./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 9bd2c7ff 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_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/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_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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-9bd2c7f [2023-11-19 07:37:50,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:50,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:37:50,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:50,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:50,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:50,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:50,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:50,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:50,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:50,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:50,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:50,589 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:50,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:50,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:50,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:50,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:50,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:50,592 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:37:50,593 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:37:50,593 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:37:50,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:50,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:37:50,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:50,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:50,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:50,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:50,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:50,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:50,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:50,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:50,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:50,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:50,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:50,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:50,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:50,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:50,602 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:50,602 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_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2023-11-19 07:37:50,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:50,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:50,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:50,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:50,954 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:50,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-19 07:37:54,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:54,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:54,658 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-19 07:37:54,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/data/7682175e1/ce4a7e8637bc41b29379c83915e37500/FLAGf57389be2 [2023-11-19 07:37:54,715 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/data/7682175e1/ce4a7e8637bc41b29379c83915e37500 [2023-11-19 07:37:54,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:54,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:54,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:54,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:54,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:54,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:54" (1/1) ... [2023-11-19 07:37:54,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580b718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:54, skipping insertion in model container [2023-11-19 07:37:54,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:54" (1/1) ... [2023-11-19 07:37:54,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:55,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:55,795 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:55,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:56,093 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:56,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56 WrapperNode [2023-11-19 07:37:56,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:56,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:56,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:56,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:56,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,225 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 222 [2023-11-19 07:37:56,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:56,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:56,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:56,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:56,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:56,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:56,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:56,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:56,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:56,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-11-19 07:37:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-11-19 07:37:56,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-11-19 07:37:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-11-19 07:37:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:37:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:37:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:56,426 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:37:56,770 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:56,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:57,188 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:57,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:57,201 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:37:57,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:57 BoogieIcfgContainer [2023-11-19 07:37:57,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:57,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:57,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:57,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:57,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:54" (1/3) ... [2023-11-19 07:37:57,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf5ad40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:57, skipping insertion in model container [2023-11-19 07:37:57,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (2/3) ... [2023-11-19 07:37:57,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf5ad40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:57, skipping insertion in model container [2023-11-19 07:37:57,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:57" (3/3) ... [2023-11-19 07:37:57,215 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-11-19 07:37:57,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:57,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-19 07:37:57,235 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:57,393 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-19 07:37:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 382 transitions, 791 flow [2023-11-19 07:37:57,725 INFO L124 PetriNetUnfolderBase]: 41/400 cut-off events. [2023-11-19 07:37:57,727 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:57,739 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. [2023-11-19 07:37:57,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 382 transitions, 791 flow [2023-11-19 07:37:57,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 270 transitions, 556 flow [2023-11-19 07:37:57,758 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:57,776 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 270 transitions, 556 flow [2023-11-19 07:37:57,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 270 transitions, 556 flow [2023-11-19 07:37:57,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 270 transitions, 556 flow [2023-11-19 07:37:57,870 INFO L124 PetriNetUnfolderBase]: 41/400 cut-off events. [2023-11-19 07:37:57,871 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:57,878 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. [2023-11-19 07:37:57,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 14636 [2023-11-19 07:38:07,495 INFO L134 LiptonReduction]: Checked pairs total: 23876 [2023-11-19 07:38:07,495 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-11-19 07:38:07,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:07,521 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;@6c3fdefe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:07,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 07:38:07,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:07,524 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:38:07,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:07,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:38:07,526 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)] === [2023-11-19 07:38:07,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1206, now seen corresponding path program 1 times [2023-11-19 07:38:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701484460] [2023-11-19 07:38:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:07,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701484460] [2023-11-19 07:38:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701484460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:07,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:07,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:38:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942119668] [2023-11-19 07:38:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:07,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:07,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 740 [2023-11-19 07:38:07,827 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) [2023-11-19 07:38:07,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:07,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 740 [2023-11-19 07:38:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:08,089 INFO L124 PetriNetUnfolderBase]: 810/1300 cut-off events. [2023-11-19 07:38:08,089 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-19 07:38:08,091 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. [2023-11-19 07:38:08,102 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 35 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-11-19 07:38:08,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 184 flow [2023-11-19 07:38:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:38:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 729 transitions. [2023-11-19 07:38:08,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925675675675676 [2023-11-19 07:38:08,124 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 729 transitions. [2023-11-19 07:38:08,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 729 transitions. [2023-11-19 07:38:08,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:08,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 729 transitions. [2023-11-19 07:38:08,140 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) [2023-11-19 07:38:08,149 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) [2023-11-19 07:38:08,151 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) [2023-11-19 