./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-index-bitmask-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/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_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-index-bitmask-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9dc253a71095a3ed3b49fc56a3d17da307efb7fa91be8525b1f50977899b5b3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:19,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:19,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:04:19,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:19,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:19,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:19,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:19,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:19,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:19,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:19,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:19,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:19,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:19,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:19,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:19,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:19,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:19,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:19,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:19,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:19,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:19,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:19,496 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:04:19,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:19,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:19,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:19,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:19,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:19,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:19,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:19,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:19,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:19,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:19,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:19,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:19,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:19,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:19,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:19,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:19,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:19,508 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:19,508 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_1f162eee-4a71-4192-a1dc-250516dd41de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc253a71095a3ed3b49fc56a3d17da307efb7fa91be8525b1f50977899b5b3d [2023-11-19 08:04:19,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:19,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:19,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:19,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:19,897 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:19,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/per-thread-index-bitmask-race.i [2023-11-19 08:04:23,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:23,346 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:23,347 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/sv-benchmarks/c/pthread-race-challenges/per-thread-index-bitmask-race.i [2023-11-19 08:04:23,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/data/3055ea51c/09050e7db7de4eb296094ce1f7a47ab7/FLAG9e56ee37e [2023-11-19 08:04:23,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/data/3055ea51c/09050e7db7de4eb296094ce1f7a47ab7 [2023-11-19 08:04:23,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:23,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:23,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:23,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:23,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:23,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e28aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23, skipping insertion in model container [2023-11-19 08:04:23,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:23,652 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:24,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:24,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:24,120 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:24,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:24,236 WARN L675 CHandler]: The function ffs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:24,237 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:24,246 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:24,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24 WrapperNode [2023-11-19 08:04:24,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:24,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:24,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:24,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:24,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,349 INFO L138 Inliner]: procedures = 278, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2023-11-19 08:04:24,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:24,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:24,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:24,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:24,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:24,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:24,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:24,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:24,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (1/1) ... [2023-11-19 08:04:24,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:24,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:04:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:04:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:04:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:04:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2023-11-19 08:04:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 08:04:24,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 08:04:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:24,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:24,503 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 08:04:24,658 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:24,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:25,007 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:25,018 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:25,024 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:04:25,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:25 BoogieIcfgContainer [2023-11-19 08:04:25,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:25,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:25,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:25,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:25,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:23" (1/3) ... [2023-11-19 08:04:25,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51be7a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:25, skipping insertion in model container [2023-11-19 08:04:25,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:24" (2/3) ... [2023-11-19 08:04:25,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51be7a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:25, skipping insertion in model container [2023-11-19 08:04:25,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:25" (3/3) ... [2023-11-19 08:04:25,044 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-index-bitmask-race.i [2023-11-19 08:04:25,053 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:04:25,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:25,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 08:04:25,063 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:04:25,184 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:04:25,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,399 INFO L124 PetriNetUnfolderBase]: 16/268 cut-off events. [2023-11-19 08:04:25,399 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:04:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 268 events. 16/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 602 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-11-19 08:04:25,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:25,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 373 flow [2023-11-19 08:04:25,502 INFO L124 PetriNetUnfolderBase]: 16/268 cut-off events. [2023-11-19 08:04:25,502 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:04:25,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 268 events. 16/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 602 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-11-19 08:04:25,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 8280 [2023-11-19 08:04:28,873 INFO L134 LiptonReduction]: Checked pairs total: 46644 [2023-11-19 08:04:28,873 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-19 08:04:28,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:28,914 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5abb688f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:28,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 08:04:28,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:28,918 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:04:28,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:28,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:28,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:04:28,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:28,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash 606, now seen corresponding path program 1 times [2023-11-19 08:04:28,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:28,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769350608] [2023-11-19 08:04:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:29,092 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 08:04:29,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:29,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769350608] [2023-11-19 08:04:29,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769350608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:29,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:29,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:04:29,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690681350] [2023-11-19 08:04:29,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:29,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:29,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 297 [2023-11-19 08:04:29,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 175 flow. Second operand has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 08:04:29,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:29,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 297 [2023-11-19 08:04:29,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:29,352 INFO L124 PetriNetUnfolderBase]: 162/594 cut-off events. [2023-11-19 08:04:29,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:29,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 594 events. 162/594 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3356 event pairs, 120 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 835. Up to 316 conditions per place. [2023-11-19 08:04:29,360 INFO L140 encePairwiseOnDemand]: 296/297 looper letters, 29 selfloop transitions, 0 changer transitions 0/83 dead transitions. [2023-11-19 08:04:29,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 231 flow [2023-11-19 08:04:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:04:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2023-11-19 08:04:29,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2023-11-19 08:04:29,379 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2023-11-19 08:04:29,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2023-11-19 08:04:29,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:29,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2023-11-19 08:04:29,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 08:04:29,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 08:04:29,398 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 08:04:29,400 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 175 flow. Second operand 2 states and 384 transitions. [2023-11-19 08:04:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 231 flow [2023-11-19 08:04:29,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:29,408 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 173 flow [2023-11-19 08:04:29,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=173, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-11-19 08:04:29,414 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-11-19 08:04:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 173 flow [2023-11-19 08:04:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 08:04:29,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:29,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:04:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:29,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash 597389, now seen corresponding path program 1 times [2023-11-19 08:04:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057101007] [2023-11-19 08:04:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:29,525 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 08:04:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057101007] [2023-11-19 08:04:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057101007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:29,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:29,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958095033] [2023-11-19 08:04:29,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 297 [2023-11-19 08:04:29,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 08:04:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:29,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 297 [2023-11-19 08:04:29,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:29,763 INFO L124 PetriNetUnfolderBase]: 213/743 cut-off events. [2023-11-19 08:04:29,764 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:29,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 743 events. 