PetriNetUnfolder]: 810/1305 cut-off events. [2022-12-13 22:36:25,906 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 22:36:25,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1305 events. 810/1305 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6324 event pairs, 479 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 2341. Up to 1179 conditions per place. [2022-12-13 22:36:25,914 INFO L137 encePairwiseOnDemand]: 654/660 looper letters, 35 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2022-12-13 22:36:25,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 185 flow [2022-12-13 22:36:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 22:36:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 22:36:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 687 transitions. [2022-12-13 22:36:25,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5204545454545455 [2022-12-13 22:36:25,929 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 687 transitions. [2022-12-13 22:36:25,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 687 transitions. [2022-12-13 22:36:25,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 687 transitions. [2022-12-13 22:36:25,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 343.5) internal successors, (687), 2 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:25,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 660.0) internal successors, (1980), 3 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:25,945 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 660.0) internal successors, (1980), 3 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:25,946 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 127 flow. Second operand 2 states and 687 transitions. [2022-12-13 22:36:25,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 185 flow [2022-12-13 22:36:25,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:25,951 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 111 flow [2022-12-13 22:36:25,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, 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} [2022-12-13 22:36:25,955 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2022-12-13 22:36:25,955 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 111 flow [2022-12-13 22:36:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:25,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:25,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:36:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:36:25,956 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)] === [2022-12-13 22:36:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1069166, now seen corresponding path program 1 times [2022-12-13 22:36:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:25,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152523606] [2022-12-13 22:36:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:26,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:26,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152523606] [2022-12-13 22:36:26,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152523606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:26,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:26,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:36:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048919544] [2022-12-13 22:36:26,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:26,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:26,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 660 [2022-12-13 22:36:26,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:26,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 660 [2022-12-13 22:36:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:26,438 INFO L130 PetriNetUnfolder]: 1948/3125 cut-off events. [2022-12-13 22:36:26,438 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 22:36:26,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5974 conditions, 3125 events. 1948/3125 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16382 event pairs, 693 based on Foata normal form. 0/1473 useless extension candidates. Maximal degree in co-relation 5970. Up to 1594 conditions per place. [2022-12-13 22:36:26,449 INFO L137 encePairwiseOnDemand]: 652/660 looper letters, 59 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2022-12-13 22:36:26,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 310 flow [2022-12-13 22:36:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2022-12-13 22:36:26,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5080808080808081 [2022-12-13 22:36:26,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2022-12-13 22:36:26,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2022-12-13 22:36:26,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:26,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2022-12-13 22:36:26,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,461 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 111 flow. Second operand 3 states and 1006 transitions. [2022-12-13 22:36:26,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 310 flow [2022-12-13 22:36:26,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:36:26,464 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 161 flow [2022-12-13 22:36:26,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, 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} [2022-12-13 22:36:26,465 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-13 22:36:26,465 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 161 flow [2022-12-13 22:36:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:26,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:36:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:36:26,466 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)] === [2022-12-13 22:36:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1070682, now seen corresponding path program 1 times [2022-12-13 22:36:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:26,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447318218] [2022-12-13 22:36:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:26,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447318218] [2022-12-13 22:36:26,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447318218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:26,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:26,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710691094] [2022-12-13 22:36:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:26,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:26,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 660 [2022-12-13 22:36:26,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:26,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 660 [2022-12-13 22:36:26,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:26,806 INFO L130 PetriNetUnfolder]: 1554/2419 cut-off events. [2022-12-13 22:36:26,806 INFO L131 PetriNetUnfolder]: For 581/646 co-relation queries the response was YES. [2022-12-13 22:36:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 2419 events. 1554/2419 cut-off events. For 581/646 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11481 event pairs, 767 based on Foata normal form. 5/1360 useless extension candidates. Maximal degree in co-relation 5259. Up to 2228 conditions per place. [2022-12-13 22:36:26,816 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 38 selfloop transitions, 0 changer transitions 2/55 dead transitions. [2022-12-13 22:36:26,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 243 flow [2022-12-13 22:36:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-12-13 22:36:26,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5005050505050505 [2022-12-13 22:36:26,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-12-13 22:36:26,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-12-13 22:36:26,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:26,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-12-13 22:36:26,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,826 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 161 flow. Second operand 3 states and 991 transitions. [2022-12-13 22:36:26,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 243 flow [2022-12-13 22:36:26,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:26,830 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 147 flow [2022-12-13 22:36:26,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, 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} [2022-12-13 22:36:26,831 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 22:36:26,831 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 147 flow [2022-12-13 22:36:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:26,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:26,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:36:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:36:26,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 33000711, now seen corresponding path program 1 times [2022-12-13 22:36:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136338070] [2022-12-13 22:36:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:26,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136338070] [2022-12-13 22:36:26,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136338070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:26,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:26,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:36:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203645971] [2022-12-13 22:36:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:27,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 660 [2022-12-13 22:36:27,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:27,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 660 [2022-12-13 22:36:27,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:27,342 INFO L130 PetriNetUnfolder]: 1931/3078 cut-off events. [2022-12-13 22:36:27,342 INFO L131 PetriNetUnfolder]: For 616/800 co-relation queries the response was YES. [2022-12-13 22:36:27,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 3078 events. 1931/3078 cut-off events. For 616/800 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16156 event pairs, 808 based on Foata normal form. 112/1866 useless extension candidates. Maximal degree in co-relation 6664. Up to 1726 conditions per place. [2022-12-13 22:36:27,353 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 68 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2022-12-13 22:36:27,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 383 flow [2022-12-13 22:36:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2022-12-13 22:36:27,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2022-12-13 22:36:27,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2022-12-13 22:36:27,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2022-12-13 22:36:27,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:27,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2022-12-13 22:36:27,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,365 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 147 flow. Second operand 3 states and 1015 transitions. [2022-12-13 22:36:27,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 383 flow [2022-12-13 22:36:27,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 377 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 22:36:27,368 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 175 flow [2022-12-13 22:36:27,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2022-12-13 22:36:27,369 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2022-12-13 22:36:27,369 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 175 flow [2022-12-13 22:36:27,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:27,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:36:27,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:36:27,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash 33000712, now seen corresponding path program 1 times [2022-12-13 22:36:27,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:27,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862195052] [2022-12-13 22:36:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:27,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862195052] [2022-12-13 22:36:27,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862195052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:27,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:27,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:36:27,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256584514] [2022-12-13 22:36:27,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:27,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:27,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:27,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 660 [2022-12-13 22:36:27,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:27,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 660 [2022-12-13 22:36:27,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:27,743 INFO L130 PetriNetUnfolder]: 1697/2688 cut-off events. [2022-12-13 22:36:27,743 INFO L131 PetriNetUnfolder]: For 379/537 co-relation queries the response was YES. [2022-12-13 22:36:27,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 2688 events. 1697/2688 cut-off events. For 379/537 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13506 event pairs, 883 based on Foata normal form. 142/1776 useless extension candidates. Maximal degree in co-relation 5797. Up to 2460 conditions per place. [2022-12-13 22:36:27,752 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-12-13 22:36:27,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 251 flow [2022-12-13 22:36:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2022-12-13 22:36:27,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4994949494949495 [2022-12-13 22:36:27,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2022-12-13 22:36:27,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2022-12-13 22:36:27,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:27,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2022-12-13 22:36:27,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,761 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 175 flow. Second operand 3 states and 989 transitions. [2022-12-13 22:36:27,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 251 flow [2022-12-13 22:36:27,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:36:27,763 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 169 flow [2022-12-13 22:36:27,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2022-12-13 22:36:27,764 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-13 22:36:27,764 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 169 flow [2022-12-13 22:36:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:27,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:36:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:36:27,766 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)] === [2022-12-13 22:36:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1023107636, now seen corresponding path program 1 times [2022-12-13 22:36:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:27,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957994026] [2022-12-13 22:36:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:27,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:27,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957994026] [2022-12-13 22:36:27,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957994026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:27,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:27,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:27,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455623240] [2022-12-13 22:36:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:27,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:36:27,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:36:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:36:27,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 660 [2022-12-13 22:36:27,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:27,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:27,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 660 [2022-12-13 22:36:27,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:28,343 INFO L130 PetriNetUnfolder]: 2269/3559 cut-off events. [2022-12-13 22:36:28,343 INFO L131 PetriNetUnfolder]: For 406/562 co-relation queries the response was YES. [2022-12-13 22:36:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 3559 events. 2269/3559 cut-off events. For 406/562 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 18924 event pairs, 906 based on Foata normal form. 58/2186 useless extension candidates. Maximal degree in co-relation 7586. Up to 1844 conditions per place. [2022-12-13 22:36:28,354 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 91 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2022-12-13 22:36:28,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 110 transitions, 517 flow [2022-12-13 22:36:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1352 transitions. [2022-12-13 22:36:28,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5121212121212121 [2022-12-13 22:36:28,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1352 transitions. [2022-12-13 22:36:28,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1352 transitions. [2022-12-13 22:36:28,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:28,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1352 transitions. [2022-12-13 22:36:28,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,363 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 169 flow. Second operand 4 states and 1352 transitions. [2022-12-13 22:36:28,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 110 transitions, 517 flow [2022-12-13 22:36:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 110 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:36:28,364 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 216 flow [2022-12-13 22:36:28,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, 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} [2022-12-13 22:36:28,365 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 22:36:28,365 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 216 flow [2022-12-13 22:36:28,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:28,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:36:28,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:36:28,366 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)] === [2022-12-13 22:36:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1023107637, now seen corresponding path program 1 times [2022-12-13 22:36:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728065734] [2022-12-13 22:36:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:28,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728065734] [2022-12-13 22:36:28,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728065734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:28,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:28,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513805659] [2022-12-13 22:36:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:36:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:36:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:36:28,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 660 [2022-12-13 22:36:28,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:28,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 660 [2022-12-13 22:36:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:28,824 INFO L130 PetriNetUnfolder]: 1974/3145 cut-off events. [2022-12-13 22:36:28,824 INFO L131 PetriNetUnfolder]: For 554/710 co-relation queries the response was YES. [2022-12-13 22:36:28,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6876 conditions, 3145 events. 1974/3145 cut-off events. For 554/710 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16651 event pairs, 838 based on Foata normal form. 173/2104 useless extension candidates. Maximal degree in co-relation 6866. Up to 1885 conditions per place. [2022-12-13 22:36:28,834 INFO L137 encePairwiseOnDemand]: 656/660 looper letters, 68 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-12-13 22:36:28,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 436 flow [2022-12-13 22:36:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1325 transitions. [2022-12-13 22:36:28,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5018939393939394 [2022-12-13 22:36:28,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1325 transitions. [2022-12-13 22:36:28,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1325 transitions. [2022-12-13 22:36:28,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:28,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1325 transitions. [2022-12-13 22:36:28,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,843 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,843 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 216 flow. Second operand 4 states and 1325 transitions. [2022-12-13 22:36:28,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 436 flow [2022-12-13 22:36:28,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:36:28,845 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 218 flow [2022-12-13 22:36:28,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2022-12-13 22:36:28,846 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2022-12-13 22:36:28,846 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 218 flow [2022-12-13 22:36:28,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:28,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 22:36:28,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:36:28,847 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)] === [2022-12-13 22:36:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1648931002, now seen corresponding path program 1 times [2022-12-13 22:36:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:28,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801940796] [2022-12-13 22:36:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:28,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801940796] [2022-12-13 22:36:28,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801940796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:28,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:28,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:28,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313292256] [2022-12-13 22:36:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:36:28,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:36:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:36:28,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 660 [2022-12-13 22:36:28,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:28,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:28,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 660 [2022-12-13 22:36:28,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:29,278 INFO L130 PetriNetUnfolder]: 2100/3409 cut-off events. [2022-12-13 22:36:29,278 INFO L131 PetriNetUnfolder]: For 543/741 co-relation queries the response was YES. [2022-12-13 22:36:29,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7412 conditions, 3409 events. 2100/3409 cut-off events. For 543/741 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18562 event pairs, 583 based on Foata normal form. 72/2278 useless extension candidates. Maximal degree in co-relation 7401. Up to 1532 conditions per place. [2022-12-13 22:36:29,286 INFO L137 encePairwiseOnDemand]: 651/660 looper letters, 79 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2022-12-13 22:36:29,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 532 flow [2022-12-13 22:36:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:36:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:36:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1642 transitions. [2022-12-13 22:36:29,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49757575757575756 [2022-12-13 22:36:29,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1642 transitions. [2022-12-13 22:36:29,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1642 transitions. [2022-12-13 22:36:29,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:29,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1642 transitions. [2022-12-13 22:36:29,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.4) internal successors, (1642), 5 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,299 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 218 flow. Second operand 5 states and 1642 transitions. [2022-12-13 22:36:29,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 532 flow [2022-12-13 22:36:29,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:29,301 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 297 flow [2022-12-13 22:36:29,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=213, 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=297, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2022-12-13 22:36:29,302 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2022-12-13 22:36:29,302 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 297 flow [2022-12-13 22:36:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:29,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:29,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:36:29,302 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)] === [2022-12-13 22:36:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -424395559, now seen corresponding path program 1 times [2022-12-13 22:36:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:29,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902081606] [2022-12-13 22:36:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:29,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902081606] [2022-12-13 22:36:29,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902081606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:29,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:29,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033184674] [2022-12-13 22:36:29,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:29,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:29,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:29,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 660 [2022-12-13 22:36:29,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:29,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 660 [2022-12-13 22:36:29,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:29,651 INFO L130 PetriNetUnfolder]: 2156/3485 cut-off events. [2022-12-13 22:36:29,652 INFO L131 PetriNetUnfolder]: For 1897/2092 co-relation queries the response was YES. [2022-12-13 22:36:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 3485 events. 2156/3485 cut-off events. For 1897/2092 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18886 event pairs, 827 based on Foata normal form. 85/2999 useless extension candidates. Maximal degree in co-relation 9465. Up to 2547 conditions per place. [2022-12-13 22:36:29,663 INFO L137 encePairwiseOnDemand]: 652/660 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2022-12-13 22:36:29,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 491 flow [2022-12-13 22:36:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 969 transitions. [2022-12-13 22:36:29,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4893939393939394 [2022-12-13 22:36:29,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 969 transitions. [2022-12-13 22:36:29,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 969 transitions. [2022-12-13 22:36:29,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:29,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 969 transitions. [2022-12-13 22:36:29,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,669 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 297 flow. Second operand 3 states and 969 transitions. [2022-12-13 22:36:29,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 491 flow [2022-12-13 22:36:29,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:36:29,673 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 379 flow [2022-12-13 22:36:29,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=297, 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=379, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2022-12-13 22:36:29,673 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2022-12-13 22:36:29,673 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 379 flow [2022-12-13 22:36:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:29,674 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:29,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:36:29,674 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)] === [2022-12-13 22:36:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash -216519005, now seen corresponding path program 1 times [2022-12-13 22:36:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:29,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728901776] [2022-12-13 22:36:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:29,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:29,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:29,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728901776] [2022-12-13 22:36:29,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728901776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:29,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:29,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125429543] [2022-12-13 22:36:29,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:29,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:29,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 660 [2022-12-13 22:36:29,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:29,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:29,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 660 [2022-12-13 22:36:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:30,166 INFO L130 PetriNetUnfolder]: 2373/3734 cut-off events. [2022-12-13 22:36:30,166 INFO L131 PetriNetUnfolder]: For 3384/3602 co-relation queries the response was YES. [2022-12-13 22:36:30,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11388 conditions, 3734 events. 2373/3734 cut-off events. For 3384/3602 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19182 event pairs, 577 based on Foata normal form. 243/3368 useless extension candidates. Maximal degree in co-relation 11372. Up to 1832 conditions per place. [2022-12-13 22:36:30,180 INFO L137 encePairwiseOnDemand]: 652/660 looper letters, 75 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2022-12-13 22:36:30,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 766 flow [2022-12-13 22:36:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2022-12-13 22:36:30,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5065656565656566 [2022-12-13 22:36:30,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2022-12-13 22:36:30,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2022-12-13 22:36:30,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:30,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2022-12-13 22:36:30,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,194 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 379 flow. Second operand 3 states and 1003 transitions. [2022-12-13 22:36:30,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 766 flow [2022-12-13 22:36:30,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:30,203 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 543 flow [2022-12-13 22:36:30,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=355, 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=543, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2022-12-13 22:36:30,204 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2022-12-13 22:36:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 543 flow [2022-12-13 22:36:30,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:30,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:36:30,205 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)] === [2022-12-13 22:36:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash 181941061, now seen corresponding path program 1 times [2022-12-13 22:36:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:30,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167295711] [2022-12-13 22:36:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167295711] [2022-12-13 22:36:30,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167295711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:30,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:30,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496786450] [2022-12-13 22:36:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:30,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:30,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 660 [2022-12-13 22:36:30,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:30,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 660 [2022-12-13 22:36:30,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:30,530 INFO L130 PetriNetUnfolder]: 1251/2006 cut-off events. [2022-12-13 22:36:30,530 INFO L131 PetriNetUnfolder]: For 3330/3336 co-relation queries the response was YES. [2022-12-13 22:36:30,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 2006 events. 1251/2006 cut-off events. For 3330/3336 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9485 event pairs, 298 based on Foata normal form. 155/1836 useless extension candidates. Maximal degree in co-relation 6535. Up to 1347 conditions per place. [2022-12-13 22:36:30,537 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 101 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2022-12-13 22:36:30,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 117 transitions, 996 flow [2022-12-13 22:36:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2022-12-13 22:36:30,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085858585858586 [2022-12-13 22:36:30,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2022-12-13 22:36:30,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2022-12-13 22:36:30,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:30,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2022-12-13 22:36:30,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,549 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 543 flow. Second operand 3 states and 1007 transitions. [2022-12-13 22:36:30,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 117 transitions, 996 flow [2022-12-13 22:36:30,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 950 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:30,558 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 451 flow [2022-12-13 22:36:30,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=445, 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=451, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2022-12-13 22:36:30,559 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2022-12-13 22:36:30,559 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 451 flow [2022-12-13 22:36:30,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:30,560 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:30,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:36:30,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1890693260, now seen corresponding path program 1 times [2022-12-13 22:36:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:30,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069015663] [2022-12-13 22:36:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:30,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069015663] [2022-12-13 22:36:30,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069015663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:30,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:30,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:30,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290397487] [2022-12-13 22:36:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:30,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:30,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:30,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 660 [2022-12-13 22:36:30,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:30,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 660 [2022-12-13 22:36:30,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:30,835 INFO L130 PetriNetUnfolder]: 988/1708 cut-off events. [2022-12-13 22:36:30,835 INFO L131 PetriNetUnfolder]: For 2293/2293 co-relation queries the response was YES. [2022-12-13 22:36:30,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 1708 events. 988/1708 cut-off events. For 2293/2293 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8239 event pairs, 328 based on Foata normal form. 126/1595 useless extension candidates. Maximal degree in co-relation 5440. Up to 1150 conditions per place. [2022-12-13 22:36:30,841 INFO L137 encePairwiseOnDemand]: 654/660 looper letters, 55 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2022-12-13 22:36:30,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 563 flow [2022-12-13 22:36:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 970 transitions. [2022-12-13 22:36:30,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2022-12-13 22:36:30,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 970 transitions. [2022-12-13 22:36:30,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 970 transitions. [2022-12-13 22:36:30,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:30,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 970 transitions. [2022-12-13 22:36:30,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,846 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 451 flow. Second operand 3 states and 970 transitions. [2022-12-13 22:36:30,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 563 flow [2022-12-13 22:36:30,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 545 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 22:36:30,850 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 395 flow [2022-12-13 22:36:30,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=381, 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=395, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2022-12-13 22:36:30,850 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2022-12-13 22:36:30,850 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 395 flow [2022-12-13 22:36:30,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:30,850 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:36:30,851 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)] === [2022-12-13 22:36:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:30,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1916223188, now seen corresponding path program 1 times [2022-12-13 22:36:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:30,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459880188] [2022-12-13 22:36:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:30,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:30,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459880188] [2022-12-13 22:36:30,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459880188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:30,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:30,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456018006] [2022-12-13 22:36:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:30,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 660 [2022-12-13 22:36:30,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:30,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:30,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 660 [2022-12-13 22:36:30,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:31,028 INFO L130 PetriNetUnfolder]: 459/823 cut-off events. [2022-12-13 22:36:31,028 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2022-12-13 22:36:31,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 823 events. 459/823 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3333 event pairs, 140 based on Foata normal form. 42/748 useless extension candidates. Maximal degree in co-relation 2413. Up to 595 conditions per place. [2022-12-13 22:36:31,031 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 49 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2022-12-13 22:36:31,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 475 flow [2022-12-13 22:36:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2022-12-13 22:36:31,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2022-12-13 22:36:31,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2022-12-13 22:36:31,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2022-12-13 22:36:31,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:31,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2022-12-13 22:36:31,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,037 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 395 flow. Second operand 3 states and 1001 transitions. [2022-12-13 22:36:31,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 475 flow [2022-12-13 22:36:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 408 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 22:36:31,040 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 286 flow [2022-12-13 22:36:31,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=276, 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=286, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2022-12-13 22:36:31,040 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-12-13 22:36:31,041 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 286 flow [2022-12-13 22:36:31,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:31,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:31,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:36:31,041 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)] === [2022-12-13 22:36:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1358765290, now seen corresponding path program 1 times [2022-12-13 22:36:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953450060] [2022-12-13 22:36:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:31,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953450060] [2022-12-13 22:36:31,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953450060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:31,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:31,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170447459] [2022-12-13 22:36:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:31,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 660 [2022-12-13 22:36:31,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:31,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 660 [2022-12-13 22:36:31,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:31,320 INFO L130 PetriNetUnfolder]: 512/1021 cut-off events. [2022-12-13 22:36:31,320 INFO L131 PetriNetUnfolder]: For 785/785 co-relation queries the response was YES. [2022-12-13 22:36:31,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1021 events. 512/1021 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5032 event pairs, 155 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 2684. Up to 572 conditions per place. [2022-12-13 22:36:31,323 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 65 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2022-12-13 22:36:31,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 639 flow [2022-12-13 22:36:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2022-12-13 22:36:31,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2022-12-13 22:36:31,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2022-12-13 22:36:31,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2022-12-13 22:36:31,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:31,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2022-12-13 22:36:31,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,328 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 286 flow. Second operand 3 states and 999 transitions. [2022-12-13 22:36:31,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 639 flow [2022-12-13 22:36:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:31,331 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 431 flow [2022-12-13 22:36:31,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=280, 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=431, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2022-12-13 22:36:31,331 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-12-13 22:36:31,331 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 431 flow [2022-12-13 22:36:31,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:31,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:31,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:36:31,332 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)] === [2022-12-13 22:36:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash 391756475, now seen corresponding path program 1 times [2022-12-13 22:36:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:31,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153060502] [2022-12-13 22:36:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:31,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153060502] [2022-12-13 22:36:31,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153060502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:31,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:31,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240672209] [2022-12-13 22:36:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:31,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 660 [2022-12-13 22:36:31,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:31,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 660 [2022-12-13 22:36:31,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:31,614 INFO L130 PetriNetUnfolder]: 512/1011 cut-off events. [2022-12-13 22:36:31,614 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2022-12-13 22:36:31,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 1011 events. 512/1011 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4973 event pairs, 155 based on Foata normal form. 4/883 useless extension candidates. Maximal degree in co-relation 2804. Up to 417 conditions per place. [2022-12-13 22:36:31,618 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 72 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2022-12-13 22:36:31,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 714 flow [2022-12-13 22:36:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2022-12-13 22:36:31,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2022-12-13 22:36:31,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2022-12-13 22:36:31,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2022-12-13 22:36:31,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:31,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2022-12-13 22:36:31,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,629 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 431 flow. Second operand 3 states and 1008 transitions. [2022-12-13 22:36:31,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 714 flow [2022-12-13 22:36:31,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:31,635 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 415 flow [2022-12-13 22:36:31,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=405, 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=415, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2022-12-13 22:36:31,636 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2022-12-13 22:36:31,636 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 415 flow [2022-12-13 22:36:31,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:31,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 22:36:31,637 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)] === [2022-12-13 22:36:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -740435647, now seen corresponding path program 1 times [2022-12-13 22:36:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:31,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594006146] [2022-12-13 22:36:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:31,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594006146] [2022-12-13 22:36:31,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594006146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:31,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:31,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744050757] [2022-12-13 22:36:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:31,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:31,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:31,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 660 [2022-12-13 22:36:31,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:31,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 660 [2022-12-13 22:36:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:31,851 INFO L130 PetriNetUnfolder]: 509/948 cut-off events. [2022-12-13 22:36:31,851 INFO L131 PetriNetUnfolder]: For 1104/1105 co-relation queries the response was YES. [2022-12-13 22:36:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 948 events. 509/948 cut-off events. For 1104/1105 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4288 event pairs, 243 based on Foata normal form. 3/821 useless extension candidates. Maximal degree in co-relation 2676. Up to 801 conditions per place. [2022-12-13 22:36:31,854 INFO L137 encePairwiseOnDemand]: 658/660 looper letters, 47 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2022-12-13 22:36:31,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 511 flow [2022-12-13 22:36:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2022-12-13 22:36:31,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4904040404040404 [2022-12-13 22:36:31,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2022-12-13 22:36:31,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2022-12-13 22:36:31,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:31,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2022-12-13 22:36:31,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,859 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 415 flow. Second operand 3 states and 971 transitions. [2022-12-13 22:36:31,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 511 flow [2022-12-13 22:36:31,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:31,861 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 407 flow [2022-12-13 22:36:31,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=403, 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=407, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2022-12-13 22:36:31,862 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2022-12-13 22:36:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 407 flow [2022-12-13 22:36:31,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:31,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:31,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 22:36:31,862 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)] === [2022-12-13 22:36:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash 103868941, now seen corresponding path program 1 times [2022-12-13 22:36:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:31,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834133910] [2022-12-13 22:36:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:31,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:31,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834133910] [2022-12-13 22:36:31,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834133910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:31,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:31,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127376914] [2022-12-13 22:36:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:31,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:36:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:36:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:36:32,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 660 [2022-12-13 22:36:32,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:32,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 660 [2022-12-13 22:36:32,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:32,212 INFO L130 PetriNetUnfolder]: 508/969 cut-off events. [2022-12-13 22:36:32,212 INFO L131 PetriNetUnfolder]: For 823/823 co-relation queries the response was YES. [2022-12-13 22:36:32,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 969 events. 508/969 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4400 event pairs, 147 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 2605. Up to 585 conditions per place. [2022-12-13 22:36:32,215 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 65 selfloop transitions, 4 changer transitions 15/93 dead transitions. [2022-12-13 22:36:32,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 705 flow [2022-12-13 22:36:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1310 transitions. [2022-12-13 22:36:32,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2022-12-13 22:36:32,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1310 transitions. [2022-12-13 22:36:32,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1310 transitions. [2022-12-13 22:36:32,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:32,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1310 transitions. [2022-12-13 22:36:32,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 327.5) internal successors, (1310), 4 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,220 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,220 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 407 flow. Second operand 4 states and 1310 transitions. [2022-12-13 22:36:32,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 705 flow [2022-12-13 22:36:32,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:36:32,223 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 398 flow [2022-12-13 22:36:32,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=405, 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=398, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2022-12-13 22:36:32,224 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2022-12-13 22:36:32,224 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 398 flow [2022-12-13 22:36:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:32,224 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:32,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 22:36:32,224 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 455447282, now seen corresponding path program 1 times [2022-12-13 22:36:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:32,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031218758] [2022-12-13 22:36:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:32,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:32,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031218758] [2022-12-13 22:36:32,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031218758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:32,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:32,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:32,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795811658] [2022-12-13 22:36:32,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:32,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:32,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 660 [2022-12-13 22:36:32,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:32,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 660 [2022-12-13 22:36:32,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:32,468 INFO L130 PetriNetUnfolder]: 499/955 cut-off events. [2022-12-13 22:36:32,469 INFO L131 PetriNetUnfolder]: For 1126/1128 co-relation queries the response was YES. [2022-12-13 22:36:32,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 955 events. 499/955 cut-off events. For 1126/1128 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4469 event pairs, 168 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 2723. Up to 559 conditions per place. [2022-12-13 22:36:32,472 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 38 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2022-12-13 22:36:32,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 524 flow [2022-12-13 22:36:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2022-12-13 22:36:32,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.501010101010101 [2022-12-13 22:36:32,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2022-12-13 22:36:32,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2022-12-13 22:36:32,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:32,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2022-12-13 22:36:32,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,476 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 398 flow. Second operand 3 states and 992 transitions. [2022-12-13 22:36:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 524 flow [2022-12-13 22:36:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 501 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 22:36:32,479 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 403 flow [2022-12-13 22:36:32,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=373, 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=403, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2022-12-13 22:36:32,479 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2022-12-13 22:36:32,480 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 403 flow [2022-12-13 22:36:32,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:32,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:32,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 22:36:32,480 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-13 22:36:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash 455447281, now seen corresponding path program 1 times [2022-12-13 22:36:32,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:32,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58025620] [2022-12-13 22:36:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:32,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58025620] [2022-12-13 22:36:32,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58025620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:32,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:32,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:36:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151027827] [2022-12-13 22:36:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:36:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:36:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:36:32,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 660 [2022-12-13 22:36:32,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:32,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 660 [2022-12-13 22:36:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:32,699 INFO L130 PetriNetUnfolder]: 499/941 cut-off events. [2022-12-13 22:36:32,699 INFO L131 PetriNetUnfolder]: For 1227/1229 co-relation queries the response was YES. [2022-12-13 22:36:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 941 events. 499/941 cut-off events. For 1227/1229 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4354 event pairs, 168 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 2714. Up to 559 conditions per place. [2022-12-13 22:36:32,702 INFO L137 encePairwiseOnDemand]: 657/660 looper letters, 38 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2022-12-13 22:36:32,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 529 flow [2022-12-13 22:36:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:36:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:36:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-12-13 22:36:32,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2022-12-13 22:36:32,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-12-13 22:36:32,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-12-13 22:36:32,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:32,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-12-13 22:36:32,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,707 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 403 flow. Second operand 3 states and 980 transitions. [2022-12-13 22:36:32,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 529 flow [2022-12-13 22:36:32,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:32,710 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 401 flow [2022-12-13 22:36:32,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=371, 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=401, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2022-12-13 22:36:32,710 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 22:36:32,710 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 401 flow [2022-12-13 22:36:32,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:32,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:32,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 22:36:32,711 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)] === [2022-12-13 22:36:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash -401634701, now seen corresponding path program 1 times [2022-12-13 22:36:32,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:32,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892325726] [2022-12-13 22:36:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:32,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:32,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892325726] [2022-12-13 22:36:32,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892325726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:32,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:32,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:36:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183610915] [2022-12-13 22:36:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:32,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:36:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:36:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:36:32,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 660 [2022-12-13 22:36:32,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:32,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:32,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 660 [2022-12-13 22:36:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:33,090 INFO L130 PetriNetUnfolder]: 605/1029 cut-off events. [2022-12-13 22:36:33,091 INFO L131 PetriNetUnfolder]: For 1251/1251 co-relation queries the response was YES. [2022-12-13 22:36:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1029 events. 605/1029 cut-off events. For 1251/1251 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4395 event pairs, 173 based on Foata normal form. 40/930 useless extension candidates. Maximal degree in co-relation 2983. Up to 549 conditions per place. [2022-12-13 22:36:33,094 INFO L137 encePairwiseOnDemand]: 654/660 looper letters, 35 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2022-12-13 22:36:33,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 519 flow [2022-12-13 22:36:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1264 transitions. [2022-12-13 22:36:33,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2022-12-13 22:36:33,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1264 transitions. [2022-12-13 22:36:33,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1264 transitions. [2022-12-13 22:36:33,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:33,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1264 transitions. [2022-12-13 22:36:33,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,100 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 401 flow. Second operand 4 states and 1264 transitions. [2022-12-13 22:36:33,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 519 flow [2022-12-13 22:36:33,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 481 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 22:36:33,103 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 389 flow [2022-12-13 22:36:33,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=353, 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=389, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2022-12-13 22:36:33,103 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2022-12-13 22:36:33,104 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 389 flow [2022-12-13 22:36:33,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:33,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 22:36:33,104 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)] === [2022-12-13 22:36:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2095462393, now seen corresponding path program 1 times [2022-12-13 22:36:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:33,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998375980] [2022-12-13 22:36:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998375980] [2022-12-13 22:36:33,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998375980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:33,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:33,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629667106] [2022-12-13 22:36:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:33,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:36:33,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:36:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:36:33,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 660 [2022-12-13 22:36:33,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:33,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 660 [2022-12-13 22:36:33,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:33,475 INFO L130 PetriNetUnfolder]: 732/1193 cut-off events. [2022-12-13 22:36:33,476 INFO L131 PetriNetUnfolder]: For 1643/1643 co-relation queries the response was YES. [2022-12-13 22:36:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 1193 events. 732/1193 cut-off events. For 1643/1643 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4863 event pairs, 267 based on Foata normal form. 71/1107 useless extension candidates. Maximal degree in co-relation 3518. Up to 787 conditions per place. [2022-12-13 22:36:33,480 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 37 selfloop transitions, 18 changer transitions 1/60 dead transitions. [2022-12-13 22:36:33,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 529 flow [2022-12-13 22:36:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1281 transitions. [2022-12-13 22:36:33,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48522727272727273 [2022-12-13 22:36:33,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1281 transitions. [2022-12-13 22:36:33,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1281 transitions. [2022-12-13 22:36:33,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:33,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1281 transitions. [2022-12-13 22:36:33,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,489 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,489 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 389 flow. Second operand 4 states and 1281 transitions. [2022-12-13 22:36:33,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 529 flow [2022-12-13 22:36:33,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 22:36:33,494 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 374 flow [2022-12-13 22:36:33,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=344, 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=374, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-12-13 22:36:33,495 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-12-13 22:36:33,495 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 374 flow [2022-12-13 22:36:33,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:33,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 22:36:33,496 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)] === [2022-12-13 22:36:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:33,496 INFO L85 PathProgramCache]: Analyzing trace with hash -168546432, now seen corresponding path program 1 times [2022-12-13 22:36:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:33,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405410714] [2022-12-13 22:36:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:33,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:36:33,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:33,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405410714] [2022-12-13 22:36:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405410714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:36:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312017873] [2022-12-13 22:36:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:36:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:36:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:36:33,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 660 [2022-12-13 22:36:33,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:33,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 660 [2022-12-13 22:36:33,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:33,938 INFO L130 PetriNetUnfolder]: 594/1086 cut-off events. [2022-12-13 22:36:33,938 INFO L131 PetriNetUnfolder]: For 1562/1562 co-relation queries the response was YES. [2022-12-13 22:36:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 1086 events. 594/1086 cut-off events. For 1562/1562 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5083 event pairs, 165 based on Foata normal form. 0/930 useless extension candidates. Maximal degree in co-relation 3157. Up to 533 conditions per place. [2022-12-13 22:36:33,941 INFO L137 encePairwiseOnDemand]: 654/660 looper letters, 62 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2022-12-13 22:36:33,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 812 flow [2022-12-13 22:36:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:36:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:36:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2022-12-13 22:36:33,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49356060606060603 [2022-12-13 22:36:33,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2022-12-13 22:36:33,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2022-12-13 22:36:33,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:33,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2022-12-13 22:36:33,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,947 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 660.0) internal successors, (3300), 5 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,947 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 374 flow. Second operand 4 states and 1303 transitions. [2022-12-13 22:36:33,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 812 flow [2022-12-13 22:36:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 90 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:36:33,949 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 602 flow [2022-12-13 22:36:33,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=338, 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=602, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2022-12-13 22:36:33,950 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-12-13 22:36:33,950 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 602 flow [2022-12-13 22:36:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:33,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:33,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 22:36:33,951 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)] === [2022-12-13 22:36:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 943273196, now seen corresponding path program 2 times [2022-12-13 22:36:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:33,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012895995] [2022-12-13 22:36:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:34,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012895995] [2022-12-13 22:36:34,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012895995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:36:34,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:36:34,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:36:34,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936176206] [2022-12-13 22:36:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:36:34,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:36:34,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:34,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:36:34,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:36:34,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 660 [2022-12-13 22:36:34,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 602 flow. Second operand has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:34,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:34,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 660 [2022-12-13 22:36:34,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:34,324 INFO L130 PetriNetUnfolder]: 594/1084 cut-off events. [2022-12-13 22:36:34,324 INFO L131 PetriNetUnfolder]: For 2113/2113 co-relation queries the response was YES. [2022-12-13 22:36:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 1084 events. 594/1084 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5068 event pairs, 115 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 3316. Up to 399 conditions per place. [2022-12-13 22:36:34,328 INFO L137 encePairwiseOnDemand]: 655/660 looper letters, 56 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2022-12-13 22:36:34,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 921 flow [2022-12-13 22:36:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:36:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:36:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-12-13 22:36:34,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48727272727272725 [2022-12-13 22:36:34,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-12-13 22:36:34,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-12-13 22:36:34,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:34,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-12-13 22:36:34,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:34,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:34,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:34,335 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 602 flow. Second operand 5 states and 1608 transitions. [2022-12-13 22:36:34,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 921 flow [2022-12-13 22:36:34,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 883 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-12-13 22:36:34,339 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 678 flow [2022-12-13 22:36:34,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=560, 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=678, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2022-12-13 22:36:34,339 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2022-12-13 22:36:34,339 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 678 flow [2022-12-13 22:36:34,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:34,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:34,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:34,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 22:36:34,340 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)] === [2022-12-13 22:36:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -924328653, now seen corresponding path program 1 times [2022-12-13 22:36:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135816860] [2022-12-13 22:36:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135816860] [2022-12-13 22:36:34,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135816860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:36:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508078827] [2022-12-13 22:36:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:34,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:34,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:36:34,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:36:34,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:36:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 22:36:34,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:36:34,826 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 22:36:34,827 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 [2022-12-13 22:36:34,886 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 0 case distinctions, treesize of input 20 treesize of output 24 [2022-12-13 22:36:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:35,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:36:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:36:35,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508078827] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:36:35,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:36:35,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 22:36:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507830599] [2022-12-13 22:36:35,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:36:35,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:36:35,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:36:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:36:37,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 660 [2022-12-13 22:36:37,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 678 flow. Second operand has 12 states, 12 states have (on average 309.9166666666667) internal successors, (3719), 12 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:37,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:37,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 660 [2022-12-13 22:36:37,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:37,851 INFO L130 PetriNetUnfolder]: 680/1223 cut-off events. [2022-12-13 22:36:37,851 INFO L131 PetriNetUnfolder]: For 2729/2731 co-relation queries the response was YES. [2022-12-13 22:36:37,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 1223 events. 680/1223 cut-off events. For 2729/2731 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5264 event pairs, 189 based on Foata normal form. 1/1041 useless extension candidates. Maximal degree in co-relation 3861. Up to 726 conditions per place. [2022-12-13 22:36:37,854 INFO L137 encePairwiseOnDemand]: 654/660 looper letters, 66 selfloop transitions, 2 changer transitions 49/121 dead transitions. [2022-12-13 22:36:37,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 121 transitions, 1186 flow [2022-12-13 22:36:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:36:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:36:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2215 transitions. [2022-12-13 22:36:37,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47943722943722944 [2022-12-13 22:36:37,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2215 transitions. [2022-12-13 22:36:37,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2215 transitions. [2022-12-13 22:36:37,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:37,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2215 transitions. [2022-12-13 22:36:37,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 316.42857142857144) internal successors, (2215), 7 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:37,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 660.0) internal successors, (5280), 8 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:37,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 660.0) internal successors, (5280), 8 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:37,863 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 678 flow. Second operand 7 states and 2215 transitions. [2022-12-13 22:36:37,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 121 transitions, 1186 flow [2022-12-13 22:36:37,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 1148 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-12-13 22:36:37,868 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 594 flow [2022-12-13 22:36:37,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=640, 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=7, PETRI_FLOW=594, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2022-12-13 22:36:37,869 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2022-12-13 22:36:37,869 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 594 flow [2022-12-13 22:36:37,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 309.9166666666667) internal successors, (3719), 12 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:37,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:36:37,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:36:37,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:36:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:38,071 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)] === [2022-12-13 22:36:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:36:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -197171279, now seen corresponding path program 2 times [2022-12-13 22:36:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:36:38,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761011863] [2022-12-13 22:36:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:36:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:36:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:36:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:36:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761011863] [2022-12-13 22:36:38,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761011863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:36:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527821358] [2022-12-13 22:36:38,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:36:38,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:36:38,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:36:38,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:36:38,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:36:38,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:36:38,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 22:36:38,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:36:38,464 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 22:36:38,464 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 [2022-12-13 22:36:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:38,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:36:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:36:38,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527821358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:36:38,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:36:38,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2022-12-13 22:36:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344198398] [2022-12-13 22:36:38,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:36:38,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:36:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:36:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:36:38,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:36:40,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 660 [2022-12-13 22:36:40,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 309.3333333333333) internal successors, (4640), 15 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:40,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:36:40,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 660 [2022-12-13 22:36:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:36:40,766 INFO L130 PetriNetUnfolder]: 525/937 cut-off events. [2022-12-13 22:36:40,766 INFO L131 PetriNetUnfolder]: For 1833/1833 co-relation queries the response was YES. [2022-12-13 22:36:40,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 937 events. 525/937 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3701 event pairs, 115 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 2890. Up to 257 conditions per place. [2022-12-13 22:36:40,768 INFO L137 encePairwiseOnDemand]: 653/660 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2022-12-13 22:36:40,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 973 flow [2022-12-13 22:36:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:36:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:36:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2830 transitions. [2022-12-13 22:36:40,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764309764309764 [2022-12-13 22:36:40,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2830 transitions. [2022-12-13 22:36:40,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2830 transitions. [2022-12-13 22:36:40,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:36:40,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2830 transitions. [2022-12-13 22:36:40,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 314.44444444444446) internal successors, (2830), 9 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:40,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 660.0) internal successors, (6600), 10 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:40,778 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 660.0) internal successors, (6600), 10 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:40,778 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 594 flow. Second operand 9 states and 2830 transitions. [2022-12-13 22:36:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 973 flow [2022-12-13 22:36:40,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 939 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-13 22:36:40,781 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2022-12-13 22:36:40,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=562, 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=9, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2022-12-13 22:36:40,782 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2022-12-13 22:36:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2022-12-13 22:36:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 309.3333333333333) internal successors, (4640), 15 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:36:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2022-12-13 22:36:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2022-12-13 22:36:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-12-13 22:36:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-12-13 22:36:40,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2022-12-13 22:36:40,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2022-12-13 22:36:40,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2022-12-13 22:36:40,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:36:40,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:36:40,988 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] [2022-12-13 22:36:41,001 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:36:41,002 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:36:41,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:36:41 BasicIcfg [2022-12-13 22:36:41,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:36:41,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:36:41,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:36:41,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:36:41,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:36:19" (3/4) ... [2022-12-13 22:36:41,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:36:41,028 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2022-12-13 22:36:41,029 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2022-12-13 22:36:41,033 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 22:36:41,033 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 22:36:41,033 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 22:36:41,033 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:36:41,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:36:41,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:36:41,058 INFO L158 Benchmark]: Toolchain (without parser) took 23284.85ms. Allocated memory was 104.9MB in the beginning and 406.8MB in the end (delta: 302.0MB). Free memory was 66.6MB in the beginning and 273.5MB in the end (delta: -206.8MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,058 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 79.7MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:36:41,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.28ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 66.3MB in the beginning and 82.1MB in the end (delta: -15.7MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.80ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 78.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,058 INFO L158 Benchmark]: Boogie Preprocessor took 28.92ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 75.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,058 INFO L158 Benchmark]: RCFGBuilder took 530.90ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 95.5MB in the end (delta: -19.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,059 INFO L158 Benchmark]: TraceAbstraction took 21938.95ms. Allocated memory was 144.7MB in the beginning and 406.8MB in the end (delta: 262.1MB). Free memory was 94.4MB in the beginning and 276.7MB in the end (delta: -182.3MB). Peak memory consumption was 248.4MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,059 INFO L158 Benchmark]: Witness Printer took 46.47ms. Allocated memory is still 406.8MB. Free memory was 276.7MB in the beginning and 273.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:36:41,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 79.7MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.28ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 66.3MB in the beginning and 82.1MB in the end (delta: -15.7MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.80ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 78.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.92ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 75.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 530.90ms. Allocated memory is still 144.7MB. Free memory was 75.8MB in the beginning and 95.5MB in the end (delta: -19.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21938.95ms. Allocated memory was 144.7MB in the beginning and 406.8MB in the end (delta: 262.1MB). Free memory was 94.4MB in the beginning and 276.7MB in the end (delta: -182.3MB). Peak memory consumption was 248.4MB. Max. memory is 16.1GB. * Witness Printer took 46.47ms. Allocated memory is still 406.8MB. Free memory was 276.7MB in the beginning and 273.5MB in the end (delta: 3.3MB). 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: 6.2s, 231 PlacesBefore, 51 PlacesAfterwards, 248 TransitionsBefore, 55 TransitionsAfterwards, 12794 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 162 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 46 ConcurrentYvCompositions, 13 ChoiceCompositions, 307 TotalNumberOfCompositions, 19350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13357, independent: 13109, independent conditional: 0, independent unconditional: 13109, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7572, independent: 7499, independent conditional: 0, independent unconditional: 7499, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13357, independent: 5610, independent conditional: 0, independent unconditional: 5610, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 7572, unknown conditional: 0, unknown unconditional: 7572] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 244, Positive conditional cache size: 0, Positive unconditional cache size: 244, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, 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, 350 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: 21.8s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 3136 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1990 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6284 IncrementalHoareTripleChecker+Invalid, 6517 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 163 mSDtfsCounter, 6284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=23, InterpolantAutomatonStates: 94, 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, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 338 ConstructedInterpolants, 38 QuantifiedInterpolants, 3509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 618 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! [2022-12-13 22:36:41,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6317cee-14c7-4298-b81c-480d35c4c632/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE