./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 e7bb482b 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_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/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_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP --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 --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:56:54,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:56:54,209 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:56:54,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:56:54,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:56:54,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:56:54,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:56:54,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:56:54,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:56:54,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:56:54,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:56:54,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:56:54,268 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:56:54,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:56:54,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:56:54,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:56:54,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:56:54,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:56:54,272 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:56:54,273 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:56:54,273 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:56:54,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:56:54,274 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:56:54,276 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:56:54,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:56:54,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:56:54,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:56:54,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:56:54,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:56:54,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:54,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:56:54,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:56:54,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:56:54,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:56:54,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:56:54,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:56:54,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:56:54,283 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:56:54,283 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2023-11-06 21:56:54,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:56:54,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:56:54,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:56:54,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:56:54,591 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:56:54,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-06 21:56:57,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:56:58,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:56:58,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-06 21:56:58,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/data/4fdda5593/4d76d5ffa96d47fb8a72d8c8641ecf54/FLAGee6b5d899 [2023-11-06 21:56:58,101 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/data/4fdda5593/4d76d5ffa96d47fb8a72d8c8641ecf54 [2023-11-06 21:56:58,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:56:58,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:56:58,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:58,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:56:58,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:56:58,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:58" (1/1) ... [2023-11-06 21:56:58,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24647026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:58, skipping insertion in model container [2023-11-06 21:56:58,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:58" (1/1) ... [2023-11-06 21:56:58,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:56:59,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:59,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:56:59,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:59,506 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:56:59,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59 WrapperNode [2023-11-06 21:56:59,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:59,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:59,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:56:59,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:56:59,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,641 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 222 [2023-11-06 21:56:59,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:59,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:56:59,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:56:59,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:56:59,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:56:59,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:56:59,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:56:59,718 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:56:59,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (1/1) ... [2023-11-06 21:56:59,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:59,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:56:59,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:56:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-11-06 21:56:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-11-06 21:56:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-11-06 21:56:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:56:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:56:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:56:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:56:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:56:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:56:59,845 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:57:00,227 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:00,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:57:00,664 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:57:00,673 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:57:00,673 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:57:00,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:00 BoogieIcfgContainer [2023-11-06 21:57:00,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:57:00,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:57:00,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:57:00,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:57:00,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:58" (1/3) ... [2023-11-06 21:57:00,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a2c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:00, skipping insertion in model container [2023-11-06 21:57:00,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:59" (2/3) ... [2023-11-06 21:57:00,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a2c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:00, skipping insertion in model container [2023-11-06 21:57:00,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:00" (3/3) ... [2023-11-06 21:57:00,691 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-11-06 21:57:00,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:57:00,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-06 21:57:00,721 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:57:00,855 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-06 21:57:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 382 transitions, 791 flow [2023-11-06 21:57:01,093 INFO L124 PetriNetUnfolderBase]: 41/400 cut-off events. [2023-11-06 21:57:01,094 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:57:01,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 400 events. 41/400 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1177 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 256. Up to 11 conditions per place. [2023-11-06 21:57:01,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 382 transitions, 791 flow [2023-11-06 21:57:01,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 270 transitions, 556 flow [2023-11-06 21:57:01,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:57:01,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 270 transitions, 556 flow [2023-11-06 21:57:01,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 270 transitions, 556 flow [2023-11-06 21:57:01,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 270 transitions, 556 flow [2023-11-06 21:57:01,230 INFO L124 PetriNetUnfolderBase]: 41/400 cut-off events. [2023-11-06 21:57:01,230 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:57:01,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 400 events. 41/400 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1179 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 256. Up to 11 conditions per place. [2023-11-06 21:57:01,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 14636 [2023-11-06 21:57:11,235 INFO L134 LiptonReduction]: Checked pairs total: 23876 [2023-11-06 21:57:11,235 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-11-06 21:57:11,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:57:11,257 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;@78e91294, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:57:11,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 21:57:11,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:57:11,259 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:57:11,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:57:11,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:11,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:57:11,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:11,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1206, now seen corresponding path program 1 times [2023-11-06 21:57:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940840017] [2023-11-06 21:57:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:11,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940840017] [2023-11-06 21:57:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940840017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:11,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:57:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946369355] [2023-11-06 21:57:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:11,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:57:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:57:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:57:11,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 740 [2023-11-06 21:57:11,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 344.5) internal successors, (689), 2 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:11,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:11,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 740 [2023-11-06 21:57:11,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:11,909 INFO L124 PetriNetUnfolderBase]: 810/1300 cut-off events. [2023-11-06 21:57:11,910 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-06 21:57:11,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 1300 events. 