07:38:08,154 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 126 flow. Second operand 2 states and 729 transitions. [2023-11-19 07:38:08,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 184 flow [2023-11-19 07:38:08,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:08,161 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 110 flow [2023-11-19 07:38:08,163 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} [2023-11-19 07:38:08,168 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-19 07:38:08,168 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 110 flow [2023-11-19 07:38:08,169 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) [2023-11-19 07:38:08,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:08,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:08,170 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)] === [2023-11-19 07:38:08,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1194931, now seen corresponding path program 1 times [2023-11-19 07:38:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643922147] [2023-11-19 07:38:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:08,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643922147] [2023-11-19 07:38:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643922147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5087525] [2023-11-19 07:38:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:08,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:08,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 740 [2023-11-19 07:38:08,507 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) [2023-11-19 07:38:08,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:08,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 740 [2023-11-19 07:38:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:09,014 INFO L124 PetriNetUnfolderBase]: 1948/3125 cut-off events. [2023-11-19 07:38:09,015 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:38:09,019 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. [2023-11-19 07:38:09,039 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 59 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-11-19 07:38:09,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 309 flow [2023-11-19 07:38:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-11-19 07:38:09,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48153153153153155 [2023-11-19 07:38:09,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-11-19 07:38:09,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-11-19 07:38:09,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:09,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-11-19 07:38:09,049 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) [2023-11-19 07:38:09,056 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) [2023-11-19 07:38:09,058 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) [2023-11-19 07:38:09,059 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 110 flow. Second operand 3 states and 1069 transitions. [2023-11-19 07:38:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 309 flow [2023-11-19 07:38:09,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:09,063 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 160 flow [2023-11-19 07:38:09,063 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} [2023-11-19 07:38:09,064 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-19 07:38:09,064 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 160 flow [2023-11-19 07:38:09,065 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) [2023-11-19 07:38:09,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:09,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:09,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:09,066 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)] === [2023-11-19 07:38:09,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1196527, now seen corresponding path program 1 times [2023-11-19 07:38:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:09,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146260192] [2023-11-19 07:38:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:09,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:09,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146260192] [2023-11-19 07:38:09,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146260192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:09,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:09,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564619177] [2023-11-19 07:38:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:09,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:09,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:09,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-19 07:38:09,238 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) [2023-11-19 07:38:09,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:09,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-19 07:38:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:09,623 INFO L124 PetriNetUnfolderBase]: 1554/2401 cut-off events. [2023-11-19 07:38:09,623 INFO L125 PetriNetUnfolderBase]: For 580/650 co-relation queries the response was YES. [2023-11-19 07:38:09,629 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. [2023-11-19 07:38:09,645 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 0 changer transitions 2/55 dead transitions. [2023-11-19 07:38:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 242 flow [2023-11-19 07:38:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1048 transitions. [2023-11-19 07:38:09,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2023-11-19 07:38:09,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1048 transitions. [2023-11-19 07:38:09,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1048 transitions. [2023-11-19 07:38:09,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:09,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1048 transitions. [2023-11-19 07:38:09,656 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) [2023-11-19 07:38:09,663 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) [2023-11-19 07:38:09,665 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) [2023-11-19 07:38:09,666 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 160 flow. Second operand 3 states and 1048 transitions. [2023-11-19 07:38:09,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 242 flow [2023-11-19 07:38:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:09,672 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 146 flow [2023-11-19 07:38:09,673 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} [2023-11-19 07:38:09,674 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-19 07:38:09,678 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 146 flow [2023-11-19 07:38:09,679 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) [2023-11-19 07:38:09,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:09,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:38:09,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:09,680 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)] === [2023-11-19 07:38:09,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:09,682 INFO L85 PathProgramCache]: Analyzing trace with hash 37042753, now seen corresponding path program 1 times [2023-11-19 07:38:09,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032872920] [2023-11-19 07:38:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:09,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032872920] [2023-11-19 07:38:09,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032872920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:09,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:09,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:09,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063926637] [2023-11-19 07:38:09,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:09,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:09,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:09,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:09,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-19 07:38:09,969 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) [2023-11-19 07:38:09,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:09,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-19 07:38:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:10,430 INFO L124 PetriNetUnfolderBase]: 1931/3059 cut-off events. [2023-11-19 07:38:10,431 INFO L125 PetriNetUnfolderBase]: For 617/807 co-relation queries the response was YES. [2023-11-19 07:38:10,437 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. [2023-11-19 07:38:10,458 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 68 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-19 07:38:10,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 382 flow [2023-11-19 07:38:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1078 transitions. [2023-11-19 07:38:10,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48558558558558557 [2023-11-19 07:38:10,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1078 transitions. [2023-11-19 07:38:10,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1078 transitions. [2023-11-19 07:38:10,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:10,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1078 transitions. [2023-11-19 07:38:10,468 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) [2023-11-19 07:38:10,475 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) [2023-11-19 07:38:10,477 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) [2023-11-19 07:38:10,477 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 146 flow. Second operand 3 states and 1078 transitions. [2023-11-19 07:38:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 382 flow [2023-11-19 07:38:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 376 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:10,482 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 174 flow [2023-11-19 07:38:10,482 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} [2023-11-19 07:38:10,483 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-11-19 07:38:10,483 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 174 flow [2023-11-19 07:38:10,484 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) [2023-11-19 07:38:10,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:10,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:38:10,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:10,485 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)] === [2023-11-19 07:38:10,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:10,486 INFO L85 PathProgramCache]: Analyzing trace with hash 37042755, now seen corresponding path program 1 times [2023-11-19 07:38:10,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:10,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216850817] [2023-11-19 07:38:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216850817] [2023-11-19 07:38:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216850817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974285080] [2023-11-19 07:38:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:10,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-19 07:38:10,698 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) [2023-11-19 07:38:10,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:10,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-19 07:38:10,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:11,045 INFO L124 PetriNetUnfolderBase]: 1697/2668 cut-off events. [2023-11-19 07:38:11,046 INFO L125 PetriNetUnfolderBase]: For 378/541 co-relation queries the response was YES. [2023-11-19 07:38:11,052 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. [2023-11-19 07:38:11,071 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-11-19 07:38:11,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 250 flow [2023-11-19 07:38:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-11-19 07:38:11,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387387387387386 [2023-11-19 07:38:11,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-11-19 07:38:11,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-11-19 07:38:11,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:11,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-11-19 07:38:11,081 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) [2023-11-19 07:38:11,087 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) [2023-11-19 07:38:11,089 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) [2023-11-19 07:38:11,090 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 174 flow. Second operand 3 states and 1052 transitions. [2023-11-19 07:38:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 250 flow [2023-11-19 07:38:11,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:11,093 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 168 flow [2023-11-19 07:38:11,093 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} [2023-11-19 07:38:11,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-19 07:38:11,095 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 168 flow [2023-11-19 07:38:11,096 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) [2023-11-19 07:38:11,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:11,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:38:11,097 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)] === [2023-11-19 07:38:11,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1148441210, now seen corresponding path program 1 times [2023-11-19 07:38:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616671725] [2023-11-19 07:38:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:11,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:11,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616671725] [2023-11-19 07:38:11,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616671725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140885238] [2023-11-19 07:38:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:11,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:11,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:11,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 740 [2023-11-19 07:38:11,311 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) [2023-11-19 07:38:11,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:11,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 740 [2023-11-19 07:38:11,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:11,804 INFO L124 PetriNetUnfolderBase]: 2263/3568 cut-off events. [2023-11-19 07:38:11,805 INFO L125 PetriNetUnfolderBase]: For 398/559 co-relation queries the response was YES. [2023-11-19 07:38:11,812 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. [2023-11-19 07:38:11,835 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 68 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-19 07:38:11,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 412 flow [2023-11-19 07:38:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2023-11-19 07:38:11,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2023-11-19 07:38:11,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2023-11-19 07:38:11,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2023-11-19 07:38:11,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:11,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2023-11-19 07:38:11,845 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) [2023-11-19 07:38:11,852 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) [2023-11-19 07:38:11,854 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) [2023-11-19 07:38:11,855 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 168 flow. Second operand 3 states and 1075 transitions. [2023-11-19 07:38:11,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 412 flow [2023-11-19 07:38:11,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:11,859 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 215 flow [2023-11-19 07:38:11,859 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} [2023-11-19 07:38:11,860 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-19 07:38:11,860 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 215 flow [2023-11-19 07:38:11,862 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) [2023-11-19 07:38:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:11,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:38:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:38:11,862 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)] === [2023-11-19 07:38:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1148441211, now seen corresponding path program 1 times [2023-11-19 07:38:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135222424] [2023-11-19 07:38:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135222424] [2023-11-19 07:38:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135222424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:12,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:12,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643499706] [2023-11-19 07:38:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:12,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 740 [2023-11-19 07:38:12,156 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) [2023-11-19 07:38:12,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:12,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 740 [2023-11-19 07:38:12,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:12,537 INFO L124 PetriNetUnfolderBase]: 1822/2895 cut-off events. [2023-11-19 07:38:12,537 INFO L125 PetriNetUnfolderBase]: For 501/664 co-relation queries the response was YES. [2023-11-19 07:38:12,543 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. [2023-11-19 07:38:12,561 INFO L140 encePairwiseOnDemand]: 738/740 looper letters, 41 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-19 07:38:12,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 297 flow [2023-11-19 07:38:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2023-11-19 07:38:12,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47612612612612615 [2023-11-19 07:38:12,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2023-11-19 07:38:12,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2023-11-19 07:38:12,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:12,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2023-11-19 07:38:12,571 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) [2023-11-19 07:38:12,576 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) [2023-11-19 07:38:12,578 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) [2023-11-19 07:38:12,578 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 215 flow. Second operand 3 states and 1057 transitions. [2023-11-19 07:38:12,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 297 flow [2023-11-19 07:38:12,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:12,582 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 201 flow [2023-11-19 07:38:12,582 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} [2023-11-19 07:38:12,583 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-19 07:38:12,584 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 201 flow [2023-11-19 07:38:12,584 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) [2023-11-19 07:38:12,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:12,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:38:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:38:12,587 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)] === [2023-11-19 07:38:12,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1238364891, now seen corresponding path program 1 times [2023-11-19 07:38:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178907626] [2023-11-19 07:38:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178907626] [2023-11-19 07:38:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178907626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304549064] [2023-11-19 07:38:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:12,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-19 07:38:12,750 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) [2023-11-19 07:38:12,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:12,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-19 07:38:12,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:13,290 INFO L124 PetriNetUnfolderBase]: 2102/3369 cut-off events. [2023-11-19 07:38:13,290 INFO L125 PetriNetUnfolderBase]: For 535/740 co-relation queries the response was YES. [2023-11-19 07:38:13,300 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. [2023-11-19 07:38:13,315 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 70 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2023-11-19 07:38:13,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 92 transitions, 454 flow [2023-11-19 07:38:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2023-11-19 07:38:13,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654054054054054 [2023-11-19 07:38:13,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2023-11-19 07:38:13,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2023-11-19 07:38:13,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:13,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2023-11-19 07:38:13,329 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) [2023-11-19 07:38:13,338 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) [2023-11-19 07:38:13,340 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) [2023-11-19 07:38:13,340 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 201 flow. Second operand 5 states and 1722 transitions. [2023-11-19 07:38:13,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 92 transitions, 454 flow [2023-11-19 07:38:13,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:13,347 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 257 flow [2023-11-19 07:38:13,347 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} [2023-11-19 07:38:13,352 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-19 07:38:13,352 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 257 flow [2023-11-19 07:38:13,353 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) [2023-11-19 07:38:13,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:13,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:13,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:38:13,357 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)] === [2023-11-19 07:38:13,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -155713341, now seen corresponding path program 1 times [2023-11-19 07:38:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606168103] [2023-11-19 07:38:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606168103] [2023-11-19 07:38:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606168103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:13,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625837816] [2023-11-19 07:38:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:13,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:13,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 740 [2023-11-19 07:38:13,459 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) [2023-11-19 07:38:13,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:13,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 740 [2023-11-19 07:38:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:13,767 INFO L124 PetriNetUnfolderBase]: 1112/1833 cut-off events. [2023-11-19 07:38:13,767 INFO L125 PetriNetUnfolderBase]: For 993/993 co-relation queries the response was YES. [2023-11-19 07:38:13,772 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. [2023-11-19 07:38:13,785 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 71 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-19 07:38:13,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 508 flow [2023-11-19 07:38:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2023-11-19 07:38:13,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806306306306306 [2023-11-19 07:38:13,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2023-11-19 07:38:13,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2023-11-19 07:38:13,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:13,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2023-11-19 07:38:13,794 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) [2023-11-19 07:38:13,800 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) [2023-11-19 07:38:13,810 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) [2023-11-19 07:38:13,810 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 257 flow. Second operand 3 states and 1067 transitions. [2023-11-19 07:38:13,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 508 flow [2023-11-19 07:38:13,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 504 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:13,818 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 235 flow [2023-11-19 07:38:13,818 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} [2023-11-19 07:38:13,819 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-11-19 07:38:13,819 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 235 flow [2023-11-19 07:38:13,819 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) [2023-11-19 07:38:13,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:13,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:13,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:13,820 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)] === [2023-11-19 07:38:13,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash 371870217, now seen corresponding path program 1 times [2023-11-19 07:38:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288228011] [2023-11-19 07:38:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288228011] [2023-11-19 07:38:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288228011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:13,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459484508] [2023-11-19 07:38:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:13,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-19 07:38:13,945 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) [2023-11-19 07:38:13,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:13,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-19 07:38:13,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:14,294 INFO L124 PetriNetUnfolderBase]: 1216/1967 cut-off events. [2023-11-19 07:38:14,294 INFO L125 PetriNetUnfolderBase]: For 1325/1325 co-relation queries the response was YES. [2023-11-19 07:38:14,301 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. [2023-11-19 07:38:14,312 INFO L140 encePairwiseOnDemand]: 732/740 looper letters, 59 selfloop transitions, 10 changer transitions 1/83 dead transitions. [2023-11-19 07:38:14,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 482 flow [2023-11-19 07:38:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-11-19 07:38:14,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47927927927927927 [2023-11-19 07:38:14,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-11-19 07:38:14,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-11-19 07:38:14,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:14,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-11-19 07:38:14,322 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) [2023-11-19 07:38:14,327 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) [2023-11-19 07:38:14,329 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) [2023-11-19 07:38:14,329 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 235 flow. Second operand 3 states and 1064 transitions. [2023-11-19 07:38:14,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 482 flow [2023-11-19 07:38:14,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:14,338 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 337 flow [2023-11-19 07:38:14,339 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} [2023-11-19 07:38:14,340 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-11-19 07:38:14,340 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 337 flow [2023-11-19 07:38:14,341 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) [2023-11-19 07:38:14,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:14,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:14,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:38:14,342 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)] === [2023-11-19 07:38:14,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1342886672, now seen corresponding path program 1 times [2023-11-19 07:38:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856411869] [2023-11-19 07:38:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856411869] [2023-11-19 07:38:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856411869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:14,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:14,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533661725] [2023-11-19 07:38:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:14,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:14,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 740 [2023-11-19 07:38:14,462 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) [2023-11-19 07:38:14,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:14,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 740 [2023-11-19 07:38:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:14,767 INFO L124 PetriNetUnfolderBase]: 997/1735 cut-off events. [2023-11-19 07:38:14,768 INFO L125 PetriNetUnfolderBase]: For 2215/2215 co-relation queries the response was YES. [2023-11-19 07:38:14,774 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. [2023-11-19 07:38:14,783 INFO L140 encePairwiseOnDemand]: 733/740 looper letters, 52 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2023-11-19 07:38:14,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 497 flow [2023-11-19 07:38:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-19 07:38:14,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657657657657658 [2023-11-19 07:38:14,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-19 07:38:14,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-19 07:38:14,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:14,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-19 07:38:14,792 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) [2023-11-19 07:38:14,796 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) [2023-11-19 07:38:14,797 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) [2023-11-19 07:38:14,798 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 337 flow. Second operand 3 states and 1034 transitions. [2023-11-19 07:38:14,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 497 flow [2023-11-19 07:38:14,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 471 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:14,810 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 349 flow [2023-11-19 07:38:14,810 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} [2023-11-19 07:38:14,811 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-11-19 07:38:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 349 flow [2023-11-19 07:38:14,811 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) [2023-11-19 07:38:14,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:14,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:38:14,812 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)] === [2023-11-19 07:38:14,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash 885044466, now seen corresponding path program 1 times [2023-11-19 07:38:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31763718] [2023-11-19 07:38:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31763718] [2023-11-19 07:38:14,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31763718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:14,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:14,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:14,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533490150] [2023-11-19 07:38:14,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:14,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 740 [2023-11-19 07:38:14,930 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) [2023-11-19 07:38:14,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:14,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 740 [2023-11-19 07:38:14,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:15,105 INFO L124 PetriNetUnfolderBase]: 466/830 cut-off events. [2023-11-19 07:38:15,105 INFO L125 PetriNetUnfolderBase]: For 1103/1103 co-relation queries the response was YES. [2023-11-19 07:38:15,108 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. [2023-11-19 07:38:15,113 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 47 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-19 07:38:15,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 434 flow [2023-11-19 07:38:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-11-19 07:38:15,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47927927927927927 [2023-11-19 07:38:15,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-11-19 07:38:15,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-11-19 07:38:15,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:15,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-11-19 07:38:15,122 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) [2023-11-19 07:38:15,127 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) [2023-11-19 07:38:15,128 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) [2023-11-19 07:38:15,128 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 349 flow. Second operand 3 states and 1064 transitions. [2023-11-19 07:38:15,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 434 flow [2023-11-19 07:38:15,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 370 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-19 07:38:15,136 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 250 flow [2023-11-19 07:38:15,136 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} [2023-11-19 07:38:15,137 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-19 07:38:15,138 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 250 flow [2023-11-19 07:38:15,138 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) [2023-11-19 07:38:15,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:15,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:38:15,139 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)] === [2023-11-19 07:38:15,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 35747846, now seen corresponding path program 1 times [2023-11-19 07:38:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762219049] [2023-11-19 07:38:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:15,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762219049] [2023-11-19 07:38:15,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762219049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:15,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:15,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:15,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173447625] [2023-11-19 07:38:15,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:15,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:15,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-19 07:38:15,378 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) [2023-11-19 07:38:15,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:15,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-19 07:38:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:15,580 INFO L124 PetriNetUnfolderBase]: 469/861 cut-off events. [2023-11-19 07:38:15,580 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2023-11-19 07:38:15,584 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. [2023-11-19 07:38:15,588 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 63 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-19 07:38:15,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 525 flow [2023-11-19 07:38:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-11-19 07:38:15,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-11-19 07:38:15,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-11-19 07:38:15,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-11-19 07:38:15,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:15,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-11-19 07:38:15,598 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) [2023-11-19 07:38:15,602 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) [2023-11-19 07:38:15,604 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) [2023-11-19 07:38:15,604 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 250 flow. Second operand 3 states and 1068 transitions. [2023-11-19 07:38:15,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 525 flow [2023-11-19 07:38:15,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:15,609 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 251 flow [2023-11-19 07:38:15,610 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} [2023-11-19 07:38:15,610 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-19 07:38:15,611 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 251 flow [2023-11-19 07:38:15,611 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) [2023-11-19 07:38:15,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:15,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:15,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:38:15,612 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)] === [2023-11-19 07:38:15,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash -148938007, now seen corresponding path program 1 times [2023-11-19 07:38:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:15,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150615199] [2023-11-19 07:38:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:15,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:15,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150615199] [2023-11-19 07:38:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150615199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:15,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:15,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376650851] [2023-11-19 07:38:15,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:15,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:15,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-19 07:38:15,783 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) [2023-11-19 07:38:15,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:15,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-19 07:38:15,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:16,041 INFO L124 PetriNetUnfolderBase]: 522/1027 cut-off events. [2023-11-19 07:38:16,041 INFO L125 PetriNetUnfolderBase]: For 753/753 co-relation queries the response was YES. [2023-11-19 07:38:16,045 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. [2023-11-19 07:38:16,050 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 61 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2023-11-19 07:38:16,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 561 flow [2023-11-19 07:38:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-11-19 07:38:16,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47702702702702704 [2023-11-19 07:38:16,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-11-19 07:38:16,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-11-19 07:38:16,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:16,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-11-19 07:38:16,062 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) [2023-11-19 07:38:16,068 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) [2023-11-19 07:38:16,069 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) [2023-11-19 07:38:16,069 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 251 flow. Second operand 3 states and 1059 transitions. [2023-11-19 07:38:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 561 flow [2023-11-19 07:38:16,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:16,074 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 379 flow [2023-11-19 07:38:16,074 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} [2023-11-19 07:38:16,075 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-19 07:38:16,076 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 379 flow [2023-11-19 07:38:16,076 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) [2023-11-19 07:38:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:16,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:16,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:38:16,077 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)] === [2023-11-19 07:38:16,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash -322093941, now seen corresponding path program 1 times [2023-11-19 07:38:16,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:16,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700496899] [2023-11-19 07:38:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700496899] [2023-11-19 07:38:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700496899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035462707] [2023-11-19 07:38:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:16,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-19 07:38:16,266 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) [2023-11-19 07:38:16,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:16,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-19 07:38:16,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:16,451 INFO L124 PetriNetUnfolderBase]: 519/962 cut-off events. [2023-11-19 07:38:16,451 INFO L125 PetriNetUnfolderBase]: For 1137/1139 co-relation queries the response was YES. [2023-11-19 07:38:16,455 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. [2023-11-19 07:38:16,460 INFO L140 encePairwiseOnDemand]: 738/740 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-19 07:38:16,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 471 flow [2023-11-19 07:38:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-19 07:38:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657657657657658 [2023-11-19 07:38:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-19 07:38:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-19 07:38:16,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:16,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-19 07:38:16,471 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) [2023-11-19 07:38:16,476 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) [2023-11-19 07:38:16,478 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) [2023-11-19 07:38:16,478 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 379 flow. Second operand 3 states and 1034 transitions. [2023-11-19 07:38:16,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 471 flow [2023-11-19 07:38:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:16,483 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 357 flow [2023-11-19 07:38:16,484 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} [2023-11-19 07:38:16,485 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-19 07:38:16,485 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 357 flow [2023-11-19 07:38:16,486 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) [2023-11-19 07:38:16,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:16,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:16,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:38:16,487 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)] === [2023-11-19 07:38:16,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -5530985, now seen corresponding path program 1 times [2023-11-19 07:38:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037956352] [2023-11-19 07:38:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:16,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037956352] [2023-11-19 07:38:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037956352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:16,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:16,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:16,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32082166] [2023-11-19 07:38:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:16,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-19 07:38:16,851 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) [2023-11-19 07:38:16,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:16,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-19 07:38:16,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:17,087 INFO L124 PetriNetUnfolderBase]: 518/979 cut-off events. [2023-11-19 07:38:17,087 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-11-19 07:38:17,090 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. [2023-11-19 07:38:17,095 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 66 selfloop transitions, 4 changer transitions 16/95 dead transitions. [2023-11-19 07:38:17,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 672 flow [2023-11-19 07:38:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1390 transitions. [2023-11-19 07:38:17,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2023-11-19 07:38:17,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1390 transitions. [2023-11-19 07:38:17,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1390 transitions. [2023-11-19 07:38:17,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:17,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1390 transitions. [2023-11-19 07:38:17,106 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) [2023-11-19 07:38:17,112 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) [2023-11-19 07:38:17,113 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) [2023-11-19 07:38:17,113 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 357 flow. Second operand 4 states and 1390 transitions. [2023-11-19 07:38:17,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 672 flow [2023-11-19 07:38:17,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:17,118 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 372 flow [2023-11-19 07:38:17,118 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} [2023-11-19 07:38:17,119 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-11-19 07:38:17,119 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 372 flow [2023-11-19 07:38:17,119 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) [2023-11-19 07:38:17,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:17,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:17,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:38:17,120 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)] === [2023-11-19 07:38:17,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1357640395, now seen corresponding path program 1 times [2023-11-19 07:38:17,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:17,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655573115] [2023-11-19 07:38:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:17,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:17,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655573115] [2023-11-19 07:38:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655573115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:17,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:17,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809566549] [2023-11-19 07:38:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:17,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 740 [2023-11-19 07:38:17,287 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) [2023-11-19 07:38:17,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:17,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 740 [2023-11-19 07:38:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:17,488 INFO L124 PetriNetUnfolderBase]: 517/988 cut-off events. [2023-11-19 07:38:17,488 INFO L125 PetriNetUnfolderBase]: For 1177/1181 co-relation queries the response was YES. [2023-11-19 07:38:17,492 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. [2023-11-19 07:38:17,496 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-19 07:38:17,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 500 flow [2023-11-19 07:38:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-11-19 07:38:17,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2023-11-19 07:38:17,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-11-19 07:38:17,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-11-19 07:38:17,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:17,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-11-19 07:38:17,505 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) [2023-11-19 07:38:17,509 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) [2023-11-19 07:38:17,510 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) [2023-11-19 07:38:17,510 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 372 flow. Second operand 3 states and 1040 transitions. [2023-11-19 07:38:17,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 500 flow [2023-11-19 07:38:17,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 487 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:38:17,516 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 389 flow [2023-11-19 07:38:17,517 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} [2023-11-19 07:38:17,518 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-19 07:38:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 389 flow [2023-11-19 07:38:17,518 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) [2023-11-19 07:38:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:17,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:38:17,519 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)] === [2023-11-19 07:38:17,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1357640365, now seen corresponding path program 1 times [2023-11-19 07:38:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266955180] [2023-11-19 07:38:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:17,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266955180] [2023-11-19 07:38:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266955180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:17,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:17,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536702748] [2023-11-19 07:38:17,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:17,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 740 [2023-11-19 07:38:17,742 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) [2023-11-19 07:38:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 740 [2023-11-19 07:38:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:17,948 INFO L124 PetriNetUnfolderBase]: 517/974 cut-off events. [2023-11-19 07:38:17,948 INFO L125 PetriNetUnfolderBase]: For 1342/1346 co-relation queries the response was YES. [2023-11-19 07:38:17,952 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. [2023-11-19 07:38:17,956 INFO L140 encePairwiseOnDemand]: 737/740 looper letters, 38 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-11-19 07:38:17,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 517 flow [2023-11-19 07:38:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-11-19 07:38:17,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387387387387386 [2023-11-19 07:38:17,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-11-19 07:38:17,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-11-19 07:38:17,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:17,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-11-19 07:38:17,965 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) [2023-11-19 07:38:17,969 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) [2023-11-19 07:38:17,970 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) [2023-11-19 07:38:17,970 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 389 flow. Second operand 3 states and 1052 transitions. [2023-11-19 07:38:17,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 517 flow [2023-11-19 07:38:17,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 485 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:17,975 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 387 flow [2023-11-19 07:38:17,975 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} [2023-11-19 07:38:17,976 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-19 07:38:17,976 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 387 flow [2023-11-19 07:38:17,977 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) [2023-11-19 07:38:17,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:17,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:38:17,977 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)] === [2023-11-19 07:38:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -977454636, now seen corresponding path program 1 times [2023-11-19 07:38:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743117] [2023-11-19 07:38:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743117] [2023-11-19 07:38:18,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:18,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:18,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905922287] [2023-11-19 07:38:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:18,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 740 [2023-11-19 07:38:18,317 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) [2023-11-19 07:38:18,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:18,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 740 [2023-11-19 07:38:18,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:18,517 INFO L124 PetriNetUnfolderBase]: 623/1062 cut-off events. [2023-11-19 07:38:18,517 INFO L125 PetriNetUnfolderBase]: For 1342/1342 co-relation queries the response was YES. [2023-11-19 07:38:18,521 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. [2023-11-19 07:38:18,526 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 35 selfloop transitions, 19 changer transitions 0/60 dead transitions. [2023-11-19 07:38:18,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 507 flow [2023-11-19 07:38:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1344 transitions. [2023-11-19 07:38:18,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-11-19 07:38:18,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1344 transitions. [2023-11-19 07:38:18,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1344 transitions. [2023-11-19 07:38:18,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:18,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1344 transitions. [2023-11-19 07:38:18,537 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) [2023-11-19 07:38:18,543 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) [2023-11-19 07:38:18,544 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) [2023-11-19 07:38:18,545 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 387 flow. Second operand 4 states and 1344 transitions. [2023-11-19 07:38:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 507 flow [2023-11-19 07:38:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 465 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:18,550 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 373 flow [2023-11-19 07:38:18,550 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} [2023-11-19 07:38:18,551 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-19 07:38:18,551 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 373 flow [2023-11-19 07:38:18,552 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) [2023-11-19 07:38:18,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:18,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:18,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:38:18,552 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)] === [2023-11-19 07:38:18,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1303559043, now seen corresponding path program 1 times [2023-11-19 07:38:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242949329] [2023-11-19 07:38:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:18,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242949329] [2023-11-19 07:38:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242949329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:18,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717032407] [2023-11-19 07:38:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:18,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 740 [2023-11-19 07:38:18,960 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) [2023-11-19 07:38:18,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:18,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 740 [2023-11-19 07:38:18,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:19,169 INFO L124 PetriNetUnfolderBase]: 752/1227 cut-off events. [2023-11-19 07:38:19,169 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2023-11-19 07:38:19,173 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. [2023-11-19 07:38:19,179 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 37 selfloop transitions, 18 changer transitions 2/61 dead transitions. [2023-11-19 07:38:19,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 513 flow [2023-11-19 07:38:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1361 transitions. [2023-11-19 07:38:19,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597972972972973 [2023-11-19 07:38:19,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1361 transitions. [2023-11-19 07:38:19,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1361 transitions. [2023-11-19 07:38:19,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:19,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1361 transitions. [2023-11-19 07:38:19,191 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) [2023-11-19 07:38:19,198 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) [2023-11-19 07:38:19,199 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) [2023-11-19 07:38:19,200 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 373 flow. Second operand 4 states and 1361 transitions. [2023-11-19 07:38:19,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 513 flow [2023-11-19 07:38:19,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 475 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:38:19,205 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 353 flow [2023-11-19 07:38:19,205 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} [2023-11-19 07:38:19,206 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-19 07:38:19,206 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 353 flow [2023-11-19 07:38:19,207 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) [2023-11-19 07:38:19,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:19,207 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] [2023-11-19 07:38:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:38:19,207 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)] === [2023-11-19 07:38:19,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2074659744, now seen corresponding path program 1 times [2023-11-19 07:38:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208099781] [2023-11-19 07:38:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:38:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208099781] [2023-11-19 07:38:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208099781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:19,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230952617] [2023-11-19 07:38:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:19,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 740 [2023-11-19 07:38:19,676 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) [2023-11-19 07:38:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 740 [2023-11-19 07:38:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:20,014 INFO L124 PetriNetUnfolderBase]: 603/1105 cut-off events. [2023-11-19 07:38:20,014 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2023-11-19 07:38:20,019 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. [2023-11-19 07:38:20,026 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 62 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2023-11-19 07:38:20,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 778 flow [2023-11-19 07:38:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1379 transitions. [2023-11-19 07:38:20,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46587837837837837 [2023-11-19 07:38:20,033 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1379 transitions. [2023-11-19 07:38:20,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1379 transitions. [2023-11-19 07:38:20,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:20,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1379 transitions. [2023-11-19 07:38:20,040 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) [2023-11-19 07:38:20,046 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) [2023-11-19 07:38:20,048 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) [2023-11-19 07:38:20,048 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 353 flow. Second operand 4 states and 1379 transitions. [2023-11-19 07:38:20,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 778 flow [2023-11-19 07:38:20,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 90 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:38:20,054 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 568 flow [2023-11-19 07:38:20,055 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} [2023-11-19 07:38:20,055 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-19 07:38:20,056 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 568 flow [2023-11-19 07:38:20,056 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) [2023-11-19 07:38:20,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:20,057 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] [2023-11-19 07:38:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:38:20,057 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)] === [2023-11-19 07:38:20,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -749925838, now seen corresponding path program 2 times [2023-11-19 07:38:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373829816] [2023-11-19 07:38:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373829816] [2023-11-19 07:38:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373829816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:20,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027333528] [2023-11-19 07:38:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:20,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:20,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:20,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 740 [2023-11-19 07:38:20,545 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) [2023-11-19 07:38:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 740 [2023-11-19 07:38:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:20,845 INFO L124 PetriNetUnfolderBase]: 603/1107 cut-off events. [2023-11-19 07:38:20,846 INFO L125 PetriNetUnfolderBase]: For 2074/2074 co-relation queries the response was YES. [2023-11-19 07:38:20,850 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. [2023-11-19 07:38:20,856 INFO L140 encePairwiseOnDemand]: 735/740 looper letters, 56 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2023-11-19 07:38:20,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 883 flow [2023-11-19 07:38:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1703 transitions. [2023-11-19 07:38:20,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602702702702703 [2023-11-19 07:38:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1703 transitions. [2023-11-19 07:38:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1703 transitions. [2023-11-19 07:38:20,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:20,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1703 transitions. [2023-11-19 07:38:20,870 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) [2023-11-19 07:38:20,876 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) [2023-11-19 07:38:20,877 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) [2023-11-19 07:38:20,878 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 568 flow. Second operand 5 states and 1703 transitions. [2023-11-19 07:38:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 883 flow [2023-11-19 07:38:20,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 845 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:20,886 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 640 flow [2023-11-19 07:38:20,886 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} [2023-11-19 07:38:20,887 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-19 07:38:20,887 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 640 flow [2023-11-19 07:38:20,888 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) [2023-11-19 07:38:20,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:20,888 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] [2023-11-19 07:38:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:38:20,888 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)] === [2023-11-19 07:38:20,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2091536956, now seen corresponding path program 1 times [2023-11-19 07:38:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52015583] [2023-11-19 07:38:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:20,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52015583] [2023-11-19 07:38:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52015583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779434364] [2023-11-19 07:38:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:21,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:21,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:21,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:38:21,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:21,637 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 07:38:21,638 INFO L378 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 [2023-11-19 07:38:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:21,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:22,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779434364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:22,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:22,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2023-11-19 07:38:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930020199] [2023-11-19 07:38:22,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:22,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:38:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:38:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:38:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 740 [2023-11-19 07:38:24,359 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) [2023-11-19 07:38:24,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:24,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 740 [2023-11-19 07:38:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:24,989 INFO L124 PetriNetUnfolderBase]: 689/1246 cut-off events. [2023-11-19 07:38:24,989 INFO L125 PetriNetUnfolderBase]: For 2690/2692 co-relation queries the response was YES. [2023-11-19 07:38:24,994 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. [2023-11-19 07:38:25,000 INFO L140 encePairwiseOnDemand]: 734/740 looper letters, 66 selfloop transitions, 2 changer transitions 59/131 dead transitions. [2023-11-19 07:38:25,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1203 flow [2023-11-19 07:38:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2046 transitions. [2023-11-19 07:38:25,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608108108108108 [2023-11-19 07:38:25,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2046 transitions. [2023-11-19 07:38:25,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2046 transitions. [2023-11-19 07:38:25,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:25,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2046 transitions. [2023-11-19 07:38:25,015 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) [2023-11-19 07:38:25,022 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) [2023-11-19 07:38:25,023 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) [2023-11-19 07:38:25,024 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 640 flow. Second operand 6 states and 2046 transitions. [2023-11-19 07:38:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1203 flow [2023-11-19 07:38:25,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 131 transitions, 1169 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:25,034 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 566 flow [2023-11-19 07:38:25,034 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} [2023-11-19 07:38:25,035 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-11-19 07:38:25,035 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 566 flow [2023-11-19 07:38:25,036 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) [2023-11-19 07:38:25,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:25,037 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] [2023-11-19 07:38:25,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:25,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:25,252 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)] === [2023-11-19 07:38:25,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 312618912, now seen corresponding path program 2 times [2023-11-19 07:38:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:25,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138599833] [2023-11-19 07:38:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:25,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138599833] [2023-11-19 07:38:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138599833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432855415] [2023-11-19 07:38:25,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:38:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:25,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:25,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:25,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:38:25,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:25,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:38:25,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:25,899 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 07:38:25,899 INFO L378 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 [2023-11-19 07:38:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:26,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432855415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:26,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:26,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-11-19 07:38:26,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303080573] [2023-11-19 07:38:26,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:26,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:38:26,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:26,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:38:26,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:38:28,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 740 [2023-11-19 07:38:28,842 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) [2023-11-19 07:38:28,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:28,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 740 [2023-11-19 07:38:28,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:29,649 INFO L124 PetriNetUnfolderBase]: 530/948 cut-off events. [2023-11-19 07:38:29,649 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2023-11-19 07:38:29,654 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. [2023-11-19 07:38:29,655 INFO L140 encePairwiseOnDemand]: 733/740 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-11-19 07:38:29,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 945 flow [2023-11-19 07:38:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:38:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:38:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3001 transitions. [2023-11-19 07:38:29,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506006006006006 [2023-11-19 07:38:29,667 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3001 transitions. [2023-11-19 07:38:29,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3001 transitions. [2023-11-19 07:38:29,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:29,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3001 transitions. [2023-11-19 07:38:29,677 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) [2023-11-19 07:38:29,686 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) [2023-11-19 07:38:29,689 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) [2023-11-19 07:38:29,689 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 566 flow. Second operand 9 states and 3001 transitions. [2023-11-19 07:38:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 945 flow [2023-11-19 07:38:29,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 905 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-19 07:38:29,697 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-11-19 07:38:29,698 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} [2023-11-19 07:38:29,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-19 07:38:29,698 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-11-19 07:38:29,700 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) [2023-11-19 07:38:29,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2023-11-19 07:38:29,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2023-11-19 07:38:29,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-11-19 07:38:29,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-11-19 07:38:29,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2023-11-19 07:38:29,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2023-11-19 07:38:29,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2023-11-19 07:38:29,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2023-11-19 07:38:29,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-11-19 07:38:29,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-11-19 07:38:29,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-11-19 07:38:29,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2023-11-19 07:38:29,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-11-19 07:38:29,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-11-19 07:38:29,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2023-11-19 07:38:29,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2023-11-19 07:38:29,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2023-11-19 07:38:29,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2023-11-19 07:38:29,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-11-19 07:38:29,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-11-19 07:38:29,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-11-19 07:38:29,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2023-11-19 07:38:29,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-11-19 07:38:29,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-11-19 07:38:29,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2023-11-19 07:38:29,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2023-11-19 07:38:29,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:29,928 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] [2023-11-19 07:38:29,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:38:29,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:38:29,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:38:29 BasicIcfg [2023-11-19 07:38:29,939 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:38:29,940 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:38:29,940 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:38:29,940 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:38:29,941 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:57" (3/4) ... [2023-11-19 07:38:29,942 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:38:29,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-11-19 07:38:29,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-11-19 07:38:29,955 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 07:38:29,955 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 07:38:29,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:38:29,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:38:30,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:38:30,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:38:30,065 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:38:30,066 INFO L158 Benchmark]: Toolchain (without parser) took 35340.19ms. Allocated memory was 130.0MB in the beginning and 494.9MB in the end (delta: 364.9MB). Free memory was 86.0MB in the beginning and 183.0MB in the end (delta: -97.0MB). Peak memory consumption was 268.7MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,067 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:30,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1366.39ms. Allocated memory is still 130.0MB. Free memory was 86.0MB in the beginning and 61.5MB in the end (delta: 24.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.21ms. Allocated memory is still 130.0MB. Free memory was 61.5MB in the beginning and 58.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,068 INFO L158 Benchmark]: Boogie Preprocessor took 99.10ms. Allocated memory is still 130.0MB. Free memory was 58.0MB in the beginning and 54.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,068 INFO L158 Benchmark]: RCFGBuilder took 880.43ms. Allocated memory is still 130.0MB. Free memory was 54.6MB in the beginning and 75.0MB in the end (delta: -20.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,069 INFO L158 Benchmark]: TraceAbstraction took 32730.89ms. Allocated memory was 130.0MB in the beginning and 494.9MB in the end (delta: 364.9MB). Free memory was 74.2MB in the beginning and 188.2MB in the end (delta: -114.0MB). Peak memory consumption was 250.6MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,069 INFO L158 Benchmark]: Witness Printer took 124.97ms. Allocated memory is still 494.9MB. Free memory was 188.2MB in the beginning and 183.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:38:30,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1366.39ms. Allocated memory is still 130.0MB. Free memory was 86.0MB in the beginning and 61.5MB in the end (delta: 24.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.21ms. Allocated memory is still 130.0MB. Free memory was 61.5MB in the beginning and 58.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.10ms. Allocated memory is still 130.0MB. Free memory was 58.0MB in the beginning and 54.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 880.43ms. Allocated memory is still 130.0MB. Free memory was 54.6MB in the beginning and 75.0MB in the end (delta: -20.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 32730.89ms. Allocated memory was 130.0MB in the beginning and 494.9MB in the end (delta: 364.9MB). Free memory was 74.2MB in the beginning and 188.2MB in the end (delta: -114.0MB). Peak memory consumption was 250.6MB. Max. memory is 16.1GB. * Witness Printer took 124.97ms. Allocated memory is still 494.9MB. Free memory was 188.2MB in the beginning and 183.0MB in the end (delta: 5.2MB). 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: 9.7s, 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: 32.5s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2887 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1743 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 7.3s 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, 5.2s 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! [2023-11-19 07:38:30,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70955d0a-da07-44ab-9abc-2e876eb547d8/bin/uautomizer-verify-uCwYo4JHxu/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