213/743 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4314 event pairs, 76 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1158. Up to 228 conditions per place. [2023-11-19 08:04:29,773 INFO L140 encePairwiseOnDemand]: 286/297 looper letters, 53 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-11-19 08:04:29,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 349 flow [2023-11-19 08:04:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-11-19 08:04:29,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307519640852974 [2023-11-19 08:04:29,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-11-19 08:04:29,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-11-19 08:04:29,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:29,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-11-19 08:04:29,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 08:04:29,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:29,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:29,792 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 173 flow. Second operand 3 states and 562 transitions. [2023-11-19 08:04:29,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 349 flow [2023-11-19 08:04:29,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:29,800 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 243 flow [2023-11-19 08:04:29,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-11-19 08:04:29,802 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 4 predicate places. [2023-11-19 08:04:29,803 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 243 flow [2023-11-19 08:04:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 08:04:29,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:29,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:29,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:04:29,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:29,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash 171376020, now seen corresponding path program 1 times [2023-11-19 08:04:29,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:29,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192889926] [2023-11-19 08:04:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:29,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:30,051 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 08:04:30,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:30,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192889926] [2023-11-19 08:04:30,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192889926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:30,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:30,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018332506] [2023-11-19 08:04:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:30,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 297 [2023-11-19 08:04:30,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 08:04:30,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:30,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 297 [2023-11-19 08:04:30,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:30,354 INFO L124 PetriNetUnfolderBase]: 197/906 cut-off events. [2023-11-19 08:04:30,354 INFO L125 PetriNetUnfolderBase]: For 136/142 co-relation queries the response was YES. [2023-11-19 08:04:30,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 906 events. 197/906 cut-off events. For 136/142 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6169 event pairs, 27 based on Foata normal form. 6/815 useless extension candidates. Maximal degree in co-relation 1447. Up to 348 conditions per place. [2023-11-19 08:04:30,362 INFO L140 encePairwiseOnDemand]: 292/297 looper letters, 52 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-11-19 08:04:30,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 415 flow [2023-11-19 08:04:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 723 transitions. [2023-11-19 08:04:30,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085858585858586 [2023-11-19 08:04:30,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 723 transitions. [2023-11-19 08:04:30,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 723 transitions. [2023-11-19 08:04:30,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:30,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 723 transitions. [2023-11-19 08:04:30,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 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 08:04:30,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:30,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:30,379 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 243 flow. Second operand 4 states and 723 transitions. [2023-11-19 08:04:30,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 415 flow [2023-11-19 08:04:30,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:30,389 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 250 flow [2023-11-19 08:04:30,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2023-11-19 08:04:30,391 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-11-19 08:04:30,391 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 250 flow [2023-11-19 08:04:30,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 08:04:30,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:30,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:30,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:04:30,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:30,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1015300827, now seen corresponding path program 1 times [2023-11-19 08:04:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:30,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459820498] [2023-11-19 08:04:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:30,820 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 08:04:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459820498] [2023-11-19 08:04:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459820498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132760080] [2023-11-19 08:04:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:04:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:04:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:31,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 297 [2023-11-19 08:04:31,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:31,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:31,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 297 [2023-11-19 08:04:31,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:31,573 INFO L124 PetriNetUnfolderBase]: 665/1806 cut-off events. [2023-11-19 08:04:31,573 INFO L125 PetriNetUnfolderBase]: For 173/199 co-relation queries the response was YES. [2023-11-19 08:04:31,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 1806 events. 665/1806 cut-off events. For 173/199 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12439 event pairs, 159 based on Foata normal form. 16/1688 useless extension candidates. Maximal degree in co-relation 3444. Up to 720 conditions per place. [2023-11-19 08:04:31,586 INFO L140 encePairwiseOnDemand]: 274/297 looper letters, 122 selfloop transitions, 29 changer transitions 0/187 dead transitions. [2023-11-19 08:04:31,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 187 transitions, 792 flow [2023-11-19 08:04:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1044 transitions. [2023-11-19 08:04:31,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2023-11-19 08:04:31,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1044 transitions. [2023-11-19 08:04:31,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1044 transitions. [2023-11-19 08:04:31,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:31,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1044 transitions. [2023-11-19 08:04:31,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 08:04:31,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:31,602 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:31,602 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 250 flow. Second operand 6 states and 1044 transitions. [2023-11-19 08:04:31,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 187 transitions, 792 flow [2023-11-19 08:04:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 187 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:31,609 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 467 flow [2023-11-19 08:04:31,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2023-11-19 08:04:31,611 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2023-11-19 08:04:31,611 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 467 flow [2023-11-19 08:04:31,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:31,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:31,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:04:31,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:31,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -806551606, now seen corresponding path program 1 times [2023-11-19 08:04:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347100570] [2023-11-19 08:04:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:31,640 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 08:04:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347100570] [2023-11-19 08:04:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347100570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:31,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188284922] [2023-11-19 08:04:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:31,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:31,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:31,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 297 [2023-11-19 08:04:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 08:04:31,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:31,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 297 [2023-11-19 08:04:31,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:31,975 INFO L124 PetriNetUnfolderBase]: 337/1216 cut-off events. [2023-11-19 08:04:31,975 INFO L125 PetriNetUnfolderBase]: For 304/325 co-relation queries the response was YES. [2023-11-19 08:04:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 1216 events. 337/1216 cut-off events. For 304/325 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8474 event pairs, 128 based on Foata normal form. 4/1144 useless extension candidates. Maximal degree in co-relation 2569. Up to 553 conditions per place. [2023-11-19 08:04:31,990 INFO L140 encePairwiseOnDemand]: 292/297 looper letters, 54 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2023-11-19 08:04:31,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 137 transitions, 629 flow [2023-11-19 08:04:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-11-19 08:04:31,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611672278338945 [2023-11-19 08:04:31,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-11-19 08:04:31,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-11-19 08:04:31,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:31,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-11-19 08:04:31,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 08:04:32,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:32,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:32,001 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 467 flow. Second operand 3 states and 545 transitions. [2023-11-19 08:04:32,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 137 transitions, 629 flow [2023-11-19 08:04:32,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 137 transitions, 629 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:32,011 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 509 flow [2023-11-19 08:04:32,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=509, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2023-11-19 08:04:32,012 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 19 predicate places. [2023-11-19 08:04:32,012 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 509 flow [2023-11-19 08:04:32,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 08:04:32,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:32,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:32,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:04:32,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 746693126, now seen corresponding path program 1 times [2023-11-19 08:04:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155092611] [2023-11-19 08:04:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:32,051 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 08:04:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:32,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155092611] [2023-11-19 08:04:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155092611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767812145] [2023-11-19 08:04:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:32,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 297 [2023-11-19 08:04:32,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 08:04:32,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:32,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 297 [2023-11-19 08:04:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:32,292 INFO L124 PetriNetUnfolderBase]: 333/1163 cut-off events. [2023-11-19 08:04:32,293 INFO L125 PetriNetUnfolderBase]: For 438/471 co-relation queries the response was YES. [2023-11-19 08:04:32,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 1163 events. 333/1163 cut-off events. For 438/471 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7942 event pairs, 42 based on Foata normal form. 30/1118 useless extension candidates. Maximal degree in co-relation 2566. Up to 531 conditions per place. [2023-11-19 08:04:32,304 INFO L140 encePairwiseOnDemand]: 293/297 looper letters, 54 selfloop transitions, 2 changer transitions 2/138 dead transitions. [2023-11-19 08:04:32,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 138 transitions, 673 flow [2023-11-19 08:04:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-11-19 08:04:32,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6240179573512907 [2023-11-19 08:04:32,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-11-19 08:04:32,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-11-19 08:04:32,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:32,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-11-19 08:04:32,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 08:04:32,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:32,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:32,314 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 509 flow. Second operand 3 states and 556 transitions. [2023-11-19 08:04:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 138 transitions, 673 flow [2023-11-19 08:04:32,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 138 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:32,323 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 503 flow [2023-11-19 08:04:32,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=503, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2023-11-19 08:04:32,325 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 19 predicate places. [2023-11-19 08:04:32,325 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 503 flow [2023-11-19 08:04:32,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 08:04:32,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:32,326 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, 1] [2023-11-19 08:04:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:04:32,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:32,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1213693340, now seen corresponding path program 1 times [2023-11-19 08:04:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444889950] [2023-11-19 08:04:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:32,738 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 08:04:32,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444889950] [2023-11-19 08:04:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444889950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023377678] [2023-11-19 08:04:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:04:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:32,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:04:32,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:32,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 297 [2023-11-19 08:04:32,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 503 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 08:04:32,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:32,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 297 [2023-11-19 08:04:32,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:33,632 INFO L124 PetriNetUnfolderBase]: 802/2029 cut-off events. [2023-11-19 08:04:33,633 INFO L125 PetriNetUnfolderBase]: For 975/1026 co-relation queries the response was YES. [2023-11-19 08:04:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 2029 events. 802/2029 cut-off events. For 975/1026 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13978 event pairs, 316 based on Foata normal form. 26/1881 useless extension candidates. Maximal degree in co-relation 5173. Up to 1403 conditions per place. [2023-11-19 08:04:33,654 INFO L140 encePairwiseOnDemand]: 275/297 looper letters, 140 selfloop transitions, 73 changer transitions 0/251 dead transitions. [2023-11-19 08:04:33,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 251 transitions, 1441 flow [2023-11-19 08:04:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1070 transitions. [2023-11-19 08:04:33,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004489337822672 [2023-11-19 08:04:33,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1070 transitions. [2023-11-19 08:04:33,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1070 transitions. [2023-11-19 08:04:33,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:33,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1070 transitions. [2023-11-19 08:04:33,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 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 08:04:33,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:33,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:33,670 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 503 flow. Second operand 6 states and 1070 transitions. [2023-11-19 08:04:33,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 251 transitions, 1441 flow [2023-11-19 08:04:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 251 transitions, 1415 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:33,687 INFO L231 Difference]: Finished difference. Result has 107 places, 195 transitions, 1050 flow [2023-11-19 08:04:33,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1050, PETRI_PLACES=107, PETRI_TRANSITIONS=195} [2023-11-19 08:04:33,689 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2023-11-19 08:04:33,689 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 195 transitions, 1050 flow [2023-11-19 08:04:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 08:04:33,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:33,690 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, 1, 1, 1, 1, 1] [2023-11-19 08:04:33,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:04:33,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:33,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2063312694, now seen corresponding path program 1 times [2023-11-19 08:04:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:33,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766842959] [2023-11-19 08:04:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766842959] [2023-11-19 08:04:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766842959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919343307] [2023-11-19 08:04:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:33,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:33,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:33,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:34,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:34,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919343307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:34,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:04:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 08:04:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076583645] [2023-11-19 08:04:34,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:04:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:04:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:04:34,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 297 [2023-11-19 08:04:34,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 195 transitions, 1050 flow. Second operand has 9 states, 9 states have (on average 167.44444444444446) internal successors, (1507), 9 states have internal predecessors, (1507), 0 states have call successors, (0), 0 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 08:04:34,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:34,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 297 [2023-11-19 08:04:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:34,746 INFO L124 PetriNetUnfolderBase]: 312/1130 cut-off events. [2023-11-19 08:04:34,747 INFO L125 PetriNetUnfolderBase]: For 664/706 co-relation queries the response was YES. [2023-11-19 08:04:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1130 events. 312/1130 cut-off events. For 664/706 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7754 event pairs, 38 based on Foata normal form. 6/1073 useless extension candidates. Maximal degree in co-relation 2778. Up to 277 conditions per place. [2023-11-19 08:04:34,760 INFO L140 encePairwiseOnDemand]: 289/297 looper letters, 63 selfloop transitions, 6 changer transitions 12/206 dead transitions. [2023-11-19 08:04:34,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 206 transitions, 1162 flow [2023-11-19 08:04:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:04:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:04:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1374 transitions. [2023-11-19 08:04:34,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5782828282828283 [2023-11-19 08:04:34,768 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1374 transitions. [2023-11-19 08:04:34,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1374 transitions. [2023-11-19 08:04:34,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:34,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1374 transitions. [2023-11-19 08:04:34,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.75) internal successors, (1374), 8 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 08:04:34,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 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 08:04:34,782 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 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 08:04:34,783 INFO L175 Difference]: Start difference. First operand has 107 places, 195 transitions, 1050 flow. Second operand 8 states and 1374 transitions. [2023-11-19 08:04:34,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 206 transitions, 1162 flow [2023-11-19 08:04:34,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 206 transitions, 1096 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:34,799 INFO L231 Difference]: Finished difference. Result has 113 places, 163 transitions, 812 flow [2023-11-19 08:04:34,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=113, PETRI_TRANSITIONS=163} [2023-11-19 08:04:34,803 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2023-11-19 08:04:34,803 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 163 transitions, 812 flow [2023-11-19 08:04:34,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.44444444444446) internal successors, (1507), 9 states have internal predecessors, (1507), 0 states have call successors, (0), 0 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 08:04:34,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:34,805 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, 1, 1, 1, 1, 1] [2023-11-19 08:04:34,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:35,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:35,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -643586607, now seen corresponding path program 1 times [2023-11-19 08:04:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:35,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778939545] [2023-11-19 08:04:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:35,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:35,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778939545] [2023-11-19 08:04:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778939545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943233468] [2023-11-19 08:04:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:35,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:35,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 297 [2023-11-19 08:04:35,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 163 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 08:04:35,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:35,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 297 [2023-11-19 08:04:35,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:35,556 INFO L124 PetriNetUnfolderBase]: 337/1129 cut-off events. [2023-11-19 08:04:35,556 INFO L125 PetriNetUnfolderBase]: For 622/662 co-relation queries the response was YES. [2023-11-19 08:04:35,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 1129 events. 337/1129 cut-off events. For 622/662 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7472 event pairs, 113 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 2888. Up to 458 conditions per place. [2023-11-19 08:04:35,569 INFO L140 encePairwiseOnDemand]: 293/297 looper letters, 41 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-11-19 08:04:35,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 912 flow [2023-11-19 08:04:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2023-11-19 08:04:35,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942760942760943 [2023-11-19 08:04:35,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 706 transitions. [2023-11-19 08:04:35,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 706 transitions. [2023-11-19 08:04:35,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:35,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 706 transitions. [2023-11-19 08:04:35,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 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 08:04:35,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:35,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:35,582 INFO L175 Difference]: Start difference. First operand has 113 places, 163 transitions, 812 flow. Second operand 4 states and 706 transitions. [2023-11-19 08:04:35,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 912 flow [2023-11-19 08:04:35,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 167 transitions, 903 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:35,597 INFO L231 Difference]: Finished difference. Result has 106 places, 165 transitions, 825 flow [2023-11-19 08:04:35,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=825, PETRI_PLACES=106, PETRI_TRANSITIONS=165} [2023-11-19 08:04:35,599 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 24 predicate places. [2023-11-19 08:04:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 165 transitions, 825 flow [2023-11-19 08:04:35,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 08:04:35,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:35,602 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:04:35,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:35,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -371739301, now seen corresponding path program 1 times [2023-11-19 08:04:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:35,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448669219] [2023-11-19 08:04:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:35,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:35,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448669219] [2023-11-19 08:04:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448669219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:35,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:35,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562218775] [2023-11-19 08:04:35,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:35,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:35,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 297 [2023-11-19 08:04:35,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 165 transitions, 825 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 08:04:35,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:35,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 297 [2023-11-19 08:04:35,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:36,086 INFO L124 PetriNetUnfolderBase]: 351/1179 cut-off events. [2023-11-19 08:04:36,087 INFO L125 PetriNetUnfolderBase]: For 614/644 co-relation queries the response was YES. [2023-11-19 08:04:36,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3028 conditions, 1179 events. 351/1179 cut-off events. For 614/644 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7909 event pairs, 125 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 3007. Up to 486 conditions per place. [2023-11-19 08:04:36,102 INFO L140 encePairwiseOnDemand]: 293/297 looper letters, 42 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-11-19 08:04:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 921 flow [2023-11-19 08:04:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-11-19 08:04:36,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5917508417508418 [2023-11-19 08:04:36,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-11-19 08:04:36,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-11-19 08:04:36,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:36,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-11-19 08:04:36,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 08:04:36,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:36,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 08:04:36,115 INFO L175 Difference]: Start difference. First operand has 106 places, 165 transitions, 825 flow. Second operand 4 states and 703 transitions. [2023-11-19 08:04:36,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 921 flow [2023-11-19 08:04:36,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 919 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:36,130 INFO L231 Difference]: Finished difference. Result has 109 places, 165 transitions, 833 flow [2023-11-19 08:04:36,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=109, PETRI_TRANSITIONS=165} [2023-11-19 08:04:36,132 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2023-11-19 08:04:36,132 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 165 transitions, 833 flow [2023-11-19 08:04:36,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 08:04:36,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:36,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:36,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:04:36,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:36,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash -671331075, now seen corresponding path program 1 times [2023-11-19 08:04:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:36,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688817817] [2023-11-19 08:04:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:36,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:36,823 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 08:04:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:36,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688817817] [2023-11-19 08:04:36,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688817817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:36,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:36,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:04:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997102950] [2023-11-19 08:04:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:04:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:04:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:37,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 297 [2023-11-19 08:04:37,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 165 transitions, 833 flow. Second operand has 8 states, 8 states have (on average 152.125) internal successors, (1217), 8 states have internal predecessors, (1217), 0 states have call successors, (0), 0 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 08:04:37,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:37,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 297 [2023-11-19 08:04:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:37,554 INFO L124 PetriNetUnfolderBase]: 544/1469 cut-off events. [2023-11-19 08:04:37,555 INFO L125 PetriNetUnfolderBase]: For 1030/1065 co-relation queries the response was YES. [2023-11-19 08:04:37,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4235 conditions, 1469 events. 544/1469 cut-off events. For 1030/1065 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9497 event pairs, 256 based on Foata normal form. 44/1428 useless extension candidates. Maximal degree in co-relation 4213. Up to 1044 conditions per place. [2023-11-19 08:04:37,573 INFO L140 encePairwiseOnDemand]: 290/297 looper letters, 115 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2023-11-19 08:04:37,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 171 transitions, 1107 flow [2023-11-19 08:04:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:04:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:04:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1094 transitions. [2023-11-19 08:04:37,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262145262145262 [2023-11-19 08:04:37,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1094 transitions. [2023-11-19 08:04:37,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1094 transitions. [2023-11-19 08:04:37,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:37,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1094 transitions. [2023-11-19 08:04:37,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 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 08:04:37,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 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 08:04:37,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 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 08:04:37,592 INFO L175 Difference]: Start difference. First operand has 109 places, 165 transitions, 833 flow. Second operand 7 states and 1094 transitions. [2023-11-19 08:04:37,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 171 transitions, 1107 flow [2023-11-19 08:04:37,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 171 transitions, 1089 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:37,609 INFO L231 Difference]: Finished difference. Result has 113 places, 167 transitions, 859 flow [2023-11-19 08:04:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=113, PETRI_TRANSITIONS=167} [2023-11-19 08:04:37,611 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2023-11-19 08:04:37,611 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 167 transitions, 859 flow [2023-11-19 08:04:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 152.125) internal successors, (1217), 8 states have internal predecessors, (1217), 0 states have call successors, (0), 0 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 08:04:37,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:37,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:04:37,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:37,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash -37594825, now seen corresponding path program 1 times [2023-11-19 08:04:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246183352] [2023-11-19 08:04:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:38,217 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 08:04:38,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246183352] [2023-11-19 08:04:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246183352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:38,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:04:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287062420] [2023-11-19 08:04:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:04:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:04:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:38,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 297 [2023-11-19 08:04:38,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 167 transitions, 859 flow. Second operand has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 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 08:04:38,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:38,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 297 [2023-11-19 08:04:38,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:39,156 INFO L124 PetriNetUnfolderBase]: 601/1541 cut-off events. [2023-11-19 08:04:39,157 INFO L125 PetriNetUnfolderBase]: For 1113/1150 co-relation queries the response was YES. [2023-11-19 08:04:39,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 1541 events. 601/1541 cut-off events. For 1113/1150 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9852 event pairs, 258 based on Foata normal form. 22/1457 useless extension candidates. Maximal degree in co-relation 4481. Up to 899 conditions per place. [2023-11-19 08:04:39,177 INFO L140 encePairwiseOnDemand]: 286/297 looper letters, 185 selfloop transitions, 45 changer transitions 0/264 dead transitions. [2023-11-19 08:04:39,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 1838 flow [2023-11-19 08:04:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:04:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:04:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1157 transitions. [2023-11-19 08:04:39,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565175565175565 [2023-11-19 08:04:39,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1157 transitions. [2023-11-19 08:04:39,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1157 transitions. [2023-11-19 08:04:39,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:39,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1157 transitions. [2023-11-19 08:04:39,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 0 states have call successors, (0), 0 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 08:04:39,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 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 08:04:39,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 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 08:04:39,194 INFO L175 Difference]: Start difference. First operand has 113 places, 167 transitions, 859 flow. Second operand 7 states and 1157 transitions. [2023-11-19 08:04:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 1838 flow [2023-11-19 08:04:39,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 264 transitions, 1835 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:39,213 INFO L231 Difference]: Finished difference. Result has 122 places, 178 transitions, 1088 flow [2023-11-19 08:04:39,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1088, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2023-11-19 08:04:39,215 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2023-11-19 08:04:39,215 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 1088 flow [2023-11-19 08:04:39,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 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 08:04:39,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:39,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:04:39,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting threadErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:39,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1933588873, now seen corresponding path program 1 times [2023-11-19 08:04:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077507080] [2023-11-19 08:04:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:39,278 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 08:04:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077507080] [2023-11-19 08:04:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077507080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697635556] [2023-11-19 08:04:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:39,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:39,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 297 [2023-11-19 08:04:39,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 1088 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 08:04:39,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:39,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 297 [2023-11-19 08:04:39,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:39,583 INFO L124 PetriNetUnfolderBase]: 340/1120 cut-off events. [2023-11-19 08:04:39,583 INFO L125 PetriNetUnfolderBase]: For 1320/1345 co-relation queries the response was YES. [2023-11-19 08:04:39,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 1120 events. 340/1120 cut-off events. For 1320/1345 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7370 event pairs, 103 based on Foata normal form. 6/1075 useless extension candidates. Maximal degree in co-relation 3303. Up to 413 conditions per place. [2023-11-19 08:04:39,601 INFO L140 encePairwiseOnDemand]: 291/297 looper letters, 50 selfloop transitions, 10 changer transitions 0/192 dead transitions. [2023-11-19 08:04:39,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 192 transitions, 1264 flow [2023-11-19 08:04:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-11-19 08:04:39,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127946127946128 [2023-11-19 08:04:39,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-11-19 08:04:39,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-11-19 08:04:39,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:39,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-11-19 08:04:39,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 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 08:04:39,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:39,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:39,610 INFO L175 Difference]: Start difference. First operand has 122 places, 178 transitions, 1088 flow. Second operand 3 states and 546 transitions. [2023-11-19 08:04:39,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 192 transitions, 1264 flow [2023-11-19 08:04:39,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 192 transitions, 1247 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:39,628 INFO L231 Difference]: Finished difference. Result has 124 places, 184 transitions, 1143 flow [2023-11-19 08:04:39,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1143, PETRI_PLACES=124, PETRI_TRANSITIONS=184} [2023-11-19 08:04:39,630 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 42 predicate places. [2023-11-19 08:04:39,630 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 184 transitions, 1143 flow [2023-11-19 08:04:39,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 08:04:39,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:39,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:39,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:04:39,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:39,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1506151423, now seen corresponding path program 1 times [2023-11-19 08:04:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226453255] [2023-11-19 08:04:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:40,013 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 08:04:40,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226453255] [2023-11-19 08:04:40,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226453255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:40,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:40,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132984952] [2023-11-19 08:04:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:40,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:04:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:04:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:40,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 297 [2023-11-19 08:04:40,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 184 transitions, 1143 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 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 08:04:40,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:40,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 297 [2023-11-19 08:04:40,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:40,777 INFO L124 PetriNetUnfolderBase]: 526/1428 cut-off events. [2023-11-19 08:04:40,777 INFO L125 PetriNetUnfolderBase]: For 2446/2484 co-relation queries the response was YES. [2023-11-19 08:04:40,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 conditions, 1428 events. 526/1428 cut-off events. For 2446/2484 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9147 event pairs, 124 based on Foata normal form. 12/1378 useless extension candidates. Maximal degree in co-relation 4635. Up to 702 conditions per place. [2023-11-19 08:04:40,789 INFO L140 encePairwiseOnDemand]: 286/297 looper letters, 94 selfloop transitions, 41 changer transitions 42/263 dead transitions. [2023-11-19 08:04:40,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 263 transitions, 1889 flow [2023-11-19 08:04:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2023-11-19 08:04:40,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2023-11-19 08:04:40,794 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2023-11-19 08:04:40,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2023-11-19 08:04:40,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:40,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2023-11-19 08:04:40,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 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 08:04:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 08:04:40,811 INFO L175 Difference]: Start difference. First operand has 124 places, 184 transitions, 1143 flow. Second operand 6 states and 1062 transitions. [2023-11-19 08:04:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 263 transitions, 1889 flow [2023-11-19 08:04:40,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 263 transitions, 1869 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:40,836 INFO L231 Difference]: Finished difference. Result has 133 places, 209 transitions, 1490 flow [2023-11-19 08:04:40,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1490, PETRI_PLACES=133, PETRI_TRANSITIONS=209} [2023-11-19 08:04:40,838 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 51 predicate places. [2023-11-19 08:04:40,838 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 209 transitions, 1490 flow [2023-11-19 08:04:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 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 08:04:40,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:40,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:40,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:04:40,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:40,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 731242881, now seen corresponding path program 1 times [2023-11-19 08:04:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20831339] [2023-11-19 08:04:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:41,108 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 08:04:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20831339] [2023-11-19 08:04:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20831339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:41,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:04:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165385622] [2023-11-19 08:04:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:04:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:04:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:41,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 297 [2023-11-19 08:04:41,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 209 transitions, 1490 flow. Second operand has 7 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 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 08:04:41,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:41,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 297 [2023-11-19 08:04:41,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:41,809 INFO L124 PetriNetUnfolderBase]: 429/1429 cut-off events. [2023-11-19 08:04:41,810 INFO L125 PetriNetUnfolderBase]: For 2268/2300 co-relation queries the response was YES. [2023-11-19 08:04:41,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 1429 events. 429/1429 cut-off events. For 2268/2300 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10053 event pairs, 62 based on Foata normal form. 51/1444 useless extension candidates. Maximal degree in co-relation 4599. Up to 214 conditions per place. [2023-11-19 08:04:41,823 INFO L140 encePairwiseOnDemand]: 285/297 looper letters, 104 selfloop transitions, 37 changer transitions 4/302 dead transitions. [2023-11-19 08:04:41,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 302 transitions, 2166 flow [2023-11-19 08:04:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:04:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:04:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2328 transitions. [2023-11-19 08:04:41,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598845598845599 [2023-11-19 08:04:41,832 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2328 transitions. [2023-11-19 08:04:41,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2328 transitions. [2023-11-19 08:04:41,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:41,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2328 transitions. [2023-11-19 08:04:41,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.28571428571428) internal successors, (2328), 14 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 08:04:41,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 297.0) internal successors, (4455), 15 states have internal predecessors, (4455), 0 states have call successors, (0), 0 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 08:04:41,850 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 297.0) internal successors, (4455), 15 states have internal predecessors, (4455), 0 states have call successors, (0), 0 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 08:04:41,850 INFO L175 Difference]: Start difference. First operand has 133 places, 209 transitions, 1490 flow. Second operand 14 states and 2328 transitions. [2023-11-19 08:04:41,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 302 transitions, 2166 flow [2023-11-19 08:04:41,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 302 transitions, 2118 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:41,886 INFO L231 Difference]: Finished difference. Result has 147 places, 240 transitions, 1680 flow [2023-11-19 08:04:41,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1680, PETRI_PLACES=147, PETRI_TRANSITIONS=240} [2023-11-19 08:04:41,888 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 65 predicate places. [2023-11-19 08:04:41,888 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 240 transitions, 1680 flow [2023-11-19 08:04:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 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 08:04:41,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:41,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:04:41,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:41,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1160364347, now seen corresponding path program 1 times [2023-11-19 08:04:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:41,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412655572] [2023-11-19 08:04:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:42,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:42,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412655572] [2023-11-19 08:04:42,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412655572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:42,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604568557] [2023-11-19 08:04:42,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:42,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:42,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:42,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 297 [2023-11-19 08:04:42,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 240 transitions, 1680 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 08:04:42,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:42,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 297 [2023-11-19 08:04:42,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:42,297 INFO L124 PetriNetUnfolderBase]: 329/1239 cut-off events. [2023-11-19 08:04:42,298 INFO L125 PetriNetUnfolderBase]: For 2420/2455 co-relation queries the response was YES. [2023-11-19 08:04:42,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 1239 events. 329/1239 cut-off events. For 2420/2455 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8591 event pairs, 66 based on Foata normal form. 6/1229 useless extension candidates. Maximal degree in co-relation 4296. Up to 236 conditions per place. [2023-11-19 08:04:42,309 INFO L140 encePairwiseOnDemand]: 294/297 looper letters, 70 selfloop transitions, 7 changer transitions 2/254 dead transitions. [2023-11-19 08:04:42,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 254 transitions, 1914 flow [2023-11-19 08:04:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-11-19 08:04:42,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206509539842873 [2023-11-19 08:04:42,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-11-19 08:04:42,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-11-19 08:04:42,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:42,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-11-19 08:04:42,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 08:04:42,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:42,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 08:04:42,318 INFO L175 Difference]: Start difference. First operand has 147 places, 240 transitions, 1680 flow. Second operand 3 states and 553 transitions. [2023-11-19 08:04:42,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 254 transitions, 1914 flow [2023-11-19 08:04:42,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 254 transitions, 1892 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:42,379 INFO L231 Difference]: Finished difference. Result has 146 places, 236 transitions, 1656 flow [2023-11-19 08:04:42,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1656, PETRI_PLACES=146, PETRI_TRANSITIONS=236} [2023-11-19 08:04:42,380 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 64 predicate places. [2023-11-19 08:04:42,380 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 236 transitions, 1656 flow [2023-11-19 08:04:42,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 08:04:42,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:42,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:42,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:04:42,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:42,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1253222374, now seen corresponding path program 1 times [2023-11-19 08:04:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608141845] [2023-11-19 08:04:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608141845] [2023-11-19 08:04:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608141845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001061481] [2023-11-19 08:04:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:43,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:43,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:43,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:43,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 08:04:43,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:43,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:04:43,614 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:04:43,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 08:04:43,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 08:04:43,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:04:43,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 08:04:43,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 08:04:43,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:43,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 08:04:43,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:43,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 08:04:43,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:43,883 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 08:04:43,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001061481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:43,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:43,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2023-11-19 08:04:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556523701] [2023-11-19 08:04:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:43,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:04:43,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:43,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:04:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:04:44,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 297 [2023-11-19 08:04:44,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 236 transitions, 1656 flow. Second operand has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 08:04:44,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:44,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 297 [2023-11-19 08:04:44,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:45,350 INFO L124 PetriNetUnfolderBase]: 722/1990 cut-off events. [2023-11-19 08:04:45,351 INFO L125 PetriNetUnfolderBase]: For 4804/4871 co-relation queries the response was YES. [2023-11-19 08:04:45,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7592 conditions, 1990 events. 722/1990 cut-off events. For 4804/4871 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13974 event pairs, 199 based on Foata normal form. 25/1981 useless extension candidates. Maximal degree in co-relation 7553. Up to 493 conditions per place. [2023-11-19 08:04:45,371 INFO L140 encePairwiseOnDemand]: 287/297 looper letters, 264 selfloop transitions, 54 changer transitions 18/382 dead transitions. [2023-11-19 08:04:45,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 382 transitions, 3516 flow [2023-11-19 08:04:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:04:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1374 transitions. [2023-11-19 08:04:45,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140291806958474 [2023-11-19 08:04:45,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1374 transitions. [2023-11-19 08:04:45,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1374 transitions. [2023-11-19 08:04:45,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:45,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1374 transitions. [2023-11-19 08:04:45,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.66666666666666) internal successors, (1374), 9 states have internal predecessors, (1374), 0 states have call successors, (0), 0 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 08:04:45,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 297.0) internal successors, (2970), 10 states have internal predecessors, (2970), 0 states have call successors, (0), 0 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 08:04:45,391 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 297.0) internal successors, (2970), 10 states have internal predecessors, (2970), 0 states have call successors, (0), 0 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 08:04:45,391 INFO L175 Difference]: Start difference. First operand has 146 places, 236 transitions, 1656 flow. Second operand 9 states and 1374 transitions. [2023-11-19 08:04:45,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 382 transitions, 3516 flow [2023-11-19 08:04:45,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 382 transitions, 3490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:45,440 INFO L231 Difference]: Finished difference. Result has 157 places, 273 transitions, 2320 flow [2023-11-19 08:04:45,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2320, PETRI_PLACES=157, PETRI_TRANSITIONS=273} [2023-11-19 08:04:45,441 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 75 predicate places. [2023-11-19 08:04:45,442 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 273 transitions, 2320 flow [2023-11-19 08:04:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 08:04:45,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:45,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:45,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:04:45,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:45,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984680, now seen corresponding path program 2 times [2023-11-19 08:04:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555342995] [2023-11-19 08:04:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555342995] [2023-11-19 08:04:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555342995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780425257] [2023-11-19 08:04:46,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:04:46,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:46,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:46,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:46,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:04:46,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:46,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:04:46,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:46,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:04:47,214 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:04:47,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 08:04:47,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 08:04:47,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 08:04:47,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 08:04:47,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:47,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 08:04:47,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:04:47,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2023-11-19 08:04:47,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:47,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 08:04:47,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:47,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:47,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:47,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:47,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780425257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:47,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:47,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-19 08:04:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664994785] [2023-11-19 08:04:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:47,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:04:47,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:04:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:04:48,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 297 [2023-11-19 08:04:48,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 273 transitions, 2320 flow. Second operand has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:04:48,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:48,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 297 [2023-11-19 08:04:48,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:49,983 INFO L124 PetriNetUnfolderBase]: 737/2004 cut-off events. [2023-11-19 08:04:49,983 INFO L125 PetriNetUnfolderBase]: For 5734/5808 co-relation queries the response was YES. [2023-11-19 08:04:49,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 2004 events. 737/2004 cut-off events. For 5734/5808 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14023 event pairs, 175 based on Foata normal form. 29/1997 useless extension candidates. Maximal degree in co-relation 8145. Up to 830 conditions per place. [2023-11-19 08:04:50,007 INFO L140 encePairwiseOnDemand]: 283/297 looper letters, 259 selfloop transitions, 101 changer transitions 24/430 dead transitions. [2023-11-19 08:04:50,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 430 transitions, 4195 flow [2023-11-19 08:04:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:04:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:04:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2144 transitions. [2023-11-19 08:04:50,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156325156325157 [2023-11-19 08:04:50,018 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2144 transitions. [2023-11-19 08:04:50,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2144 transitions. [2023-11-19 08:04:50,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:50,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2144 transitions. [2023-11-19 08:04:50,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 153.14285714285714) internal successors, (2144), 14 states have internal predecessors, (2144), 0 states have call successors, (0), 0 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 08:04:50,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 297.0) internal successors, (4455), 15 states have internal predecessors, (4455), 0 states have call successors, (0), 0 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 08:04:50,037 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 297.0) internal successors, (4455), 15 states have internal predecessors, (4455), 0 states have call successors, (0), 0 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 08:04:50,037 INFO L175 Difference]: Start difference. First operand has 157 places, 273 transitions, 2320 flow. Second operand 14 states and 2144 transitions. [2023-11-19 08:04:50,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 430 transitions, 4195 flow [2023-11-19 08:04:50,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 430 transitions, 4168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:50,115 INFO L231 Difference]: Finished difference. Result has 171 places, 307 transitions, 2916 flow [2023-11-19 08:04:50,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2916, PETRI_PLACES=171, PETRI_TRANSITIONS=307} [2023-11-19 08:04:50,116 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 89 predicate places. [2023-11-19 08:04:50,117 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 307 transitions, 2916 flow [2023-11-19 08:04:50,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:04:50,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:50,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:50,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:04:50,331 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:50,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash -623314611, now seen corresponding path program 1 times [2023-11-19 08:04:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762949477] [2023-11-19 08:04:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:51,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762949477] [2023-11-19 08:04:51,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762949477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48651606] [2023-11-19 08:04:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:51,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:51,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:51,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:51,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:51,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 08:04:51,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:51,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:04:51,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-19 08:04:51,421 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 08:04:51,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-19 08:04:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:04:51,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 08:04:51,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:04:51,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 08:04:51,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 08:04:51,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:51,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 08:04:51,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:51,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 08:04:51,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:51,589 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 08:04:51,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48651606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2023-11-19 08:04:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400128889] [2023-11-19 08:04:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:51,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:04:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:04:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:04:52,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 297 [2023-11-19 08:04:52,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 307 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 155.2) internal successors, (1552), 10 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 08:04:52,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:52,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 297 [2023-11-19 08:04:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:53,270 INFO L124 PetriNetUnfolderBase]: 560/1684 cut-off events. [2023-11-19 08:04:53,270 INFO L125 PetriNetUnfolderBase]: For 6469/6554 co-relation queries the response was YES. [2023-11-19 08:04:53,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7201 conditions, 1684 events. 560/1684 cut-off events. For 6469/6554 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11885 event pairs, 85 based on Foata normal form. 37/1695 useless extension candidates. Maximal degree in co-relation 7153. Up to 342 conditions per place. [2023-11-19 08:04:53,288 INFO L140 encePairwiseOnDemand]: 288/297 looper letters, 146 selfloop transitions, 22 changer transitions 152/402 dead transitions. [2023-11-19 08:04:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 402 transitions, 4374 flow [2023-11-19 08:04:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:04:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1490 transitions. [2023-11-19 08:04:53,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574261129816686 [2023-11-19 08:04:53,295 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1490 transitions. [2023-11-19 08:04:53,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1490 transitions. [2023-11-19 08:04:53,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:53,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1490 transitions. [2023-11-19 08:04:53,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.55555555555554) internal successors, (1490), 9 states have internal predecessors, (1490), 0 states have call successors, (0), 0 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 08:04:53,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 297.0) internal successors, (2970), 10 states have internal predecessors, (2970), 0 states have call successors, (0), 0 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 08:04:53,305 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 297.0) internal successors, (2970), 10 states have internal predecessors, (2970), 0 states have call successors, (0), 0 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 08:04:53,306 INFO L175 Difference]: Start difference. First operand has 171 places, 307 transitions, 2916 flow. Second operand 9 states and 1490 transitions. [2023-11-19 08:04:53,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 402 transitions, 4374 flow [2023-11-19 08:04:53,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 402 transitions, 4170 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:53,371 INFO L231 Difference]: Finished difference. Result has 174 places, 223 transitions, 1769 flow [2023-11-19 08:04:53,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1769, PETRI_PLACES=174, PETRI_TRANSITIONS=223} [2023-11-19 08:04:53,372 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 92 predicate places. [2023-11-19 08:04:53,372 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 223 transitions, 1769 flow [2023-11-19 08:04:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.2) internal successors, (1552), 10 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 08:04:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:53,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:53,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:53,591 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:53,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -469587584, now seen corresponding path program 3 times [2023-11-19 08:04:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794249814] [2023-11-19 08:04:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:53,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794249814] [2023-11-19 08:04:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794249814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330261184] [2023-11-19 08:04:54,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:04:54,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:54,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:54,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 08:04:54,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:54,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 08:04:54,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:54,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:04:54,977 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:04:54,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 08:04:55,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 08:04:55,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 08:04:55,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 08:04:55,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:04:55,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:55,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 08:04:55,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2023-11-19 08:04:55,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:55,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 08:04:55,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:55,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:55,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:55,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:55,510 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 08:04:55,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330261184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:55,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-19 08:04:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158235583] [2023-11-19 08:04:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:55,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:04:55,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:04:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:04:56,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 297 [2023-11-19 08:04:56,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 223 transitions, 1769 flow. Second operand has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:04:56,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:56,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 297 [2023-11-19 08:04:56,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:57,456 INFO L124 PetriNetUnfolderBase]: 539/1503 cut-off events. [2023-11-19 08:04:57,456 INFO L125 PetriNetUnfolderBase]: For 4464/4528 co-relation queries the response was YES. [2023-11-19 08:04:57,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6115 conditions, 1503 events. 539/1503 cut-off events. For 4464/4528 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9834 event pairs, 118 based on Foata normal form. 33/1513 useless extension candidates. Maximal degree in co-relation 6067. Up to 488 conditions per place. [2023-11-19 08:04:57,470 INFO L140 encePairwiseOnDemand]: 286/297 looper letters, 209 selfloop transitions, 46 changer transitions 36/336 dead transitions. [2023-11-19 08:04:57,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 336 transitions, 3267 flow [2023-11-19 08:04:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:04:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 08:04:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1675 transitions. [2023-11-19 08:04:57,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127027854300582 [2023-11-19 08:04:57,476 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1675 transitions. [2023-11-19 08:04:57,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1675 transitions. [2023-11-19 08:04:57,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:57,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1675 transitions. [2023-11-19 08:04:57,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 152.27272727272728) internal successors, (1675), 11 states have internal predecessors, (1675), 0 states have call successors, (0), 0 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 08:04:57,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 297.0) internal successors, (3564), 12 states have internal predecessors, (3564), 0 states have call successors, (0), 0 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 08:04:57,488 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 297.0) internal successors, (3564), 12 states have internal predecessors, (3564), 0 states have call successors, (0), 0 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 08:04:57,488 INFO L175 Difference]: Start difference. First operand has 174 places, 223 transitions, 1769 flow. Second operand 11 states and 1675 transitions. [2023-11-19 08:04:57,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 336 transitions, 3267 flow [2023-11-19 08:04:57,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 336 transitions, 2882 flow, removed 119 selfloop flow, removed 16 redundant places. [2023-11-19 08:04:57,537 INFO L231 Difference]: Finished difference. Result has 166 places, 236 transitions, 1876 flow [2023-11-19 08:04:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1876, PETRI_PLACES=166, PETRI_TRANSITIONS=236} [2023-11-19 08:04:57,538 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 84 predicate places. [2023-11-19 08:04:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 236 transitions, 1876 flow [2023-11-19 08:04:57,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:04:57,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:57,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:57,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 08:04:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-19 08:04:57,755 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:04:57,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 598289228, now seen corresponding path program 4 times [2023-11-19 08:04:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:57,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830315027] [2023-11-19 08:04:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830315027] [2023-11-19 08:04:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830315027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:58,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843531996] [2023-11-19 08:04:58,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:04:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:58,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:58,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:58,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:04:58,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:58,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:04:58,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:58,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-19 08:04:59,026 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-19 08:04:59,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 08:04:59,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 08:04:59,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 08:04:59,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:04:59,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 08:04:59,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:59,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 08:04:59,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:04:59,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 08:04:59,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:59,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:59,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:59,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:59,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 08:04:59,461 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 08:04:59,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843531996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-19 08:04:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877893648] [2023-11-19 08:04:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:59,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:04:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:04:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:05:00,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 297 [2023-11-19 08:05:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 236 transitions, 1876 flow. Second operand has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:05:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 297 [2023-11-19 08:05:00,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:00,976 INFO L124 PetriNetUnfolderBase]: 511/1441 cut-off events. [2023-11-19 08:05:00,976 INFO L125 PetriNetUnfolderBase]: For 3444/3505 co-relation queries the response was YES. [2023-11-19 08:05:00,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 1441 events. 511/1441 cut-off events. For 3444/3505 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9296 event pairs, 114 based on Foata normal form. 32/1450 useless extension candidates. Maximal degree in co-relation 5494. Up to 393 conditions per place. [2023-11-19 08:05:00,989 INFO L140 encePairwiseOnDemand]: 287/297 looper letters, 128 selfloop transitions, 16 changer transitions 125/309 dead transitions. [2023-11-19 08:05:00,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 309 transitions, 2836 flow [2023-11-19 08:05:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:05:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 08:05:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1514 transitions. [2023-11-19 08:05:00,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097643097643098 [2023-11-19 08:05:00,998 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1514 transitions. [2023-11-19 08:05:00,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1514 transitions. [2023-11-19 08:05:01,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:01,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1514 transitions. [2023-11-19 08:05:01,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.4) internal successors, (1514), 10 states have internal predecessors, (1514), 0 states have call successors, (0), 0 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 08:05:01,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 297.0) internal successors, (3267), 11 states have internal predecessors, (3267), 0 states have call successors, (0), 0 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 08:05:01,017 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 297.0) internal successors, (3267), 11 states have internal predecessors, (3267), 0 states have call successors, (0), 0 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 08:05:01,017 INFO L175 Difference]: Start difference. First operand has 166 places, 236 transitions, 1876 flow. Second operand 10 states and 1514 transitions. [2023-11-19 08:05:01,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 309 transitions, 2836 flow [2023-11-19 08:05:01,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 309 transitions, 2680 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-19 08:05:01,066 INFO L231 Difference]: Finished difference. Result has 167 places, 158 transitions, 1058 flow [2023-11-19 08:05:01,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1058, PETRI_PLACES=167, PETRI_TRANSITIONS=158} [2023-11-19 08:05:01,067 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 85 predicate places. [2023-11-19 08:05:01,067 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 158 transitions, 1058 flow [2023-11-19 08:05:01,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 08:05:01,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:01,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:01,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f162eee-4a71-4192-a1dc-250516dd41de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 08:05:01,283 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 08:05:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -656779170, now seen corresponding path program 1 times [2023-11-19 08:05:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110040817] [2023-11-19 08:05:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:01,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:05:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:01,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:05:01,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:05:01,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-19 08:05:01,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-11-19 08:05:01,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-11-19 08:05:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-11-19 08:05:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-11-19 08:05:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-11-19 08:05:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-11-19 08:05:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-11-19 08:05:01,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-11-19 08:05:01,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-11-19 08:05:01,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-11-19 08:05:01,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-11-19 08:05:01,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-11-19 08:05:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 08:05:01,403 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:01,406 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:05:01,406 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:05:01,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:05:01,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,513 INFO L124 PetriNetUnfolderBase]: 27/455 cut-off events. [2023-11-19 08:05:01,513 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:05:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 455 events. 27/455 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1193 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 270. Up to 9 conditions per place. [2023-11-19 08:05:01,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,519 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:01,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 230 transitions, 476 flow [2023-11-19 08:05:01,577 INFO L124 PetriNetUnfolderBase]: 27/455 cut-off events. [2023-11-19 08:05:01,578 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:05:01,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 455 events. 27/455 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1193 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 270. Up to 9 conditions per place. [2023-11-19 08:05:01,599 INFO L119 LiptonReduction]: Number of co-enabled transitions 21780 [2023-11-19 08:05:04,783 INFO L134 LiptonReduction]: Checked pairs total: 124592 [2023-11-19 08:05:04,784 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-11-19 08:05:04,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:04,786 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5abb688f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:04,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 08:05:04,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:04,787 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 08:05:04,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:04,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:04,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:05:04,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 08:05:04,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1016, now seen corresponding path program 1 times [2023-11-19 08:05:04,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:04,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221811587] [2023-11-19 08:05:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,795 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 08:05:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221811587] [2023-11-19 08:05:04,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221811587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:04,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:04,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:05:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764948763] [2023-11-19 08:05:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:04,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:04,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 364 [2023-11-19 08:05:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 115 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 08:05:04,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:04,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 364 [2023-11-19 08:05:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand