./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya --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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:55,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:55,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-28 23:51:55,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:55,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:55,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:55,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:55,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:55,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:55,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:55,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:55,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:55,360 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:55,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:55,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:55,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:55,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:55,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:55,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:55,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:55,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:55,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:55,365 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-28 23:51:55,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:51:55,366 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:55,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:55,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:55,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:55,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:55,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:55,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:55,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:55,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:55,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:55,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:55,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:55,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:55,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:55,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:55,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:55,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:55,372 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_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2023-11-28 23:51:55,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:55,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:55,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:55,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:55,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:55,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-28 23:51:58,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:58,650 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:58,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-28 23:51:58,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/data/6ed5fb943/20779ef95ff4463f88637c3e820aae43/FLAG829baec5e [2023-11-28 23:51:58,683 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/data/6ed5fb943/20779ef95ff4463f88637c3e820aae43 [2023-11-28 23:51:58,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:58,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:58,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:58,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:58,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:58,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29213d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58, skipping insertion in model container [2023-11-28 23:51:58,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:59,183 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,185 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,186 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,187 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:59,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:59,277 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,278 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,279 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,280 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-28 23:51:59,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:59,345 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:59,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59 WrapperNode [2023-11-28 23:51:59,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:59,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:59,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:59,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:59,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,421 INFO L138 Inliner]: procedures = 279, calls = 56, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 377 [2023-11-28 23:51:59,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:59,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:59,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:59,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:59,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:59,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:59,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:59,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:59,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (1/1) ... [2023-11-28 23:51:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:59,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:59,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-28 23:51:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:51:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:51:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:51:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:51:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:51:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-28 23:51:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-28 23:51:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-28 23:51:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-28 23:51:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:59,559 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:51:59,714 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:59,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:52:00,285 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:52:00,319 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:52:00,319 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-28 23:52:00,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:52:00 BoogieIcfgContainer [2023-11-28 23:52:00,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:52:00,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:52:00,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:52:00,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:52:00,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:58" (1/3) ... [2023-11-28 23:52:00,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1e0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:52:00, skipping insertion in model container [2023-11-28 23:52:00,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:59" (2/3) ... [2023-11-28 23:52:00,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1e0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:52:00, skipping insertion in model container [2023-11-28 23:52:00,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:52:00" (3/3) ... [2023-11-28 23:52:00,331 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-11-28 23:52:00,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:52:00,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:52:00,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-28 23:52:00,381 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:52:00,521 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-28 23:52:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 421 transitions, 849 flow [2023-11-28 23:52:00,706 INFO L124 PetriNetUnfolderBase]: 29/446 cut-off events. [2023-11-28 23:52:00,706 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:52:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 446 events. 29/446 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 970 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 264. Up to 4 conditions per place. [2023-11-28 23:52:00,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 421 transitions, 849 flow [2023-11-28 23:52:00,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 421 transitions, 849 flow [2023-11-28 23:52:00,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:52:00,739 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;@4a922a3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:52:00,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-28 23:52:00,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:52:00,746 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2023-11-28 23:52:00,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:52:00,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:00,747 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] [2023-11-28 23:52:00,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 299044945, now seen corresponding path program 1 times [2023-11-28 23:52:00,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:00,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881511356] [2023-11-28 23:52:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881511356] [2023-11-28 23:52:01,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881511356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522718014] [2023-11-28 23:52:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:02,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 421 [2023-11-28 23:52:02,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 421 transitions, 849 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:02,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 421 [2023-11-28 23:52:02,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:02,573 INFO L124 PetriNetUnfolderBase]: 163/1011 cut-off events. [2023-11-28 23:52:02,573 INFO L125 PetriNetUnfolderBase]: For 7/11 co-relation queries the response was YES. [2023-11-28 23:52:02,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1011 events. 163/1011 cut-off events. For 7/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4733 event pairs, 144 based on Foata normal form. 140/1067 useless extension candidates. Maximal degree in co-relation 1079. Up to 390 conditions per place. [2023-11-28 23:52:02,583 INFO L140 encePairwiseOnDemand]: 388/421 looper letters, 92 selfloop transitions, 10 changer transitions 2/395 dead transitions. [2023-11-28 23:52:02,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 395 transitions, 1001 flow [2023-11-28 23:52:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1895 transitions. [2023-11-28 23:52:02,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7501979414093428 [2023-11-28 23:52:02,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1895 transitions. [2023-11-28 23:52:02,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1895 transitions. [2023-11-28 23:52:02,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:02,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1895 transitions. [2023-11-28 23:52:02,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,638 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,640 INFO L175 Difference]: Start difference. First operand has 397 places, 421 transitions, 849 flow. Second operand 6 states and 1895 transitions. [2023-11-28 23:52:02,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 395 transitions, 1001 flow [2023-11-28 23:52:02,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 395 transitions, 1001 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:52:02,658 INFO L231 Difference]: Finished difference. Result has 397 places, 393 transitions, 813 flow [2023-11-28 23:52:02,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=813, PETRI_PLACES=397, PETRI_TRANSITIONS=393} [2023-11-28 23:52:02,665 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-28 23:52:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 393 transitions, 813 flow [2023-11-28 23:52:02,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:02,667 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, 1] [2023-11-28 23:52:02,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:52:02,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:02,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash -392632889, now seen corresponding path program 1 times [2023-11-28 23:52:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:02,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352334804] [2023-11-28 23:52:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352334804] [2023-11-28 23:52:03,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352334804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082862785] [2023-11-28 23:52:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:03,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 421 [2023-11-28 23:52:03,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 393 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:03,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 421 [2023-11-28 23:52:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:03,907 INFO L124 PetriNetUnfolderBase]: 163/1007 cut-off events. [2023-11-28 23:52:03,907 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-28 23:52:03,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 1007 events. 163/1007 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4709 event pairs, 144 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1248. Up to 390 conditions per place. [2023-11-28 23:52:03,913 INFO L140 encePairwiseOnDemand]: 409/421 looper letters, 92 selfloop transitions, 10 changer transitions 0/391 dead transitions. [2023-11-28 23:52:03,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 391 transitions, 1013 flow [2023-11-28 23:52:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1874 transitions. [2023-11-28 23:52:03,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7418844022169437 [2023-11-28 23:52:03,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1874 transitions. [2023-11-28 23:52:03,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1874 transitions. [2023-11-28 23:52:03,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:03,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1874 transitions. [2023-11-28 23:52:03,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.3333333333333) internal successors, (1874), 6 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,932 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,933 INFO L175 Difference]: Start difference. First operand has 397 places, 393 transitions, 813 flow. Second operand 6 states and 1874 transitions. [2023-11-28 23:52:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 391 transitions, 1013 flow [2023-11-28 23:52:03,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 391 transitions, 993 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:03,943 INFO L231 Difference]: Finished difference. Result has 393 places, 391 transitions, 809 flow [2023-11-28 23:52:03,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=393, PETRI_TRANSITIONS=391} [2023-11-28 23:52:03,944 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -4 predicate places. [2023-11-28 23:52:03,944 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 391 transitions, 809 flow [2023-11-28 23:52:03,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:03,946 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, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:52:03,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:03,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash 384460638, now seen corresponding path program 1 times [2023-11-28 23:52:03,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229647280] [2023-11-28 23:52:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229647280] [2023-11-28 23:52:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229647280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502543226] [2023-11-28 23:52:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:04,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-28 23:52:04,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 391 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:04,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-28 23:52:04,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:04,124 INFO L124 PetriNetUnfolderBase]: 15/563 cut-off events. [2023-11-28 23:52:04,125 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-28 23:52:04,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 563 events. 15/563 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1472 event pairs, 8 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 404. Up to 34 conditions per place. [2023-11-28 23:52:04,128 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 15 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2023-11-28 23:52:04,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 392 transitions, 845 flow [2023-11-28 23:52:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-11-28 23:52:04,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9239904988123515 [2023-11-28 23:52:04,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-11-28 23:52:04,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-11-28 23:52:04,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-11-28 23:52:04,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,144 INFO L175 Difference]: Start difference. First operand has 393 places, 391 transitions, 809 flow. Second operand 3 states and 1167 transitions. [2023-11-28 23:52:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 392 transitions, 845 flow [2023-11-28 23:52:04,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 392 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:04,155 INFO L231 Difference]: Finished difference. Result has 391 places, 392 transitions, 801 flow [2023-11-28 23:52:04,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=391, PETRI_TRANSITIONS=392} [2023-11-28 23:52:04,157 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -6 predicate places. [2023-11-28 23:52:04,157 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 392 transitions, 801 flow [2023-11-28 23:52:04,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:04,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:04,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:52:04,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:04,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -610532648, now seen corresponding path program 1 times [2023-11-28 23:52:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:04,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85387328] [2023-11-28 23:52:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:04,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052528561] [2023-11-28 23:52:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:04,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:04,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:04,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:52:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:04,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:52:04,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:04,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:04,428 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 19 treesize of output 18 [2023-11-28 23:52:04,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:04,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-28 23:52:04,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:04,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-28 23:52:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:04,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85387328] [2023-11-28 23:52:04,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052528561] [2023-11-28 23:52:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052528561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:04,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:04,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:52:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685354513] [2023-11-28 23:52:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:05,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 421 [2023-11-28 23:52:05,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 392 transitions, 801 flow. Second operand has 8 states, 8 states have (on average 294.25) internal successors, (2354), 8 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:05,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 421 [2023-11-28 23:52:05,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:05,469 INFO L124 PetriNetUnfolderBase]: 164/1130 cut-off events. [2023-11-28 23:52:05,469 INFO L125 PetriNetUnfolderBase]: For 12/16 co-relation queries the response was YES. [2023-11-28 23:52:05,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 1130 events. 164/1130 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5129 event pairs, 144 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 1393. Up to 416 conditions per place. [2023-11-28 23:52:05,474 INFO L140 encePairwiseOnDemand]: 411/421 looper letters, 97 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2023-11-28 23:52:05,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 391 transitions, 1011 flow [2023-11-28 23:52:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:52:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:52:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2735 transitions. [2023-11-28 23:52:05,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7218263394035366 [2023-11-28 23:52:05,484 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2735 transitions. [2023-11-28 23:52:05,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2735 transitions. [2023-11-28 23:52:05,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:05,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2735 transitions. [2023-11-28 23:52:05,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 303.8888888888889) internal successors, (2735), 9 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,501 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,501 INFO L175 Difference]: Start difference. First operand has 391 places, 392 transitions, 801 flow. Second operand 9 states and 2735 transitions. [2023-11-28 23:52:05,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 391 transitions, 1011 flow [2023-11-28 23:52:05,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 391 transitions, 1009 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:05,508 INFO L231 Difference]: Finished difference. Result has 397 places, 391 transitions, 815 flow [2023-11-28 23:52:05,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=815, PETRI_PLACES=397, PETRI_TRANSITIONS=391} [2023-11-28 23:52:05,510 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-28 23:52:05,510 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 391 transitions, 815 flow [2023-11-28 23:52:05,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 294.25) internal successors, (2354), 8 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:05,512 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, 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] [2023-11-28 23:52:05,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:05,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:05,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1230342874, now seen corresponding path program 1 times [2023-11-28 23:52:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:05,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055203178] [2023-11-28 23:52:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055203178] [2023-11-28 23:52:05,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055203178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:05,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:05,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:05,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676752386] [2023-11-28 23:52:05,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:05,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:05,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-28 23:52:05,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 391 transitions, 815 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:05,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-28 23:52:05,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:05,950 INFO L124 PetriNetUnfolderBase]: 15/751 cut-off events. [2023-11-28 23:52:05,950 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-28 23:52:05,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 751 events. 15/751 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1665 event pairs, 8 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 617. Up to 38 conditions per place. [2023-11-28 23:52:05,954 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 15 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2023-11-28 23:52:05,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 392 transitions, 851 flow [2023-11-28 23:52:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-11-28 23:52:05,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9239904988123515 [2023-11-28 23:52:05,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-11-28 23:52:05,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-11-28 23:52:05,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-11-28 23:52:05,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,967 INFO L175 Difference]: Start difference. First operand has 397 places, 391 transitions, 815 flow. Second operand 3 states and 1167 transitions. [2023-11-28 23:52:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 392 transitions, 851 flow [2023-11-28 23:52:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 392 transitions, 833 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 23:52:05,977 INFO L231 Difference]: Finished difference. Result has 392 places, 392 transitions, 809 flow [2023-11-28 23:52:05,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=392, PETRI_TRANSITIONS=392} [2023-11-28 23:52:05,979 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -5 predicate places. [2023-11-28 23:52:05,979 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 392 transitions, 809 flow [2023-11-28 23:52:05,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:05,980 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:05,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:52:05,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:05,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -893732395, now seen corresponding path program 1 times [2023-11-28 23:52:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644876913] [2023-11-28 23:52:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:06,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:06,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626436273] [2023-11-28 23:52:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:06,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:06,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:06,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:52:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:06,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:52:06,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:06,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:06,202 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 23:52:06,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:06,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-28 23:52:06,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:06,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-28 23:52:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:06,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:06,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644876913] [2023-11-28 23:52:06,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626436273] [2023-11-28 23:52:06,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626436273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:06,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:06,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:06,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716925220] [2023-11-28 23:52:06,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:07,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 421 [2023-11-28 23:52:07,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 392 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:07,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 421 [2023-11-28 23:52:07,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:07,223 INFO L124 PetriNetUnfolderBase]: 7/723 cut-off events. [2023-11-28 23:52:07,223 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-28 23:52:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 723 events. 7/723 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1301 event pairs, 0 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 743. Up to 167 conditions per place. [2023-11-28 23:52:07,226 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 62 selfloop transitions, 5 changer transitions 0/391 dead transitions. [2023-11-28 23:52:07,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 391 transitions, 941 flow [2023-11-28 23:52:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-11-28 23:52:07,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8131433095803642 [2023-11-28 23:52:07,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-11-28 23:52:07,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-11-28 23:52:07,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:07,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-11-28 23:52:07,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,243 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,243 INFO L175 Difference]: Start difference. First operand has 392 places, 392 transitions, 809 flow. Second operand 6 states and 2054 transitions. [2023-11-28 23:52:07,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 391 transitions, 941 flow [2023-11-28 23:52:07,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 391 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:07,250 INFO L231 Difference]: Finished difference. Result has 395 places, 391 transitions, 815 flow [2023-11-28 23:52:07,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=395, PETRI_TRANSITIONS=391} [2023-11-28 23:52:07,252 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -2 predicate places. [2023-11-28 23:52:07,252 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 391 transitions, 815 flow [2023-11-28 23:52:07,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:07,253 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, 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, 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] [2023-11-28 23:52:07,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:52:07,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:52:07,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:07,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1528362954, now seen corresponding path program 1 times [2023-11-28 23:52:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:07,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632964539] [2023-11-28 23:52:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:07,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:07,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114847335] [2023-11-28 23:52:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:07,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:07,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:07,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:52:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:07,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:07,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:07,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-28 23:52:07,695 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-28 23:52:07,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:07,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-28 23:52:07,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:07,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-28 23:52:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:07,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632964539] [2023-11-28 23:52:07,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:07,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114847335] [2023-11-28 23:52:07,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114847335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:07,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:07,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37225979] [2023-11-28 23:52:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:08,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 421 [2023-11-28 23:52:08,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 391 transitions, 815 flow. Second operand has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:08,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 421 [2023-11-28 23:52:08,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:08,665 INFO L124 PetriNetUnfolderBase]: 164/1312 cut-off events. [2023-11-28 23:52:08,665 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-28 23:52:08,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 1312 events. 164/1312 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5591 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1434. Up to 504 conditions per place. [2023-11-28 23:52:08,673 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 99 selfloop transitions, 5 changer transitions 0/390 dead transitions. [2023-11-28 23:52:08,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1021 flow [2023-11-28 23:52:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2023-11-28 23:52:08,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7399049881235155 [2023-11-28 23:52:08,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2023-11-28 23:52:08,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2023-11-28 23:52:08,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:08,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2023-11-28 23:52:08,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,716 INFO L175 Difference]: Start difference. First operand has 395 places, 391 transitions, 815 flow. Second operand 6 states and 1869 transitions. [2023-11-28 23:52:08,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1021 flow [2023-11-28 23:52:08,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 390 transitions, 1011 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:08,726 INFO L231 Difference]: Finished difference. Result has 394 places, 390 transitions, 813 flow [2023-11-28 23:52:08,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=813, PETRI_PLACES=394, PETRI_TRANSITIONS=390} [2023-11-28 23:52:08,727 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -3 predicate places. [2023-11-28 23:52:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 390 transitions, 813 flow [2023-11-28 23:52:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:08,728 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, 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, 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] [2023-11-28 23:52:08,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:52:08,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 23:52:08,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:08,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash 359080098, now seen corresponding path program 1 times [2023-11-28 23:52:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901614088] [2023-11-28 23:52:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:08,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099686133] [2023-11-28 23:52:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:08,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:08,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:52:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:09,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:09,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:09,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:09,198 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 23:52:09,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:09,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-28 23:52:09,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:09,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-28 23:52:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:09,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:09,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901614088] [2023-11-28 23:52:09,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099686133] [2023-11-28 23:52:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099686133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876174662] [2023-11-28 23:52:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:09,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 421 [2023-11-28 23:52:09,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 390 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:09,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:09,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 421 [2023-11-28 23:52:09,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:09,909 INFO L124 PetriNetUnfolderBase]: 164/1308 cut-off events. [2023-11-28 23:52:09,909 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-28 23:52:09,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 1308 events. 164/1308 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5578 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1450. Up to 488 conditions per place. [2023-11-28 23:52:09,916 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 95 selfloop transitions, 5 changer transitions 0/389 dead transitions. [2023-11-28 23:52:09,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 389 transitions, 1011 flow [2023-11-28 23:52:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-11-28 23:52:09,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7478226444972288 [2023-11-28 23:52:09,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-11-28 23:52:09,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-11-28 23:52:09,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:09,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-11-28 23:52:09,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:09,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:09,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:09,934 INFO L175 Difference]: Start difference. First operand has 394 places, 390 transitions, 813 flow. Second operand 6 states and 1889 transitions. [2023-11-28 23:52:09,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 389 transitions, 1011 flow [2023-11-28 23:52:09,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 389 transitions, 1001 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:09,945 INFO L231 Difference]: Finished difference. Result has 393 places, 389 transitions, 811 flow [2023-11-28 23:52:09,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=811, PETRI_PLACES=393, PETRI_TRANSITIONS=389} [2023-11-28 23:52:09,946 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -4 predicate places. [2023-11-28 23:52:09,946 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 389 transitions, 811 flow [2023-11-28 23:52:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:09,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:09,947 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, 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, 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, 1, 1] [2023-11-28 23:52:09,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:52:10,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 23:52:10,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:10,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -159879217, now seen corresponding path program 1 times [2023-11-28 23:52:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:10,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055162506] [2023-11-28 23:52:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:10,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852105261] [2023-11-28 23:52:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:10,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:10,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:10,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:10,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:52:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:10,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:52:10,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:10,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-28 23:52:10,438 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-28 23:52:10,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:10,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-28 23:52:10,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:10,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-28 23:52:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:10,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055162506] [2023-11-28 23:52:10,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852105261] [2023-11-28 23:52:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852105261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:10,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680160720] [2023-11-28 23:52:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:10,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:10,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 421 [2023-11-28 23:52:10,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 389 transitions, 811 flow. Second operand has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:10,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:10,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 421 [2023-11-28 23:52:10,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:11,064 INFO L124 PetriNetUnfolderBase]: 164/1304 cut-off events. [2023-11-28 23:52:11,064 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-28 23:52:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1304 events. 164/1304 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5496 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1465. Up to 488 conditions per place. [2023-11-28 23:52:11,070 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 95 selfloop transitions, 5 changer transitions 0/388 dead transitions. [2023-11-28 23:52:11,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 388 transitions, 1009 flow [2023-11-28 23:52:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-11-28 23:52:11,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7478226444972288 [2023-11-28 23:52:11,074 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-11-28 23:52:11,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-11-28 23:52:11,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:11,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-11-28 23:52:11,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:11,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:11,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:11,083 INFO L175 Difference]: Start difference. First operand has 393 places, 389 transitions, 811 flow. Second operand 6 states and 1889 transitions. [2023-11-28 23:52:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 388 transitions, 1009 flow [2023-11-28 23:52:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 388 transitions, 999 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:11,090 INFO L231 Difference]: Finished difference. Result has 392 places, 388 transitions, 809 flow [2023-11-28 23:52:11,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=392, PETRI_TRANSITIONS=388} [2023-11-28 23:52:11,091 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -5 predicate places. [2023-11-28 23:52:11,092 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 388 transitions, 809 flow [2023-11-28 23:52:11,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:11,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:11,093 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:11,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:11,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:11,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -478380068, now seen corresponding path program 1 times [2023-11-28 23:52:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133142613] [2023-11-28 23:52:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:11,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:11,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067146629] [2023-11-28 23:52:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:11,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:11,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:11,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:11,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:52:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:11,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:52:11,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:11,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:11,581 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 23:52:11,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:11,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-28 23:52:11,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:11,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-28 23:52:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:11,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:11,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133142613] [2023-11-28 23:52:11,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067146629] [2023-11-28 23:52:11,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067146629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:11,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:11,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251899901] [2023-11-28 23:52:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:11,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:11,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 421 [2023-11-28 23:52:11,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 388 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:11,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:11,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 421 [2023-11-28 23:52:11,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:12,256 INFO L124 PetriNetUnfolderBase]: 164/1300 cut-off events. [2023-11-28 23:52:12,256 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-28 23:52:12,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1300 events. 164/1300 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5487 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1478. Up to 508 conditions per place. [2023-11-28 23:52:12,261 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 100 selfloop transitions, 5 changer transitions 0/387 dead transitions. [2023-11-28 23:52:12,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 1017 flow [2023-11-28 23:52:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2023-11-28 23:52:12,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379255740300871 [2023-11-28 23:52:12,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2023-11-28 23:52:12,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2023-11-28 23:52:12,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:12,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2023-11-28 23:52:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,272 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,273 INFO L175 Difference]: Start difference. First operand has 392 places, 388 transitions, 809 flow. Second operand 6 states and 1864 transitions. [2023-11-28 23:52:12,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 1017 flow [2023-11-28 23:52:12,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 1007 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:12,282 INFO L231 Difference]: Finished difference. Result has 391 places, 387 transitions, 807 flow [2023-11-28 23:52:12,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=391, PETRI_TRANSITIONS=387} [2023-11-28 23:52:12,283 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -6 predicate places. [2023-11-28 23:52:12,284 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 387 transitions, 807 flow [2023-11-28 23:52:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:12,285 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, 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, 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, 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, 1, 1, 1, 1, 1] [2023-11-28 23:52:12,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:52:12,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:52:12,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:12,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1574502272, now seen corresponding path program 1 times [2023-11-28 23:52:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:12,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466052405] [2023-11-28 23:52:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:12,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:12,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:12,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002229397] [2023-11-28 23:52:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:12,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:12,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:12,519 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:12,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:52:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:12,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:12,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:12,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466052405] [2023-11-28 23:52:12,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002229397] [2023-11-28 23:52:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002229397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:12,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:52:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764636926] [2023-11-28 23:52:12,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:12,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:12,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:12,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:13,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-28 23:52:13,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 387 transitions, 807 flow. Second operand has 8 states, 8 states have (on average 381.75) internal successors, (3054), 8 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:13,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:13,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-28 23:52:13,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:13,228 INFO L124 PetriNetUnfolderBase]: 15/917 cut-off events. [2023-11-28 23:52:13,228 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-28 23:52:13,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 917 events. 15/917 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1205 event pairs, 8 based on Foata normal form. 4/894 useless extension candidates. Maximal degree in co-relation 809. Up to 38 conditions per place. [2023-11-28 23:52:13,231 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 19 selfloop transitions, 9 changer transitions 0/395 dead transitions. [2023-11-28 23:52:13,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 395 transitions, 881 flow [2023-11-28 23:52:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:52:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:52:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3450 transitions. [2023-11-28 23:52:13,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9105304829770388 [2023-11-28 23:52:13,240 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3450 transitions. [2023-11-28 23:52:13,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3450 transitions. [2023-11-28 23:52:13,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:13,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3450 transitions. [2023-11-28 23:52:13,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 383.3333333333333) internal successors, (3450), 9 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:13,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:13,258 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:13,258 INFO L175 Difference]: Start difference. First operand has 391 places, 387 transitions, 807 flow. Second operand 9 states and 3450 transitions. [2023-11-28 23:52:13,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 395 transitions, 881 flow [2023-11-28 23:52:13,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 395 transitions, 871 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:13,295 INFO L231 Difference]: Finished difference. Result has 397 places, 393 transitions, 847 flow [2023-11-28 23:52:13,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=397, PETRI_TRANSITIONS=393} [2023-11-28 23:52:13,296 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-28 23:52:13,296 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 393 transitions, 847 flow [2023-11-28 23:52:13,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 381.75) internal successors, (3054), 8 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:13,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:13,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-11-28 23:52:13,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:52:13,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:13,498 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:13,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1583784128, now seen corresponding path program 2 times [2023-11-28 23:52:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27043394] [2023-11-28 23:52:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:13,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482112199] [2023-11-28 23:52:13,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:13,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:13,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:13,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:52:13,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:52:13,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:13,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:13,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:13,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-28 23:52:13,845 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-11-28 23:52:13,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:13,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2023-11-28 23:52:13,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:13,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2023-11-28 23:52:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-28 23:52:13,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27043394] [2023-11-28 23:52:13,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482112199] [2023-11-28 23:52:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482112199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795041375] [2023-11-28 23:52:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:14,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 421 [2023-11-28 23:52:14,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 393 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:14,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 421 [2023-11-28 23:52:14,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:14,876 INFO L124 PetriNetUnfolderBase]: 7/891 cut-off events. [2023-11-28 23:52:14,876 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-28 23:52:14,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 891 events. 7/891 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 848 event pairs, 0 based on Foata normal form. 0/871 useless extension candidates. Maximal degree in co-relation 988. Up to 214 conditions per place. [2023-11-28 23:52:14,878 INFO L140 encePairwiseOnDemand]: 409/421 looper letters, 65 selfloop transitions, 10 changer transitions 0/391 dead transitions. [2023-11-28 23:52:14,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 391 transitions, 993 flow [2023-11-28 23:52:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2009 transitions. [2023-11-28 23:52:14,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7953285827395091 [2023-11-28 23:52:14,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2009 transitions. [2023-11-28 23:52:14,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2009 transitions. [2023-11-28 23:52:14,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:14,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2009 transitions. [2023-11-28 23:52:14,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.8333333333333) internal successors, (2009), 6 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,892 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,892 INFO L175 Difference]: Start difference. First operand has 397 places, 393 transitions, 847 flow. Second operand 6 states and 2009 transitions. [2023-11-28 23:52:14,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 391 transitions, 993 flow [2023-11-28 23:52:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 391 transitions, 987 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:14,899 INFO L231 Difference]: Finished difference. Result has 399 places, 391 transitions, 857 flow [2023-11-28 23:52:14,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=399, PETRI_TRANSITIONS=391} [2023-11-28 23:52:14,899 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 2 predicate places. [2023-11-28 23:52:14,900 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 391 transitions, 857 flow [2023-11-28 23:52:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:14,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2023-11-28 23:52:14,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:15,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:15,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1856895001, now seen corresponding path program 1 times [2023-11-28 23:52:15,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:15,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640779622] [2023-11-28 23:52:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:15,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:15,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924329630] [2023-11-28 23:52:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:15,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:15,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:15,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:52:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:15,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:52:15,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:15,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640779622] [2023-11-28 23:52:16,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:16,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924329630] [2023-11-28 23:52:16,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924329630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:16,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:16,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-28 23:52:16,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822914120] [2023-11-28 23:52:16,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:52:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:52:16,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:52:16,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-28 23:52:16,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 391 transitions, 857 flow. Second operand has 16 states, 16 states have (on average 381.875) internal successors, (6110), 16 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:16,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-28 23:52:16,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:16,809 INFO L124 PetriNetUnfolderBase]: 15/1643 cut-off events. [2023-11-28 23:52:16,809 INFO L125 PetriNetUnfolderBase]: For 55/56 co-relation queries the response was YES. [2023-11-28 23:52:16,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1643 events. 15/1643 cut-off events. For 55/56 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 8 based on Foata normal form. 8/1626 useless extension candidates. Maximal degree in co-relation 1629. Up to 38 conditions per place. [2023-11-28 23:52:16,814 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 23 selfloop transitions, 21 changer transitions 0/409 dead transitions. [2023-11-28 23:52:16,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 409 transitions, 1033 flow [2023-11-28 23:52:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:52:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:52:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8028 transitions. [2023-11-28 23:52:16,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9080420766881574 [2023-11-28 23:52:16,833 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8028 transitions. [2023-11-28 23:52:16,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8028 transitions. [2023-11-28 23:52:16,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:16,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8028 transitions. [2023-11-28 23:52:16,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 382.2857142857143) internal successors, (8028), 21 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,883 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,883 INFO L175 Difference]: Start difference. First operand has 399 places, 391 transitions, 857 flow. Second operand 21 states and 8028 transitions. [2023-11-28 23:52:16,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 409 transitions, 1033 flow [2023-11-28 23:52:16,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 409 transitions, 1013 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:16,890 INFO L231 Difference]: Finished difference. Result has 419 places, 404 transitions, 967 flow [2023-11-28 23:52:16,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=967, PETRI_PLACES=419, PETRI_TRANSITIONS=404} [2023-11-28 23:52:16,891 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 22 predicate places. [2023-11-28 23:52:16,891 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 404 transitions, 967 flow [2023-11-28 23:52:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 381.875) internal successors, (6110), 16 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:16,893 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2023-11-28 23:52:16,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:52:17,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:17,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:17,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1460041881, now seen corresponding path program 2 times [2023-11-28 23:52:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890031093] [2023-11-28 23:52:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:17,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:17,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347306415] [2023-11-28 23:52:17,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:17,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:17,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:17,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:17,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:52:17,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:52:17,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:17,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:17,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:17,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:17,645 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 23:52:17,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:17,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-28 23:52:17,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:17,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-28 23:52:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2023-11-28 23:52:17,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890031093] [2023-11-28 23:52:17,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347306415] [2023-11-28 23:52:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347306415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:17,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:17,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246455736] [2023-11-28 23:52:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:18,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 421 [2023-11-28 23:52:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 404 transitions, 967 flow. Second operand has 6 states, 6 states have (on average 338.3333333333333) internal successors, (2030), 6 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 421 [2023-11-28 23:52:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:18,849 INFO L124 PetriNetUnfolderBase]: 26/1705 cut-off events. [2023-11-28 23:52:18,849 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2023-11-28 23:52:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1705 events. 26/1705 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1632 event pairs, 16 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2047. Up to 471 conditions per place. [2023-11-28 23:52:18,853 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 62 selfloop transitions, 5 changer transitions 0/403 dead transitions. [2023-11-28 23:52:18,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 403 transitions, 1099 flow [2023-11-28 23:52:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-11-28 23:52:18,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8131433095803642 [2023-11-28 23:52:18,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-11-28 23:52:18,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-11-28 23:52:18,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:18,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-11-28 23:52:18,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,865 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,865 INFO L175 Difference]: Start difference. First operand has 419 places, 404 transitions, 967 flow. Second operand 6 states and 2054 transitions. [2023-11-28 23:52:18,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 403 transitions, 1099 flow [2023-11-28 23:52:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 403 transitions, 1075 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-28 23:52:18,872 INFO L231 Difference]: Finished difference. Result has 417 places, 403 transitions, 951 flow [2023-11-28 23:52:18,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=951, PETRI_PLACES=417, PETRI_TRANSITIONS=403} [2023-11-28 23:52:18,873 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 20 predicate places. [2023-11-28 23:52:18,873 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 403 transitions, 951 flow [2023-11-28 23:52:18,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.3333333333333) internal successors, (2030), 6 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:18,873 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1] [2023-11-28 23:52:18,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:52:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:52:19,074 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:19,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 805919436, now seen corresponding path program 1 times [2023-11-28 23:52:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:19,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601342741] [2023-11-28 23:52:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:19,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891632901] [2023-11-28 23:52:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:19,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:19,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:19,188 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:19,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:52:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:19,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:52:19,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:20,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601342741] [2023-11-28 23:52:21,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891632901] [2023-11-28 23:52:21,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891632901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:21,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:21,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-28 23:52:21,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800472127] [2023-11-28 23:52:21,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:21,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-28 23:52:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:21,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-28 23:52:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-28 23:52:21,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-28 23:52:21,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 403 transitions, 951 flow. Second operand has 32 states, 32 states have (on average 381.9375) internal successors, (12222), 32 states have internal predecessors, (12222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:21,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:21,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-28 23:52:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:22,874 INFO L124 PetriNetUnfolderBase]: 15/3098 cut-off events. [2023-11-28 23:52:22,874 INFO L125 PetriNetUnfolderBase]: For 571/572 co-relation queries the response was YES. [2023-11-28 23:52:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 3098 events. 15/3098 cut-off events. For 571/572 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 8 based on Foata normal form. 16/3090 useless extension candidates. Maximal degree in co-relation 3369. Up to 52 conditions per place. [2023-11-28 23:52:22,880 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 31 selfloop transitions, 45 changer transitions 0/440 dead transitions. [2023-11-28 23:52:22,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 440 transitions, 1375 flow [2023-11-28 23:52:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-28 23:52:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-28 23:52:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 17184 transitions. [2023-11-28 23:52:22,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.907046714172605 [2023-11-28 23:52:22,894 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 17184 transitions. [2023-11-28 23:52:22,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 17184 transitions. [2023-11-28 23:52:22,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:22,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 17184 transitions. [2023-11-28 23:52:22,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 381.8666666666667) internal successors, (17184), 45 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:22,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 421.0) internal successors, (19366), 46 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:22,945 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 421.0) internal successors, (19366), 46 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:22,946 INFO L175 Difference]: Start difference. First operand has 417 places, 403 transitions, 951 flow. Second operand 45 states and 17184 transitions. [2023-11-28 23:52:22,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 440 transitions, 1375 flow [2023-11-28 23:52:22,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 440 transitions, 1365 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:22,957 INFO L231 Difference]: Finished difference. Result has 465 places, 428 transitions, 1243 flow [2023-11-28 23:52:22,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1243, PETRI_PLACES=465, PETRI_TRANSITIONS=428} [2023-11-28 23:52:22,958 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 68 predicate places. [2023-11-28 23:52:22,959 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 428 transitions, 1243 flow [2023-11-28 23:52:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 381.9375) internal successors, (12222), 32 states have internal predecessors, (12222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:22,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:22,961 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 1, 1, 1, 1] [2023-11-28 23:52:22,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:52:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:52:23,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:23,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 250428364, now seen corresponding path program 2 times [2023-11-28 23:52:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129987393] [2023-11-28 23:52:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:23,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622777560] [2023-11-28 23:52:23,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:23,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:23,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:23,516 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:52:24,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:52:24,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:24,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:24,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:24,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 23:52:24,343 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 23:52:24,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:24,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-28 23:52:24,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:24,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-28 23:52:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-28 23:52:24,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:24,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129987393] [2023-11-28 23:52:24,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622777560] [2023-11-28 23:52:24,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622777560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:24,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:24,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570474401] [2023-11-28 23:52:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:24,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:24,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 421 [2023-11-28 23:52:24,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 428 transitions, 1243 flow. Second operand has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:24,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:24,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 421 [2023-11-28 23:52:24,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:26,521 INFO L124 PetriNetUnfolderBase]: 203/3815 cut-off events. [2023-11-28 23:52:26,522 INFO L125 PetriNetUnfolderBase]: For 468/473 co-relation queries the response was YES. [2023-11-28 23:52:26,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5721 conditions, 3815 events. 203/3815 cut-off events. For 468/473 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6955 event pairs, 180 based on Foata normal form. 0/3735 useless extension candidates. Maximal degree in co-relation 4382. Up to 1408 conditions per place. [2023-11-28 23:52:26,532 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 100 selfloop transitions, 5 changer transitions 0/427 dead transitions. [2023-11-28 23:52:26,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 427 transitions, 1451 flow [2023-11-28 23:52:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2023-11-28 23:52:26,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379255740300871 [2023-11-28 23:52:26,536 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2023-11-28 23:52:26,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2023-11-28 23:52:26,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:26,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2023-11-28 23:52:26,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:26,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:26,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:26,540 INFO L175 Difference]: Start difference. First operand has 465 places, 428 transitions, 1243 flow. Second operand 6 states and 1864 transitions. [2023-11-28 23:52:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 427 transitions, 1451 flow [2023-11-28 23:52:26,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 427 transitions, 1395 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-28 23:52:26,551 INFO L231 Difference]: Finished difference. Result has 451 places, 427 transitions, 1195 flow [2023-11-28 23:52:26,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=451, PETRI_TRANSITIONS=427} [2023-11-28 23:52:26,552 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 54 predicate places. [2023-11-28 23:52:26,552 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 427 transitions, 1195 flow [2023-11-28 23:52:26,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:26,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:26,554 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:26,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:52:26,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:52:26,754 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:26,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1780922273, now seen corresponding path program 1 times [2023-11-28 23:52:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795725021] [2023-11-28 23:52:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:26,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:26,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589896823] [2023-11-28 23:52:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:26,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:26,955 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:26,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:52:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:28,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 5936 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:52:28,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-28 23:52:28,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:28,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:28,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795725021] [2023-11-28 23:52:28,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:28,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589896823] [2023-11-28 23:52:28,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589896823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:28,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821391755] [2023-11-28 23:52:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:28,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:28,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-28 23:52:28,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 427 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:28,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:28,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-28 23:52:28,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:29,800 INFO L124 PetriNetUnfolderBase]: 38/3310 cut-off events. [2023-11-28 23:52:29,800 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2023-11-28 23:52:29,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 3310 events. 38/3310 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2730 event pairs, 0 based on Foata normal form. 2/3262 useless extension candidates. Maximal degree in co-relation 3311. Up to 72 conditions per place. [2023-11-28 23:52:29,810 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 22 selfloop transitions, 2 changer transitions 0/435 dead transitions. [2023-11-28 23:52:29,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 435 transitions, 1259 flow [2023-11-28 23:52:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1174 transitions. [2023-11-28 23:52:29,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9295328582739509 [2023-11-28 23:52:29,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1174 transitions. [2023-11-28 23:52:29,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1174 transitions. [2023-11-28 23:52:29,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:29,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1174 transitions. [2023-11-28 23:52:29,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:29,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:29,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:29,814 INFO L175 Difference]: Start difference. First operand has 451 places, 427 transitions, 1195 flow. Second operand 3 states and 1174 transitions. [2023-11-28 23:52:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 435 transitions, 1259 flow [2023-11-28 23:52:29,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 435 transitions, 1249 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:52:29,824 INFO L231 Difference]: Finished difference. Result has 449 places, 427 transitions, 1193 flow [2023-11-28 23:52:29,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1193, PETRI_PLACES=449, PETRI_TRANSITIONS=427} [2023-11-28 23:52:29,825 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 52 predicate places. [2023-11-28 23:52:29,825 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 427 transitions, 1193 flow [2023-11-28 23:52:29,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:29,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:29,826 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:29,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:52:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:52:30,026 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1779821155, now seen corresponding path program 1 times [2023-11-28 23:52:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188924957] [2023-11-28 23:52:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:30,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:30,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302868305] [2023-11-28 23:52:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:30,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:30,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:30,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:52:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:31,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 5960 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 23:52:31,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:52:33,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:52:35,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:35,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188924957] [2023-11-28 23:52:35,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:35,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302868305] [2023-11-28 23:52:35,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302868305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:35,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:35,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-28 23:52:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537586236] [2023-11-28 23:52:35,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:35,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-28 23:52:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-28 23:52:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-28 23:52:35,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-28 23:52:35,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 427 transitions, 1193 flow. Second operand has 61 states, 61 states have (on average 382.0163934426229) internal successors, (23303), 61 states have internal predecessors, (23303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:35,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:35,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-28 23:52:35,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:39,938 INFO L124 PetriNetUnfolderBase]: 14/5824 cut-off events. [2023-11-28 23:52:39,938 INFO L125 PetriNetUnfolderBase]: For 4314/4315 co-relation queries the response was YES. [2023-11-28 23:52:39,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7024 conditions, 5824 events. 14/5824 cut-off events. For 4314/4315 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1234 event pairs, 8 based on Foata normal form. 30/5834 useless extension candidates. Maximal degree in co-relation 6764. Up to 112 conditions per place. [2023-11-28 23:52:39,946 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 46 selfloop transitions, 90 changer transitions 0/499 dead transitions. [2023-11-28 23:52:39,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 499 transitions, 2181 flow [2023-11-28 23:52:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-28 23:52:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-11-28 23:52:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 34351 transitions. [2023-11-28 23:52:40,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9065980469780944 [2023-11-28 23:52:40,020 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 34351 transitions. [2023-11-28 23:52:40,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 34351 transitions. [2023-11-28 23:52:40,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:40,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 34351 transitions. [2023-11-28 23:52:40,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 381.6777777777778) internal successors, (34351), 90 states have internal predecessors, (34351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:40,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 421.0) internal successors, (38311), 91 states have internal predecessors, (38311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:40,099 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 421.0) internal successors, (38311), 91 states have internal predecessors, (38311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:40,099 INFO L175 Difference]: Start difference. First operand has 449 places, 427 transitions, 1193 flow. Second operand 90 states and 34351 transitions. [2023-11-28 23:52:40,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 499 transitions, 2181 flow [2023-11-28 23:52:40,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 499 transitions, 2177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:40,112 INFO L231 Difference]: Finished difference. Result has 552 places, 473 transitions, 1843 flow [2023-11-28 23:52:40,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1843, PETRI_PLACES=552, PETRI_TRANSITIONS=473} [2023-11-28 23:52:40,113 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 155 predicate places. [2023-11-28 23:52:40,113 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 473 transitions, 1843 flow [2023-11-28 23:52:40,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 382.0163934426229) internal successors, (23303), 61 states have internal predecessors, (23303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:40,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:40,116 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:40,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:52:40,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:52:40,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:40,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1824859703, now seen corresponding path program 2 times [2023-11-28 23:52:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880548576] [2023-11-28 23:52:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:40,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591713221] [2023-11-28 23:52:40,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:40,655 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:40,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:52:43,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:52:43,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:43,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 11495 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:44,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2023-11-28 23:52:47,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2023-11-28 23:52:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880548576] [2023-11-28 23:52:50,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591713221] [2023-11-28 23:52:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591713221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:50,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:50,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:52:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147127310] [2023-11-28 23:52:50,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:50,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:50,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:50,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-28 23:52:50,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 473 transitions, 1843 flow. Second operand has 8 states, 8 states have (on average 381.875) internal successors, (3055), 8 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:50,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:50,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-28 23:52:50,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:57,306 INFO L124 PetriNetUnfolderBase]: 15/8586 cut-off events. [2023-11-28 23:52:57,306 INFO L125 PetriNetUnfolderBase]: For 2982/2983 co-relation queries the response was YES. [2023-11-28 23:52:57,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 8586 events. 15/8586 cut-off events. For 2982/2983 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 635 event pairs, 8 based on Foata normal form. 2/8568 useless extension candidates. Maximal degree in co-relation 10155. Up to 168 conditions per place. [2023-11-28 23:52:57,317 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 19 selfloop transitions, 9 changer transitions 0/481 dead transitions. [2023-11-28 23:52:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 481 transitions, 1917 flow [2023-11-28 23:52:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:52:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:52:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3450 transitions. [2023-11-28 23:52:57,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9105304829770388 [2023-11-28 23:52:57,321 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3450 transitions. [2023-11-28 23:52:57,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3450 transitions. [2023-11-28 23:52:57,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:57,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3450 transitions. [2023-11-28 23:52:57,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 383.3333333333333) internal successors, (3450), 9 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:57,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:57,326 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:57,326 INFO L175 Difference]: Start difference. First operand has 552 places, 473 transitions, 1843 flow. Second operand 9 states and 3450 transitions. [2023-11-28 23:52:57,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 481 transitions, 1917 flow [2023-11-28 23:52:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 481 transitions, 1799 flow, removed 17 selfloop flow, removed 42 redundant places. [2023-11-28 23:52:57,352 INFO L231 Difference]: Finished difference. Result has 521 places, 479 transitions, 1775 flow [2023-11-28 23:52:57,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1775, PETRI_PLACES=521, PETRI_TRANSITIONS=479} [2023-11-28 23:52:57,353 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 124 predicate places. [2023-11-28 23:52:57,353 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 479 transitions, 1775 flow [2023-11-28 23:52:57,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 381.875) internal successors, (3055), 8 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:57,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:57,356 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 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] [2023-11-28 23:52:57,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:52:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:57,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-28 23:52:57,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1951494857, now seen corresponding path program 3 times [2023-11-28 23:52:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400699218] [2023-11-28 23:52:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:58,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463575639] [2023-11-28 23:52:58,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:52:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:58,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:58,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:04:52,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 00:04:52,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:04:52,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:04:52,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:05:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 364820 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2023-11-29 00:05:00,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:05:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 364820 backedges. 0 proven. 245970 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2023-11-29 00:05:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:05:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400699218] [2023-11-29 00:05:08,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:05:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463575639] [2023-11-29 00:05:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463575639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:05:08,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:05:08,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:05:08,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758105985] [2023-11-29 00:05:08,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:05:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:05:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:05:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:05:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:05:08,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-29 00:05:08,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 479 transitions, 1775 flow. Second operand has 16 states, 16 states have (on average 381.9375) internal successors, (6111), 16 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:08,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:05:08,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-29 00:05:08,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:05:44,044 INFO L124 PetriNetUnfolderBase]: 19/19626 cut-off events. [2023-11-29 00:05:44,044 INFO L125 PetriNetUnfolderBase]: For 7427/7428 co-relation queries the response was YES. [2023-11-29 00:05:44,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23455 conditions, 19626 events. 19/19626 cut-off events. For 7427/7428 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 639 event pairs, 8 based on Foata normal form. 4/19610 useless extension candidates. Maximal degree in co-relation 23178. Up to 392 conditions per place. [2023-11-29 00:05:44,080 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 23 selfloop transitions, 21 changer transitions 0/497 dead transitions. [2023-11-29 00:05:44,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 497 transitions, 1959 flow [2023-11-29 00:05:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:05:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:05:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8028 transitions. [2023-11-29 00:05:44,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9080420766881574 [2023-11-29 00:05:44,087 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8028 transitions. [2023-11-29 00:05:44,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8028 transitions. [2023-11-29 00:05:44,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:05:44,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8028 transitions. [2023-11-29 00:05:44,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 382.2857142857143) internal successors, (8028), 21 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:44,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:44,099 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:44,099 INFO L175 Difference]: Start difference. First operand has 521 places, 479 transitions, 1775 flow. Second operand 21 states and 8028 transitions. [2023-11-29 00:05:44,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 497 transitions, 1959 flow [2023-11-29 00:05:44,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 497 transitions, 1945 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 00:05:44,133 INFO L231 Difference]: Finished difference. Result has 545 places, 492 transitions, 1899 flow [2023-11-29 00:05:44,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1899, PETRI_PLACES=545, PETRI_TRANSITIONS=492} [2023-11-29 00:05:44,134 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 148 predicate places. [2023-11-29 00:05:44,135 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 492 transitions, 1899 flow [2023-11-29 00:05:44,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 381.9375) internal successors, (6111), 16 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:44,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:05:44,144 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 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, 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, 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] [2023-11-29 00:05:44,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:05:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:44,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-29 00:05:44,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:05:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 159423287, now seen corresponding path program 4 times [2023-11-29 00:05:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:05:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277237142] [2023-11-29 00:05:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:05:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:05:46,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:05:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889678903] [2023-11-29 00:05:46,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:05:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:05:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:05:46,987 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:05:46,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5919f8c-4718-44a4-bdc8-f53c3c05372d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:06:05,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:06:05,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:06:05,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 73956 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:06:05,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1999086 backedges. 0 proven. 1721776 refuted. 0 times theorem prover too weak. 277310 trivial. 0 not checked. [2023-11-29 00:06:24,071 INFO L327 TraceCheckSpWp]: Computing backward predicates...