810/1300 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6256 event pairs, 479 based on Foata normal form. 0/627 useless extension candidates. Maximal degree in co-relation 2321. Up to 1179 conditions per place. [2023-11-06 21:57:11,924 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 35 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-11-06 21:57:11,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 184 flow [2023-11-06 21:57:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:57:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:57:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 729 transitions. [2023-11-06 21:57:11,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925675675675676 [2023-11-06 21:57:11,956 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 729 transitions. [2023-11-06 21:57:11,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 729 transitions. [2023-11-06 21:57:11,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:11,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 729 transitions. [2023-11-06 21:57:11,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 364.5) internal successors, (729), 2 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:11,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:11,986 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:11,987 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 126 flow. Second operand 2 states and 729 transitions. [2023-11-06 21:57:11,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 184 flow [2023-11-06 21:57:11,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:11,995 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 110 flow [2023-11-06 21:57:11,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=110, 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=110, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-11-06 21:57:12,000 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-06 21:57:12,001 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 110 flow [2023-11-06 21:57:12,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 344.5) internal successors, (689), 2 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:12,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:57:12,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:57:12,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:12,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1194931, now seen corresponding path program 1 times [2023-11-06 21:57:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413103900] [2023-11-06 21:57:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413103900] [2023-11-06 21:57:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413103900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:57:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239800946] [2023-11-06 21:57:12,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:12,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:12,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:12,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 740 [2023-11-06 21:57:12,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:12,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 740 [2023-11-06 21:57:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:12,823 INFO L124 PetriNetUnfolderBase]: 1948/3125 cut-off events. [2023-11-06 21:57:12,823 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-06 21:57:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 3125 events. 1948/3125 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16399 event pairs, 693 based on Foata normal form. 0/1473 useless extension candidates. Maximal degree in co-relation 5937. Up to 1594 conditions per place. [2023-11-06 21:57:12,847 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 59 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-11-06 21:57:12,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 309 flow [2023-11-06 21:57:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-11-06 21:57:12,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48153153153153155 [2023-11-06 21:57:12,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-11-06 21:57:12,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-11-06 21:57:12,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:12,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-11-06 21:57:12,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,868 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 110 flow. Second operand 3 states and 1069 transitions. [2023-11-06 21:57:12,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 309 flow [2023-11-06 21:57:12,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:57:12,871 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 160 flow [2023-11-06 21:57:12,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=110, 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=160, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-06 21:57:12,873 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-06 21:57:12,873 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 160 flow [2023-11-06 21:57:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:12,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:12,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:57:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:57:12,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:12,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1196527, now seen corresponding path program 1 times [2023-11-06 21:57:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861563263] [2023-11-06 21:57:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:12,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861563263] [2023-11-06 21:57:12,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861563263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:12,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:12,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:12,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552181229] [2023-11-06 21:57:12,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:12,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:13,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-06 21:57:13,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:13,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-06 21:57:13,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:13,403 INFO L124 PetriNetUnfolderBase]: 1554/2401 cut-off events. [2023-11-06 21:57:13,404 INFO L125 PetriNetUnfolderBase]: For 580/650 co-relation queries the response was YES. [2023-11-06 21:57:13,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 2401 events. 1554/2401 cut-off events. For 580/650 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11170 event pairs, 765 based on Foata normal form. 5/1351 useless extension candidates. Maximal degree in co-relation 5206. Up to 2228 conditions per place. [2023-11-06 21:57:13,425 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 0 changer transitions 2/55 dead transitions. [2023-11-06 21:57:13,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 242 flow [2023-11-06 21:57:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1048 transitions. [2023-11-06 21:57:13,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2023-11-06 21:57:13,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1048 transitions. [2023-11-06 21:57:13,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1048 transitions. [2023-11-06 21:57:13,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:13,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1048 transitions. [2023-11-06 21:57:13,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:13,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:13,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:13,446 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 160 flow. Second operand 3 states and 1048 transitions. [2023-11-06 21:57:13,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 242 flow [2023-11-06 21:57:13,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:13,451 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 146 flow [2023-11-06 21:57:13,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=146, 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=146, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-11-06 21:57:13,452 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-06 21:57:13,452 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 146 flow [2023-11-06 21:57:13,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:13,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:13,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 21:57:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:57:13,454 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)] === [2023-11-06 21:57:13,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash 37042753, now seen corresponding path program 1 times [2023-11-06 21:57:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611349214] [2023-11-06 21:57:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611349214] [2023-11-06 21:57:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611349214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:13,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:13,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:57:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593011226] [2023-11-06 21:57:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:13,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:13,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-06 21:57:13,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 146 flow. Second operand has 3 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) [2023-11-06 21:57:13,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:13,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-06 21:57:13,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:14,180 INFO L124 PetriNetUnfolderBase]: 1931/3059 cut-off events. [2023-11-06 21:57:14,180 INFO L125 PetriNetUnfolderBase]: For 617/807 co-relation queries the response was YES. [2023-11-06 21:57:14,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 3059 events. 1931/3059 cut-off events. For 617/807 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15848 event pairs, 806 based on Foata normal form. 112/1857 useless extension candidates. Maximal degree in co-relation 6602. Up to 1726 conditions per place. [2023-11-06 21:57:14,211 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 68 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-06 21:57:14,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 382 flow [2023-11-06 21:57:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1078 transitions. [2023-11-06 21:57:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48558558558558557 [2023-11-06 21:57:14,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1078 transitions. [2023-11-06 21:57:14,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1078 transitions. [2023-11-06 21:57:14,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:14,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1078 transitions. [2023-11-06 21:57:14,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,235 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 146 flow. Second operand 3 states and 1078 transitions. [2023-11-06 21:57:14,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 382 flow [2023-11-06 21:57:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 376 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:14,241 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 174 flow [2023-11-06 21:57:14,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=142, 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=174, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-11-06 21:57:14,243 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-11-06 21:57:14,243 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 174 flow [2023-11-06 21:57:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-06 21:57:14,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:14,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 21:57:14,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:57:14,245 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)] === [2023-11-06 21:57:14,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 37042755, now seen corresponding path program 1 times [2023-11-06 21:57:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:14,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659175631] [2023-11-06 21:57:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:14,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659175631] [2023-11-06 21:57:14,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659175631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:14,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:14,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:57:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527950183] [2023-11-06 21:57:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:14,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:14,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-06 21:57:14,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:14,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-06 21:57:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:14,850 INFO L124 PetriNetUnfolderBase]: 1697/2668 cut-off events. [2023-11-06 21:57:14,855 INFO L125 PetriNetUnfolderBase]: For 378/541 co-relation queries the response was YES. [2023-11-06 21:57:14,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 2668 events. 1697/2668 cut-off events. For 378/541 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13173 event pairs, 821 based on Foata normal form. 142/1770 useless extension candidates. Maximal degree in co-relation 5741. Up to 2460 conditions per place. [2023-11-06 21:57:14,875 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-11-06 21:57:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 250 flow [2023-11-06 21:57:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-11-06 21:57:14,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387387387387386 [2023-11-06 21:57:14,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-11-06 21:57:14,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-11-06 21:57:14,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:14,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-11-06 21:57:14,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,894 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 174 flow. Second operand 3 states and 1052 transitions. [2023-11-06 21:57:14,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 250 flow [2023-11-06 21:57:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:14,897 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 168 flow [2023-11-06 21:57:14,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=166, 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=168, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2023-11-06 21:57:14,898 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-06 21:57:14,899 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 168 flow [2023-11-06 21:57:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:14,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:14,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:57:14,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:57:14,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:14,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1148441210, now seen corresponding path program 1 times [2023-11-06 21:57:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985909659] [2023-11-06 21:57:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:14,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985909659] [2023-11-06 21:57:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985909659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:15,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:15,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:57:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537835804] [2023-11-06 21:57:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:15,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 740 [2023-11-06 21:57:15,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:15,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:15,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 740 [2023-11-06 21:57:15,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:15,605 INFO L124 PetriNetUnfolderBase]: 2263/3568 cut-off events. [2023-11-06 21:57:15,605 INFO L125 PetriNetUnfolderBase]: For 398/559 co-relation queries the response was YES. [2023-11-06 21:57:15,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7546 conditions, 3568 events. 2263/3568 cut-off events. For 398/559 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18936 event pairs, 956 based on Foata normal form. 58/2196 useless extension candidates. Maximal degree in co-relation 7538. Up to 1844 conditions per place. [2023-11-06 21:57:15,643 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 68 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-06 21:57:15,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 412 flow [2023-11-06 21:57:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2023-11-06 21:57:15,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2023-11-06 21:57:15,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2023-11-06 21:57:15,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2023-11-06 21:57:15,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:15,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2023-11-06 21:57:15,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:15,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:15,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:15,663 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 168 flow. Second operand 3 states and 1075 transitions. [2023-11-06 21:57:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 412 flow [2023-11-06 21:57:15,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:15,668 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 215 flow [2023-11-06 21:57:15,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=167, 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=3, PETRI_FLOW=215, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-06 21:57:15,672 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-06 21:57:15,672 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 215 flow [2023-11-06 21:57:15,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:15,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:15,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:57:15,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:57:15,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:15,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1148441211, now seen corresponding path program 1 times [2023-11-06 21:57:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:15,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9477932] [2023-11-06 21:57:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9477932] [2023-11-06 21:57:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9477932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:15,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:15,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260678463] [2023-11-06 21:57:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:15,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:16,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 740 [2023-11-06 21:57:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 740 [2023-11-06 21:57:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:16,464 INFO L124 PetriNetUnfolderBase]: 1822/2895 cut-off events. [2023-11-06 21:57:16,464 INFO L125 PetriNetUnfolderBase]: For 501/664 co-relation queries the response was YES. [2023-11-06 21:57:16,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6268 conditions, 2895 events. 1822/2895 cut-off events. For 501/664 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14782 event pairs, 868 based on Foata normal form. 171/1927 useless extension candidates. Maximal degree in co-relation 6259. Up to 2663 conditions per place. [2023-11-06 21:57:16,486 INFO L140 encePairwiseOnDemand]: 738/740 looper letters, 41 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-06 21:57:16,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 297 flow [2023-11-06 21:57:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2023-11-06 21:57:16,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47612612612612615 [2023-11-06 21:57:16,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2023-11-06 21:57:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2023-11-06 21:57:16,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:16,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2023-11-06 21:57:16,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,503 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 215 flow. Second operand 3 states and 1057 transitions. [2023-11-06 21:57:16,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 297 flow [2023-11-06 21:57:16,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:16,508 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 201 flow [2023-11-06 21:57:16,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2023-11-06 21:57:16,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 21:57:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 201 flow [2023-11-06 21:57:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:16,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:57:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:57:16,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:16,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1238364891, now seen corresponding path program 1 times [2023-11-06 21:57:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114348943] [2023-11-06 21:57:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114348943] [2023-11-06 21:57:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114348943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315653474] [2023-11-06 21:57:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:16,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-06 21:57:16,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 332.5) internal successors, (1330), 4 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:16,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:16,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-06 21:57:16,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:17,177 INFO L124 PetriNetUnfolderBase]: 2102/3369 cut-off events. [2023-11-06 21:57:17,177 INFO L125 PetriNetUnfolderBase]: For 535/740 co-relation queries the response was YES. [2023-11-06 21:57:17,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3369 events. 2102/3369 cut-off events. For 535/740 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17904 event pairs, 670 based on Foata normal form. 73/2233 useless extension candidates. Maximal degree in co-relation 7253. Up to 2309 conditions per place. [2023-11-06 21:57:17,200 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 70 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2023-11-06 21:57:17,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 92 transitions, 454 flow [2023-11-06 21:57:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:57:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2023-11-06 21:57:17,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654054054054054 [2023-11-06 21:57:17,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2023-11-06 21:57:17,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2023-11-06 21:57:17,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:17,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2023-11-06 21:57:17,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.4) internal successors, (1722), 5 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,230 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 201 flow. Second operand 5 states and 1722 transitions. [2023-11-06 21:57:17,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 92 transitions, 454 flow [2023-11-06 21:57:17,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:17,237 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 257 flow [2023-11-06 21:57:17,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-11-06 21:57:17,240 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-06 21:57:17,241 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 257 flow [2023-11-06 21:57:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.5) internal successors, (1330), 4 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:17,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:17,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:57:17,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:17,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash -155713341, now seen corresponding path program 1 times [2023-11-06 21:57:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728490796] [2023-11-06 21:57:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728490796] [2023-11-06 21:57:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728490796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554246301] [2023-11-06 21:57:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:17,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:17,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:17,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-06 21:57:17,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:17,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-06 21:57:17,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:17,634 INFO L124 PetriNetUnfolderBase]: 1112/1833 cut-off events. [2023-11-06 21:57:17,634 INFO L125 PetriNetUnfolderBase]: For 993/993 co-relation queries the response was YES. [2023-11-06 21:57:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 1833 events. 1112/1833 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8785 event pairs, 275 based on Foata normal form. 145/1668 useless extension candidates. Maximal degree in co-relation 4861. Up to 1207 conditions per place. [2023-11-06 21:57:17,649 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 71 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-06 21:57:17,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 508 flow [2023-11-06 21:57:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:17,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2023-11-06 21:57:17,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806306306306306 [2023-11-06 21:57:17,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2023-11-06 21:57:17,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2023-11-06 21:57:17,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:17,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2023-11-06 21:57:17,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,665 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 257 flow. Second operand 3 states and 1067 transitions. [2023-11-06 21:57:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 508 flow [2023-11-06 21:57:17,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 504 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 21:57:17,673 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 235 flow [2023-11-06 21:57:17,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-06 21:57:17,673 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-11-06 21:57:17,674 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 235 flow [2023-11-06 21:57:17,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:17,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:57:17,675 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:17,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 371870217, now seen corresponding path program 1 times [2023-11-06 21:57:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:17,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737533863] [2023-11-06 21:57:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:17,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:17,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737533863] [2023-11-06 21:57:17,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737533863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:17,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:17,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406025508] [2023-11-06 21:57:17,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:17,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-06 21:57:17,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:17,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-06 21:57:17,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:18,136 INFO L124 PetriNetUnfolderBase]: 1216/1967 cut-off events. [2023-11-06 21:57:18,136 INFO L125 PetriNetUnfolderBase]: For 1325/1325 co-relation queries the response was YES. [2023-11-06 21:57:18,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5574 conditions, 1967 events. 1216/1967 cut-off events. For 1325/1325 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8885 event pairs, 327 based on Foata normal form. 94/1696 useless extension candidates. Maximal degree in co-relation 5561. Up to 957 conditions per place. [2023-11-06 21:57:18,151 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 59 selfloop transitions, 10 changer transitions 1/83 dead transitions. [2023-11-06 21:57:18,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 482 flow [2023-11-06 21:57:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-11-06 21:57:18,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47927927927927927 [2023-11-06 21:57:18,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:18,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,166 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 235 flow. Second operand 3 states and 1064 transitions. [2023-11-06 21:57:18,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 482 flow [2023-11-06 21:57:18,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:18,174 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 337 flow [2023-11-06 21:57:18,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-11-06 21:57:18,176 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-11-06 21:57:18,176 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 337 flow [2023-11-06 21:57:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:18,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:57:18,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:18,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1342886672, now seen corresponding path program 1 times [2023-11-06 21:57:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:18,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003233238] [2023-11-06 21:57:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:18,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003233238] [2023-11-06 21:57:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003233238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:18,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701191689] [2023-11-06 21:57:18,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:18,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:18,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 740 [2023-11-06 21:57:18,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:18,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 740 [2023-11-06 21:57:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:18,607 INFO L124 PetriNetUnfolderBase]: 997/1735 cut-off events. [2023-11-06 21:57:18,607 INFO L125 PetriNetUnfolderBase]: For 2215/2215 co-relation queries the response was YES. [2023-11-06 21:57:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 1735 events. 997/1735 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8406 event pairs, 305 based on Foata normal form. 77/1554 useless extension candidates. Maximal degree in co-relation 5166. Up to 1152 conditions per place. [2023-11-06 21:57:18,622 INFO L140 encePairwiseOnDemand]: 733/740 looper letters, 52 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2023-11-06 21:57:18,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 497 flow [2023-11-06 21:57:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-06 21:57:18,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657657657657658 [2023-11-06 21:57:18,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-06 21:57:18,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-06 21:57:18,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:18,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-06 21:57:18,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,640 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 337 flow. Second operand 3 states and 1034 transitions. [2023-11-06 21:57:18,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 497 flow [2023-11-06 21:57:18,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 471 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:57:18,654 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 349 flow [2023-11-06 21:57:18,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-11-06 21:57:18,655 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-11-06 21:57:18,655 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 349 flow [2023-11-06 21:57:18,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:18,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:57:18,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:18,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash 885044466, now seen corresponding path program 1 times [2023-11-06 21:57:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458868160] [2023-11-06 21:57:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458868160] [2023-11-06 21:57:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458868160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536841913] [2023-11-06 21:57:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:18,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 740 [2023-11-06 21:57:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:18,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 740 [2023-11-06 21:57:18,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:18,956 INFO L124 PetriNetUnfolderBase]: 466/830 cut-off events. [2023-11-06 21:57:18,957 INFO L125 PetriNetUnfolderBase]: For 1103/1103 co-relation queries the response was YES. [2023-11-06 21:57:18,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 830 events. 466/830 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3316 event pairs, 140 based on Foata normal form. 42/752 useless extension candidates. Maximal degree in co-relation 2416. Up to 602 conditions per place. [2023-11-06 21:57:18,963 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 47 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-06 21:57:18,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 434 flow [2023-11-06 21:57:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-11-06 21:57:18,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47927927927927927 [2023-11-06 21:57:18,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:18,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-11-06 21:57:18,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,978 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 349 flow. Second operand 3 states and 1064 transitions. [2023-11-06 21:57:18,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 434 flow [2023-11-06 21:57:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 370 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-06 21:57:18,987 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 250 flow [2023-11-06 21:57:18,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-06 21:57:18,988 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-06 21:57:18,988 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 250 flow [2023-11-06 21:57:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:18,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:18,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:57:18,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:18,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 35747846, now seen corresponding path program 1 times [2023-11-06 21:57:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:18,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880544741] [2023-11-06 21:57:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:18,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880544741] [2023-11-06 21:57:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880544741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:19,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:19,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:19,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384357821] [2023-11-06 21:57:19,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:19,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-06 21:57:19,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:19,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-06 21:57:19,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:19,438 INFO L124 PetriNetUnfolderBase]: 469/861 cut-off events. [2023-11-06 21:57:19,438 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2023-11-06 21:57:19,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 861 events. 469/861 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3605 event pairs, 155 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 2258. Up to 400 conditions per place. [2023-11-06 21:57:19,445 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 63 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-06 21:57:19,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 525 flow [2023-11-06 21:57:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-11-06 21:57:19,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-11-06 21:57:19,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-11-06 21:57:19,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-11-06 21:57:19,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:19,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-11-06 21:57:19,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,461 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 250 flow. Second operand 3 states and 1068 transitions. [2023-11-06 21:57:19,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 525 flow [2023-11-06 21:57:19,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:19,466 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 251 flow [2023-11-06 21:57:19,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-11-06 21:57:19,467 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 21:57:19,467 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 251 flow [2023-11-06 21:57:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:19,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:19,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:57:19,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:19,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:19,469 INFO L85 PathProgramCache]: Analyzing trace with hash -148938007, now seen corresponding path program 1 times [2023-11-06 21:57:19,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452221109] [2023-11-06 21:57:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452221109] [2023-11-06 21:57:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452221109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:19,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:19,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:19,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069103152] [2023-11-06 21:57:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:19,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:19,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-06 21:57:19,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 251 flow. Second operand has 3 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) [2023-11-06 21:57:19,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:19,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-06 21:57:19,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:19,859 INFO L124 PetriNetUnfolderBase]: 522/1027 cut-off events. [2023-11-06 21:57:19,860 INFO L125 PetriNetUnfolderBase]: For 753/753 co-relation queries the response was YES. [2023-11-06 21:57:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1027 events. 522/1027 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5001 event pairs, 155 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 2688. Up to 580 conditions per place. [2023-11-06 21:57:19,867 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 61 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2023-11-06 21:57:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 561 flow [2023-11-06 21:57:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-11-06 21:57:19,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47702702702702704 [2023-11-06 21:57:19,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-11-06 21:57:19,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-11-06 21:57:19,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:19,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-11-06 21:57:19,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:19,882 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 251 flow. Second operand 3 states and 1059 transitions. [2023-11-06 21:57:19,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 561 flow [2023-11-06 21:57:19,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:19,887 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 379 flow [2023-11-06 21:57:19,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-11-06 21:57:19,888 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-06 21:57:19,888 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 379 flow [2023-11-06 21:57:19,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-06 21:57:19,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:19,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:19,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:57:19,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:19,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -322093941, now seen corresponding path program 1 times [2023-11-06 21:57:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007144221] [2023-11-06 21:57:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007144221] [2023-11-06 21:57:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007144221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719687471] [2023-11-06 21:57:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:19,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:19,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:20,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-06 21:57:20,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:20,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-06 21:57:20,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:20,189 INFO L124 PetriNetUnfolderBase]: 519/962 cut-off events. [2023-11-06 21:57:20,189 INFO L125 PetriNetUnfolderBase]: For 1137/1139 co-relation queries the response was YES. [2023-11-06 21:57:20,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 962 events. 519/962 cut-off events. For 1137/1139 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4342 event pairs, 243 based on Foata normal form. 3/793 useless extension candidates. Maximal degree in co-relation 2691. Up to 811 conditions per place. [2023-11-06 21:57:20,197 INFO L140 encePairwiseOnDemand]: 738/740 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 21:57:20,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 471 flow [2023-11-06 21:57:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-06 21:57:20,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657657657657658 [2023-11-06 21:57:20,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-06 21:57:20,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-06 21:57:20,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:20,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-06 21:57:20,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,213 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 379 flow. Second operand 3 states and 1034 transitions. [2023-11-06 21:57:20,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 471 flow [2023-11-06 21:57:20,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:20,218 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 357 flow [2023-11-06 21:57:20,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-06 21:57:20,219 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-06 21:57:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 357 flow [2023-11-06 21:57:20,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:20,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:20,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:57:20,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:20,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash -5530985, now seen corresponding path program 1 times [2023-11-06 21:57:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347447651] [2023-11-06 21:57:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:20,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347447651] [2023-11-06 21:57:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347447651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611059967] [2023-11-06 21:57:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:20,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:20,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-06 21:57:20,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:20,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-06 21:57:20,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:20,809 INFO L124 PetriNetUnfolderBase]: 518/979 cut-off events. [2023-11-06 21:57:20,809 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-11-06 21:57:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 979 events. 518/979 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4404 event pairs, 147 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 2618. Up to 595 conditions per place. [2023-11-06 21:57:20,816 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 66 selfloop transitions, 4 changer transitions 16/95 dead transitions. [2023-11-06 21:57:20,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 672 flow [2023-11-06 21:57:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1390 transitions. [2023-11-06 21:57:20,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2023-11-06 21:57:20,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1390 transitions. [2023-11-06 21:57:20,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1390 transitions. [2023-11-06 21:57:20,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:20,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1390 transitions. [2023-11-06 21:57:20,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 347.5) internal successors, (1390), 4 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,835 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 357 flow. Second operand 4 states and 1390 transitions. [2023-11-06 21:57:20,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 672 flow [2023-11-06 21:57:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:20,839 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 372 flow [2023-11-06 21:57:20,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-11-06 21:57:20,840 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-11-06 21:57:20,840 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 372 flow [2023-11-06 21:57:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:20,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:20,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:57:20,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:20,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1357640395, now seen corresponding path program 1 times [2023-11-06 21:57:20,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:20,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358513310] [2023-11-06 21:57:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:20,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358513310] [2023-11-06 21:57:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358513310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:20,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409604260] [2023-11-06 21:57:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:20,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:20,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:21,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-06 21:57:21,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:21,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-06 21:57:21,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:21,255 INFO L124 PetriNetUnfolderBase]: 517/988 cut-off events. [2023-11-06 21:57:21,270 INFO L125 PetriNetUnfolderBase]: For 1177/1181 co-relation queries the response was YES. [2023-11-06 21:57:21,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 988 events. 517/988 cut-off events. For 1177/1181 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4622 event pairs, 174 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 2789. Up to 583 conditions per place. [2023-11-06 21:57:21,279 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-06 21:57:21,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 500 flow [2023-11-06 21:57:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-11-06 21:57:21,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2023-11-06 21:57:21,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-11-06 21:57:21,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-11-06 21:57:21,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:21,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-11-06 21:57:21,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,301 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 372 flow. Second operand 3 states and 1040 transitions. [2023-11-06 21:57:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 500 flow [2023-11-06 21:57:21,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 487 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 21:57:21,309 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 389 flow [2023-11-06 21:57:21,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-11-06 21:57:21,310 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-06 21:57:21,310 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 389 flow [2023-11-06 21:57:21,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:21,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:21,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:57:21,312 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)] === [2023-11-06 21:57:21,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1357640365, now seen corresponding path program 1 times [2023-11-06 21:57:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381749595] [2023-11-06 21:57:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:21,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381749595] [2023-11-06 21:57:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381749595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599733400] [2023-11-06 21:57:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:21,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-06 21:57:21,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:21,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-06 21:57:21,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:21,754 INFO L124 PetriNetUnfolderBase]: 517/974 cut-off events. [2023-11-06 21:57:21,755 INFO L125 PetriNetUnfolderBase]: For 1342/1346 co-relation queries the response was YES. [2023-11-06 21:57:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 974 events. 517/974 cut-off events. For 1342/1346 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4495 event pairs, 174 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 2793. Up to 583 conditions per place. [2023-11-06 21:57:21,762 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-11-06 21:57:21,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 517 flow [2023-11-06 21:57:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-11-06 21:57:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387387387387386 [2023-11-06 21:57:21,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-11-06 21:57:21,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-11-06 21:57:21,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:21,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-11-06 21:57:21,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,777 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 389 flow. Second operand 3 states and 1052 transitions. [2023-11-06 21:57:21,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 517 flow [2023-11-06 21:57:21,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 485 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:21,782 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 387 flow [2023-11-06 21:57:21,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2023-11-06 21:57:21,783 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-06 21:57:21,783 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 387 flow [2023-11-06 21:57:21,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:21,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:21,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:57:21,784 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:21,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -977454636, now seen corresponding path program 1 times [2023-11-06 21:57:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519872423] [2023-11-06 21:57:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519872423] [2023-11-06 21:57:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519872423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:21,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:21,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:57:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144654223] [2023-11-06 21:57:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:21,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:22,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 740 [2023-11-06 21:57:22,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:22,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 740 [2023-11-06 21:57:22,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:22,358 INFO L124 PetriNetUnfolderBase]: 623/1062 cut-off events. [2023-11-06 21:57:22,358 INFO L125 PetriNetUnfolderBase]: For 1342/1342 co-relation queries the response was YES. [2023-11-06 21:57:22,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 1062 events. 623/1062 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4516 event pairs, 179 based on Foata normal form. 40/906 useless extension candidates. Maximal degree in co-relation 3058. Up to 573 conditions per place. [2023-11-06 21:57:22,366 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 35 selfloop transitions, 19 changer transitions 0/60 dead transitions. [2023-11-06 21:57:22,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 507 flow [2023-11-06 21:57:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1344 transitions. [2023-11-06 21:57:22,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-11-06 21:57:22,372 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1344 transitions. [2023-11-06 21:57:22,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1344 transitions. [2023-11-06 21:57:22,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:22,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1344 transitions. [2023-11-06 21:57:22,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,384 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 387 flow. Second operand 4 states and 1344 transitions. [2023-11-06 21:57:22,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 507 flow [2023-11-06 21:57:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 465 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:22,390 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 373 flow [2023-11-06 21:57:22,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-11-06 21:57:22,391 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-06 21:57:22,391 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 373 flow [2023-11-06 21:57:22,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:22,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:22,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 21:57:22,393 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:22,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1303559043, now seen corresponding path program 1 times [2023-11-06 21:57:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:22,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231664631] [2023-11-06 21:57:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:22,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231664631] [2023-11-06 21:57:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231664631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:22,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501962129] [2023-11-06 21:57:22,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:22,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:22,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:22,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-06 21:57:22,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:22,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:22,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-06 21:57:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:23,034 INFO L124 PetriNetUnfolderBase]: 752/1227 cut-off events. [2023-11-06 21:57:23,034 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2023-11-06 21:57:23,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 1227 events. 752/1227 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5011 event pairs, 276 based on Foata normal form. 0/1054 useless extension candidates. Maximal degree in co-relation 3543. Up to 814 conditions per place. [2023-11-06 21:57:23,043 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 37 selfloop transitions, 18 changer transitions 2/61 dead transitions. [2023-11-06 21:57:23,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 513 flow [2023-11-06 21:57:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1361 transitions. [2023-11-06 21:57:23,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597972972972973 [2023-11-06 21:57:23,050 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1361 transitions. [2023-11-06 21:57:23,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1361 transitions. [2023-11-06 21:57:23,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:23,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1361 transitions. [2023-11-06 21:57:23,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 340.25) internal successors, (1361), 4 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,065 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 373 flow. Second operand 4 states and 1361 transitions. [2023-11-06 21:57:23,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 513 flow [2023-11-06 21:57:23,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 475 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:57:23,070 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 353 flow [2023-11-06 21:57:23,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=353, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-06 21:57:23,071 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 21:57:23,072 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 353 flow [2023-11-06 21:57:23,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:23,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 21:57:23,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:23,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2074659744, now seen corresponding path program 1 times [2023-11-06 21:57:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188189481] [2023-11-06 21:57:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:57:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188189481] [2023-11-06 21:57:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188189481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855241873] [2023-11-06 21:57:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:23,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 740 [2023-11-06 21:57:23,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:23,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 740 [2023-11-06 21:57:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:23,872 INFO L124 PetriNetUnfolderBase]: 603/1105 cut-off events. [2023-11-06 21:57:23,872 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2023-11-06 21:57:23,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 1105 events. 603/1105 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5177 event pairs, 168 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 3149. Up to 544 conditions per place. [2023-11-06 21:57:23,881 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 62 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2023-11-06 21:57:23,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 778 flow [2023-11-06 21:57:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1379 transitions. [2023-11-06 21:57:23,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46587837837837837 [2023-11-06 21:57:23,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1379 transitions. [2023-11-06 21:57:23,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1379 transitions. [2023-11-06 21:57:23,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:23,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1379 transitions. [2023-11-06 21:57:23,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.75) internal successors, (1379), 4 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 740.0) internal successors, (3700), 5 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,899 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 353 flow. Second operand 4 states and 1379 transitions. [2023-11-06 21:57:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 778 flow [2023-11-06 21:57:23,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 90 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:57:23,905 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 568 flow [2023-11-06 21:57:23,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=568, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-11-06 21:57:23,906 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-06 21:57:23,906 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 568 flow [2023-11-06 21:57:23,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:23,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:23,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:23,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 21:57:23,907 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:23,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash -749925838, now seen corresponding path program 2 times [2023-11-06 21:57:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192266978] [2023-11-06 21:57:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192266978] [2023-11-06 21:57:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192266978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:57:24,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902735428] [2023-11-06 21:57:24,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:24,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:24,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 740 [2023-11-06 21:57:24,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:24,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:24,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 740 [2023-11-06 21:57:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:24,572 INFO L124 PetriNetUnfolderBase]: 603/1107 cut-off events. [2023-11-06 21:57:24,573 INFO L125 PetriNetUnfolderBase]: For 2074/2074 co-relation queries the response was YES. [2023-11-06 21:57:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1107 events. 603/1107 cut-off events. For 2074/2074 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5176 event pairs, 118 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 3318. Up to 408 conditions per place. [2023-11-06 21:57:24,581 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 56 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2023-11-06 21:57:24,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 883 flow [2023-11-06 21:57:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:57:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1703 transitions. [2023-11-06 21:57:24,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602702702702703 [2023-11-06 21:57:24,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1703 transitions. [2023-11-06 21:57:24,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1703 transitions. [2023-11-06 21:57:24,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:24,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1703 transitions. [2023-11-06 21:57:24,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 340.6) internal successors, (1703), 5 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:24,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:24,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:24,599 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 568 flow. Second operand 5 states and 1703 transitions. [2023-11-06 21:57:24,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 883 flow [2023-11-06 21:57:24,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 845 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-11-06 21:57:24,607 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 640 flow [2023-11-06 21:57:24,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=640, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2023-11-06 21:57:24,608 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-06 21:57:24,609 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 640 flow [2023-11-06 21:57:24,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:24,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:24,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:24,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 21:57:24,610 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:24,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2091536956, now seen corresponding path program 1 times [2023-11-06 21:57:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159813389] [2023-11-06 21:57:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:24,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159813389] [2023-11-06 21:57:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159813389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637525905] [2023-11-06 21:57:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:24,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:24,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:24,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:24,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:57:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:57:25,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:25,339 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 21:57:25,340 INFO L351 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 20 treesize of output 27 [2023-11-06 21:57:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:25,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:26,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637525905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:26,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:26,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2023-11-06 21:57:26,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657416741] [2023-11-06 21:57:26,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:57:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:57:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:57:28,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 740 [2023-11-06 21:57:28,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 640 flow. Second operand has 11 states, 11 states have (on average 330.45454545454544) internal successors, (3635), 11 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:28,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:28,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 740 [2023-11-06 21:57:28,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:28,938 INFO L124 PetriNetUnfolderBase]: 689/1246 cut-off events. [2023-11-06 21:57:28,939 INFO L125 PetriNetUnfolderBase]: For 2690/2692 co-relation queries the response was YES. [2023-11-06 21:57:28,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3899 conditions, 1246 events. 689/1246 cut-off events. For 2690/2692 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5424 event pairs, 192 based on Foata normal form. 1/1060 useless extension candidates. Maximal degree in co-relation 3882. Up to 726 conditions per place. [2023-11-06 21:57:28,948 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 66 selfloop transitions, 2 changer transitions 59/131 dead transitions. [2023-11-06 21:57:28,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1203 flow [2023-11-06 21:57:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:57:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:57:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2046 transitions. [2023-11-06 21:57:28,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608108108108108 [2023-11-06 21:57:28,956 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2046 transitions. [2023-11-06 21:57:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2046 transitions. [2023-11-06 21:57:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:28,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2046 transitions. [2023-11-06 21:57:28,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:28,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:28,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:28,971 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 640 flow. Second operand 6 states and 2046 transitions. [2023-11-06 21:57:28,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1203 flow [2023-11-06 21:57:28,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 131 transitions, 1169 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-06 21:57:28,982 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 566 flow [2023-11-06 21:57:28,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=6, PETRI_FLOW=566, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-06 21:57:28,983 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-11-06 21:57:28,983 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 566 flow [2023-11-06 21:57:28,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 330.45454545454544) internal successors, (3635), 11 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:28,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:28,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:28,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 21:57:29,192 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:57:29,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 312618912, now seen corresponding path program 2 times [2023-11-06 21:57:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41860776] [2023-11-06 21:57:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:29,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41860776] [2023-11-06 21:57:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41860776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450930626] [2023-11-06 21:57:29,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:57:29,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:29,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:29,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:57:29,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:57:29,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:57:29,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:57:29,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:29,881 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 21:57:29,882 INFO L351 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 20 treesize of output 27 [2023-11-06 21:57:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:30,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:30,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450930626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:30,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:30,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-11-06 21:57:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37687472] [2023-11-06 21:57:30,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:30,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:57:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:57:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:32,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 740 [2023-11-06 21:57:32,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 566 flow. Second operand has 15 states, 15 states have (on average 328.3333333333333) internal successors, (4925), 15 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:32,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:32,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 740 [2023-11-06 21:57:32,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:33,533 INFO L124 PetriNetUnfolderBase]: 530/948 cut-off events. [2023-11-06 21:57:33,533 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2023-11-06 21:57:33,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 948 events. 530/948 cut-off events. For 1745/1745 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3767 event pairs, 118 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 2871. Up to 268 conditions per place. [2023-11-06 21:57:33,536 INFO L140 encePairwiseOnDemand]: 733/740 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-11-06 21:57:33,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 945 flow [2023-11-06 21:57:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:57:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:57:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3001 transitions. [2023-11-06 21:57:33,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506006006006006 [2023-11-06 21:57:33,546 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3001 transitions. [2023-11-06 21:57:33,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3001 transitions. [2023-11-06 21:57:33,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:33,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3001 transitions. [2023-11-06 21:57:33,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 333.44444444444446) internal successors, (3001), 9 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 740.0) internal successors, (7400), 10 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 740.0) internal successors, (7400), 10 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,566 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 566 flow. Second operand 9 states and 3001 transitions. [2023-11-06 21:57:33,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 945 flow [2023-11-06 21:57:33,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 905 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-06 21:57:33,574 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-11-06 21:57:33,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=63, PETRI_TRANSITIONS=0} [2023-11-06 21:57:33,575 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-06 21:57:33,575 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-11-06 21:57:33,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 328.3333333333333) internal successors, (4925), 15 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:33,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2023-11-06 21:57:33,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2023-11-06 21:57:33,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-11-06 21:57:33,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-11-06 21:57:33,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2023-11-06 21:57:33,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2023-11-06 21:57:33,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2023-11-06 21:57:33,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2023-11-06 21:57:33,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-11-06 21:57:33,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-11-06 21:57:33,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-11-06 21:57:33,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2023-11-06 21:57:33,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-11-06 21:57:33,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-11-06 21:57:33,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2023-11-06 21:57:33,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2023-11-06 21:57:33,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2023-11-06 21:57:33,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2023-11-06 21:57:33,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-11-06 21:57:33,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-11-06 21:57:33,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-11-06 21:57:33,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2023-11-06 21:57:33,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-11-06 21:57:33,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-11-06 21:57:33,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2023-11-06 21:57:33,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2023-11-06 21:57:33,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:57:33,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:33,793 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] [2023-11-06 21:57:33,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:57:33,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:57:33,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:33 BasicIcfg [2023-11-06 21:57:33,803 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:57:33,804 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:57:33,804 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:57:33,804 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:57:33,805 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:00" (3/4) ... [2023-11-06 21:57:33,807 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:57:33,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-11-06 21:57:33,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-11-06 21:57:33,819 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-06 21:57:33,819 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-06 21:57:33,820 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:57:33,820 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:57:33,888 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:57:33,888 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:57:33,888 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:57:33,890 INFO L158 Benchmark]: Toolchain (without parser) took 35778.90ms. Allocated memory was 125.8MB in the beginning and 486.5MB in the end (delta: 360.7MB). Free memory was 78.2MB in the beginning and 173.2MB in the end (delta: -95.0MB). Peak memory consumption was 268.5MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,890 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:57:33,891 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1392.99ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 78.2MB in the beginning and 92.5MB in the end (delta: -14.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.19ms. Allocated memory is still 157.3MB. Free memory was 91.8MB in the beginning and 88.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,892 INFO L158 Benchmark]: Boogie Preprocessor took 75.36ms. Allocated memory is still 157.3MB. Free memory was 88.3MB in the beginning and 85.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,892 INFO L158 Benchmark]: RCFGBuilder took 964.90ms. Allocated memory is still 157.3MB. Free memory was 85.5MB in the beginning and 108.3MB in the end (delta: -22.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,893 INFO L158 Benchmark]: TraceAbstraction took 33118.07ms. Allocated memory was 157.3MB in the beginning and 486.5MB in the end (delta: 329.3MB). Free memory was 107.3MB in the beginning and 176.6MB in the end (delta: -69.2MB). Peak memory consumption was 260.2MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,893 INFO L158 Benchmark]: Witness Printer took 84.68ms. Allocated memory is still 486.5MB. Free memory was 176.6MB in the beginning and 173.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:57:33,900 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1392.99ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 78.2MB in the beginning and 92.5MB in the end (delta: -14.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 133.19ms. Allocated memory is still 157.3MB. Free memory was 91.8MB in the beginning and 88.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.36ms. Allocated memory is still 157.3MB. Free memory was 88.3MB in the beginning and 85.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 964.90ms. Allocated memory is still 157.3MB. Free memory was 85.5MB in the beginning and 108.3MB in the end (delta: -22.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33118.07ms. Allocated memory was 157.3MB in the beginning and 486.5MB in the end (delta: 329.3MB). Free memory was 107.3MB in the beginning and 176.6MB in the end (delta: -69.2MB). Peak memory consumption was 260.2MB. Max. memory is 16.1GB. * Witness Printer took 84.68ms. Allocated memory is still 486.5MB. Free memory was 176.6MB in the beginning and 173.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 247 PlacesBefore, 51 PlacesAfterwards, 270 TransitionsBefore, 55 TransitionsAfterwards, 14636 CoEnabledTransitionPairs, 9 FixpointIterations, 86 TrivialSequentialCompositions, 174 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 65 ConcurrentYvCompositions, 19 ChoiceCompositions, 358 TotalNumberOfCompositions, 23876 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17807, independent: 17472, independent conditional: 0, independent unconditional: 17472, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8914, independent: 8827, independent conditional: 0, independent unconditional: 8827, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17807, independent: 8645, independent conditional: 0, independent unconditional: 8645, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 8914, unknown conditional: 0, unknown unconditional: 8914] , Statistics on independence cache: Total cache size (in pairs): 307, Positive cache size: 283, Positive conditional cache size: 0, Positive unconditional cache size: 283, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1691]: 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: 1691]: 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: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1691]: 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: 1691]: 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, 375 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: 32.9s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2887 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1743 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6493 IncrementalHoareTripleChecker+Invalid, 6661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 249 mSDtfsCounter, 6493 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=640occurred in iteration=22, InterpolantAutomatonStates: 88, 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, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 330 ConstructedInterpolants, 39 QuantifiedInterpolants, 3479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 606 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 28 InterpolantComputations, 22 PerfectInterpolantSequences, 19/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:57:33,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_791516a6-e6cc-42da-911a-d7738a131f58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE