./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:39,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:39,306 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:55:39,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:39,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:39,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:39,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:39,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:39,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:39,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:39,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:39,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:39,375 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:39,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:39,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:39,378 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:39,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:39,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:39,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:39,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:39,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:39,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:39,382 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:55:39,383 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:55:39,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:39,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:39,384 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:39,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:39,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:39,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:39,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:39,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:39,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:39,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:39,391 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:39,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:39,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:39,392 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:39,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:39,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:39,393 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:39,393 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_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-19 07:55:39,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:39,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:39,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:39,845 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:39,845 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:39,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-19 07:55:43,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:43,480 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:43,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-19 07:55:43,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/data/8b13aebfd/102e4187008d413b9845bff4481b4ce6/FLAG546ff693d [2023-11-19 07:55:43,510 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/data/8b13aebfd/102e4187008d413b9845bff4481b4ce6 [2023-11-19 07:55:43,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:43,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:43,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:43,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:43,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:43,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4d0334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43, skipping insertion in model container [2023-11-19 07:55:43,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,562 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:43,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:43,880 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:43,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:43,958 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:43,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43 WrapperNode [2023-11-19 07:55:43,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:43,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:43,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:43,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:43,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,053 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 561 [2023-11-19 07:55:44,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:44,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:44,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:44,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:44,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:44,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:44,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:44,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:44,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:44,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:44,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:44,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:55:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:55:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:55:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:55:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:55:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:55:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:55:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:55:44,271 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:55:44,495 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:44,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:45,734 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:45,763 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:45,764 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:55:45,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:45 BoogieIcfgContainer [2023-11-19 07:55:45,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:45,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:45,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:45,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:45,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:43" (1/3) ... [2023-11-19 07:55:45,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52682135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:45, skipping insertion in model container [2023-11-19 07:55:45,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (2/3) ... [2023-11-19 07:55:45,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52682135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:45, skipping insertion in model container [2023-11-19 07:55:45,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:45" (3/3) ... [2023-11-19 07:55:45,789 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-19 07:55:45,801 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:55:45,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:45,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-19 07:55:45,812 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:55:46,044 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:55:46,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 709 places, 735 transitions, 1484 flow [2023-11-19 07:55:46,570 INFO L124 PetriNetUnfolderBase]: 33/733 cut-off events. [2023-11-19 07:55:46,570 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:55:46,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 733 events. 33/733 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1168 event pairs, 0 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 519. Up to 2 conditions per place. [2023-11-19 07:55:46,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 709 places, 735 transitions, 1484 flow [2023-11-19 07:55:46,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 683 places, 707 transitions, 1426 flow [2023-11-19 07:55:46,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:46,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 683 places, 707 transitions, 1426 flow [2023-11-19 07:55:46,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 683 places, 707 transitions, 1426 flow [2023-11-19 07:55:46,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 683 places, 707 transitions, 1426 flow [2023-11-19 07:55:47,055 INFO L124 PetriNetUnfolderBase]: 31/707 cut-off events. [2023-11-19 07:55:47,055 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:55:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 707 events. 31/707 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1157 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 519. Up to 2 conditions per place. [2023-11-19 07:55:47,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 56916 [2023-11-19 07:56:07,644 INFO L134 LiptonReduction]: Checked pairs total: 377013 [2023-11-19 07:56:07,645 INFO L136 LiptonReduction]: Total number of compositions: 716 [2023-11-19 07:56:07,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:07,671 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;@4b542313, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:07,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2023-11-19 07:56:07,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:07,674 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:56:07,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:07,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:07,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:56:07,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:07,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2636, now seen corresponding path program 1 times [2023-11-19 07:56:07,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563555552] [2023-11-19 07:56:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:07,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563555552] [2023-11-19 07:56:07,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563555552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:07,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:56:07,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477013403] [2023-11-19 07:56:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:07,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:07,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:07,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:07,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1451 [2023-11-19 07:56:07,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 212 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 710.5) internal successors, (1421), 2 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:07,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:07,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1451 [2023-11-19 07:56:07,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:08,610 INFO L124 PetriNetUnfolderBase]: 737/3352 cut-off events. [2023-11-19 07:56:08,611 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-19 07:56:08,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 3352 events. 737/3352 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 28856 event pairs, 609 based on Foata normal form. 108/2808 useless extension candidates. Maximal degree in co-relation 4338. Up to 1210 conditions per place. [2023-11-19 07:56:08,641 INFO L140 encePairwiseOnDemand]: 1410/1451 looper letters, 46 selfloop transitions, 0 changer transitions 1/171 dead transitions. [2023-11-19 07:56:08,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 171 transitions, 448 flow [2023-11-19 07:56:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:56:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1508 transitions. [2023-11-19 07:56:08,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196416264645073 [2023-11-19 07:56:08,664 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1508 transitions. [2023-11-19 07:56:08,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1508 transitions. [2023-11-19 07:56:08,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:08,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1508 transitions. [2023-11-19 07:56:08,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 754.0) internal successors, (1508), 2 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:08,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1451.0) internal successors, (4353), 3 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:08,697 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1451.0) internal successors, (4353), 3 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:08,699 INFO L175 Difference]: Start difference. First operand has 211 places, 212 transitions, 436 flow. Second operand 2 states and 1508 transitions. [2023-11-19 07:56:08,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 171 transitions, 448 flow [2023-11-19 07:56:08,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 440 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:08,715 INFO L231 Difference]: Finished difference. Result has 167 places, 170 transitions, 343 flow [2023-11-19 07:56:08,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=343, PETRI_PLACES=167, PETRI_TRANSITIONS=170} [2023-11-19 07:56:08,723 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -44 predicate places. [2023-11-19 07:56:08,724 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 170 transitions, 343 flow [2023-11-19 07:56:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 710.5) internal successors, (1421), 2 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:08,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:08,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:08,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:08,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2109495366, now seen corresponding path program 1 times [2023-11-19 07:56:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956895283] [2023-11-19 07:56:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:09,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956895283] [2023-11-19 07:56:09,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956895283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:09,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:09,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:09,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884310230] [2023-11-19 07:56:09,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:09,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 697 out of 1451 [2023-11-19 07:56:09,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 170 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 3 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:09,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:09,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 697 of 1451 [2023-11-19 07:56:09,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:09,771 INFO L124 PetriNetUnfolderBase]: 985/3934 cut-off events. [2023-11-19 07:56:09,771 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:56:09,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5570 conditions, 3934 events. 985/3934 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 33591 event pairs, 419 based on Foata normal form. 0/3282 useless extension candidates. Maximal degree in co-relation 5567. Up to 1596 conditions per place. [2023-11-19 07:56:09,805 INFO L140 encePairwiseOnDemand]: 1445/1451 looper letters, 57 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2023-11-19 07:56:09,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 174 transitions, 470 flow [2023-11-19 07:56:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2154 transitions. [2023-11-19 07:56:09,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948311509303928 [2023-11-19 07:56:09,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2154 transitions. [2023-11-19 07:56:09,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2154 transitions. [2023-11-19 07:56:09,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:09,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2154 transitions. [2023-11-19 07:56:09,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:09,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:09,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:09,841 INFO L175 Difference]: Start difference. First operand has 167 places, 170 transitions, 343 flow. Second operand 3 states and 2154 transitions. [2023-11-19 07:56:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 174 transitions, 470 flow [2023-11-19 07:56:09,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 174 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:09,847 INFO L231 Difference]: Finished difference. Result has 165 places, 168 transitions, 349 flow [2023-11-19 07:56:09,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=165, PETRI_TRANSITIONS=168} [2023-11-19 07:56:09,849 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -46 predicate places. [2023-11-19 07:56:09,849 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 168 transitions, 349 flow [2023-11-19 07:56:09,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 3 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:09,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:09,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:09,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:09,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:09,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash 535656, now seen corresponding path program 1 times [2023-11-19 07:56:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:09,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607134387] [2023-11-19 07:56:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:09,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607134387] [2023-11-19 07:56:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607134387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231288391] [2023-11-19 07:56:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:09,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:09,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1451 [2023-11-19 07:56:10,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 168 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 682.0) internal successors, (2046), 3 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:10,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:10,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1451 [2023-11-19 07:56:10,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:10,757 INFO L124 PetriNetUnfolderBase]: 1299/4568 cut-off events. [2023-11-19 07:56:10,757 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-19 07:56:10,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6823 conditions, 4568 events. 1299/4568 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38219 event pairs, 1097 based on Foata normal form. 0/3938 useless extension candidates. Maximal degree in co-relation 6819. Up to 2138 conditions per place. [2023-11-19 07:56:10,854 INFO L140 encePairwiseOnDemand]: 1444/1451 looper letters, 57 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2023-11-19 07:56:10,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 162 transitions, 453 flow [2023-11-19 07:56:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2099 transitions. [2023-11-19 07:56:10,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48219618653801977 [2023-11-19 07:56:10,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2099 transitions. [2023-11-19 07:56:10,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2099 transitions. [2023-11-19 07:56:10,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2099 transitions. [2023-11-19 07:56:10,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 3 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:10,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:10,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:10,899 INFO L175 Difference]: Start difference. First operand has 165 places, 168 transitions, 349 flow. Second operand 3 states and 2099 transitions. [2023-11-19 07:56:10,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 162 transitions, 453 flow [2023-11-19 07:56:10,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 162 transitions, 453 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:10,907 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 339 flow [2023-11-19 07:56:10,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-11-19 07:56:10,912 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -50 predicate places. [2023-11-19 07:56:10,912 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 339 flow [2023-11-19 07:56:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 682.0) internal successors, (2046), 3 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:10,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:10,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:10,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:10,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 8196402, now seen corresponding path program 1 times [2023-11-19 07:56:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257685232] [2023-11-19 07:56:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257685232] [2023-11-19 07:56:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257685232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:11,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045890067] [2023-11-19 07:56:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:11,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 697 out of 1451 [2023-11-19 07:56:11,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 700.3333333333334) internal successors, (2101), 3 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:11,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 697 of 1451 [2023-11-19 07:56:11,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:11,887 INFO L124 PetriNetUnfolderBase]: 1000/3720 cut-off events. [2023-11-19 07:56:11,887 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-19 07:56:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 3720 events. 1000/3720 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 30752 event pairs, 482 based on Foata normal form. 0/3212 useless extension candidates. Maximal degree in co-relation 5466. Up to 1616 conditions per place. [2023-11-19 07:56:11,924 INFO L140 encePairwiseOnDemand]: 1445/1451 looper letters, 58 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2023-11-19 07:56:11,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 165 transitions, 469 flow [2023-11-19 07:56:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2153 transitions. [2023-11-19 07:56:11,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494601424305077 [2023-11-19 07:56:11,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2153 transitions. [2023-11-19 07:56:11,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2153 transitions. [2023-11-19 07:56:11,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:11,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2153 transitions. [2023-11-19 07:56:11,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,965 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 339 flow. Second operand 3 states and 2153 transitions. [2023-11-19 07:56:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 165 transitions, 469 flow [2023-11-19 07:56:11,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:11,971 INFO L231 Difference]: Finished difference. Result has 159 places, 160 transitions, 344 flow [2023-11-19 07:56:11,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=160} [2023-11-19 07:56:11,973 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -52 predicate places. [2023-11-19 07:56:11,973 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 160 transitions, 344 flow [2023-11-19 07:56:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 700.3333333333334) internal successors, (2101), 3 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:11,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:11,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:11,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:11,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -713134732, now seen corresponding path program 1 times [2023-11-19 07:56:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312370063] [2023-11-19 07:56:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312370063] [2023-11-19 07:56:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312370063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:12,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:12,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:12,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543084374] [2023-11-19 07:56:12,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:12,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:12,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1451 [2023-11-19 07:56:12,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 160 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 682.6666666666666) internal successors, (2048), 3 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:12,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1451 [2023-11-19 07:56:12,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:12,837 INFO L124 PetriNetUnfolderBase]: 1357/4389 cut-off events. [2023-11-19 07:56:12,837 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-19 07:56:12,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 4389 events. 1357/4389 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 35868 event pairs, 1121 based on Foata normal form. 0/3938 useless extension candidates. Maximal degree in co-relation 6837. Up to 2234 conditions per place. [2023-11-19 07:56:12,870 INFO L140 encePairwiseOnDemand]: 1444/1451 looper letters, 60 selfloop transitions, 1 changer transitions 0/154 dead transitions. [2023-11-19 07:56:12,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 454 flow [2023-11-19 07:56:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2100 transitions. [2023-11-19 07:56:12,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824259131633356 [2023-11-19 07:56:12,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2100 transitions. [2023-11-19 07:56:12,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2100 transitions. [2023-11-19 07:56:12,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:12,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2100 transitions. [2023-11-19 07:56:12,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 700.0) internal successors, (2100), 3 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,900 INFO L175 Difference]: Start difference. First operand has 159 places, 160 transitions, 344 flow. Second operand 3 states and 2100 transitions. [2023-11-19 07:56:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 454 flow [2023-11-19 07:56:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 154 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:12,905 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 334 flow [2023-11-19 07:56:12,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2023-11-19 07:56:12,907 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -56 predicate places. [2023-11-19 07:56:12,907 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 334 flow [2023-11-19 07:56:12,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 682.6666666666666) internal successors, (2048), 3 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:12,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:12,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:12,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:12,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -293392436, now seen corresponding path program 1 times [2023-11-19 07:56:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604940878] [2023-11-19 07:56:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:13,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604940878] [2023-11-19 07:56:13,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604940878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:13,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607737356] [2023-11-19 07:56:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:13,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 696 out of 1451 [2023-11-19 07:56:13,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 699.0) internal successors, (2097), 3 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:13,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 696 of 1451 [2023-11-19 07:56:13,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:13,737 INFO L124 PetriNetUnfolderBase]: 737/3048 cut-off events. [2023-11-19 07:56:13,738 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-19 07:56:13,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 3048 events. 737/3048 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 24866 event pairs, 563 based on Foata normal form. 0/2670 useless extension candidates. Maximal degree in co-relation 4418. Up to 1209 conditions per place. [2023-11-19 07:56:13,762 INFO L140 encePairwiseOnDemand]: 1448/1451 looper letters, 49 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2023-11-19 07:56:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 155 transitions, 438 flow [2023-11-19 07:56:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2136 transitions. [2023-11-19 07:56:13,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906960716747071 [2023-11-19 07:56:13,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2136 transitions. [2023-11-19 07:56:13,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2136 transitions. [2023-11-19 07:56:13,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:13,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2136 transitions. [2023-11-19 07:56:13,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,792 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 334 flow. Second operand 3 states and 2136 transitions. [2023-11-19 07:56:13,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 155 transitions, 438 flow [2023-11-19 07:56:13,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:13,796 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 345 flow [2023-11-19 07:56:13,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2023-11-19 07:56:13,798 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -54 predicate places. [2023-11-19 07:56:13,798 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 345 flow [2023-11-19 07:56:13,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.0) internal successors, (2097), 3 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:13,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:13,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:13,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:13,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:13,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash 213641251, now seen corresponding path program 1 times [2023-11-19 07:56:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288638820] [2023-11-19 07:56:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:14,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:14,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288638820] [2023-11-19 07:56:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288638820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:14,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:56:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737815282] [2023-11-19 07:56:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:14,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:15,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 690 out of 1451 [2023-11-19 07:56:15,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 155 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 692.3333333333334) internal successors, (4154), 6 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:15,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:15,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 690 of 1451 [2023-11-19 07:56:15,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:16,184 INFO L124 PetriNetUnfolderBase]: 2485/4763 cut-off events. [2023-11-19 07:56:16,184 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2023-11-19 07:56:16,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8977 conditions, 4763 events. 2485/4763 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 34007 event pairs, 176 based on Foata normal form. 0/4131 useless extension candidates. Maximal degree in co-relation 8970. Up to 1352 conditions per place. [2023-11-19 07:56:16,232 INFO L140 encePairwiseOnDemand]: 1446/1451 looper letters, 191 selfloop transitions, 4 changer transitions 0/294 dead transitions. [2023-11-19 07:56:16,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 294 transitions, 1093 flow [2023-11-19 07:56:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4315 transitions. [2023-11-19 07:56:16,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49563519411899837 [2023-11-19 07:56:16,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4315 transitions. [2023-11-19 07:56:16,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4315 transitions. [2023-11-19 07:56:16,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:16,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4315 transitions. [2023-11-19 07:56:16,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 719.1666666666666) internal successors, (4315), 6 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,288 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 345 flow. Second operand 6 states and 4315 transitions. [2023-11-19 07:56:16,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 294 transitions, 1093 flow [2023-11-19 07:56:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 294 transitions, 1089 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:16,297 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 347 flow [2023-11-19 07:56:16,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2023-11-19 07:56:16,299 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -51 predicate places. [2023-11-19 07:56:16,299 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 347 flow [2023-11-19 07:56:16,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 692.3333333333334) internal successors, (4154), 6 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:16,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:16,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:56:16,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:16,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash 777128117, now seen corresponding path program 1 times [2023-11-19 07:56:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631959782] [2023-11-19 07:56:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631959782] [2023-11-19 07:56:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631959782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:16,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:16,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718814521] [2023-11-19 07:56:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:16,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 696 out of 1451 [2023-11-19 07:56:16,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:16,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:16,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 696 of 1451 [2023-11-19 07:56:16,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:17,241 INFO L124 PetriNetUnfolderBase]: 737/3037 cut-off events. [2023-11-19 07:56:17,241 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2023-11-19 07:56:17,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 3037 events. 737/3037 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 24776 event pairs, 563 based on Foata normal form. 0/2671 useless extension candidates. Maximal degree in co-relation 4651. Up to 1209 conditions per place. [2023-11-19 07:56:17,268 INFO L140 encePairwiseOnDemand]: 1447/1451 looper letters, 49 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2023-11-19 07:56:17,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 155 transitions, 453 flow [2023-11-19 07:56:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2832 transitions. [2023-11-19 07:56:17,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879393521709166 [2023-11-19 07:56:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2832 transitions. [2023-11-19 07:56:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2832 transitions. [2023-11-19 07:56:17,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:17,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2832 transitions. [2023-11-19 07:56:17,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:17,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:17,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:17,306 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 347 flow. Second operand 4 states and 2832 transitions. [2023-11-19 07:56:17,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 155 transitions, 453 flow [2023-11-19 07:56:17,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:56:17,313 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 354 flow [2023-11-19 07:56:17,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2023-11-19 07:56:17,318 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -51 predicate places. [2023-11-19 07:56:17,318 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 354 flow [2023-11-19 07:56:17,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:17,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:17,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:56:17,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 719965305, now seen corresponding path program 1 times [2023-11-19 07:56:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891343041] [2023-11-19 07:56:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891343041] [2023-11-19 07:56:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891343041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881816489] [2023-11-19 07:56:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:17,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:17,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:17,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:17,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:56:17,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:56:17,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881816489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 07:56:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136821151] [2023-11-19 07:56:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:17,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 696 out of 1451 [2023-11-19 07:56:17,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 698.25) internal successors, (2793), 4 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:17,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:17,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 696 of 1451 [2023-11-19 07:56:17,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:18,544 INFO L124 PetriNetUnfolderBase]: 737/3038 cut-off events. [2023-11-19 07:56:18,544 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-19 07:56:18,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 3038 events. 737/3038 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 24729 event pairs, 563 based on Foata normal form. 0/2673 useless extension candidates. Maximal degree in co-relation 4431. Up to 1210 conditions per place. [2023-11-19 07:56:18,567 INFO L140 encePairwiseOnDemand]: 1447/1451 looper letters, 50 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2023-11-19 07:56:18,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 156 transitions, 462 flow [2023-11-19 07:56:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2832 transitions. [2023-11-19 07:56:18,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879393521709166 [2023-11-19 07:56:18,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2832 transitions. [2023-11-19 07:56:18,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2832 transitions. [2023-11-19 07:56:18,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:18,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2832 transitions. [2023-11-19 07:56:18,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:18,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:18,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:18,602 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 354 flow. Second operand 4 states and 2832 transitions. [2023-11-19 07:56:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 156 transitions, 462 flow [2023-11-19 07:56:18,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 156 transitions, 456 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:18,607 INFO L231 Difference]: Finished difference. Result has 162 places, 156 transitions, 362 flow [2023-11-19 07:56:18,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=162, PETRI_TRANSITIONS=156} [2023-11-19 07:56:18,610 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -49 predicate places. [2023-11-19 07:56:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 156 transitions, 362 flow [2023-11-19 07:56:18,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 698.25) internal successors, (2793), 4 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:18,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:18,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:18,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:18,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:18,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1580864176, now seen corresponding path program 1 times [2023-11-19 07:56:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282097549] [2023-11-19 07:56:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:56:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282097549] [2023-11-19 07:56:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282097549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915550387] [2023-11-19 07:56:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:19,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:19,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:56:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:19,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:56:19,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:56:19,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915550387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:19,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:19,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 07:56:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315450674] [2023-11-19 07:56:19,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:19,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:19,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 696 out of 1451 [2023-11-19 07:56:19,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 156 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 698.5) internal successors, (2794), 4 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:19,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:19,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 696 of 1451 [2023-11-19 07:56:19,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:19,914 INFO L124 PetriNetUnfolderBase]: 737/3039 cut-off events. [2023-11-19 07:56:19,914 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-19 07:56:19,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 3039 events. 737/3039 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 24751 event pairs, 563 based on Foata normal form. 0/2675 useless extension candidates. Maximal degree in co-relation 4436. Up to 1211 conditions per place. [2023-11-19 07:56:19,932 INFO L140 encePairwiseOnDemand]: 1447/1451 looper letters, 51 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-11-19 07:56:19,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 157 transitions, 472 flow [2023-11-19 07:56:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2832 transitions. [2023-11-19 07:56:19,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879393521709166 [2023-11-19 07:56:19,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2832 transitions. [2023-11-19 07:56:19,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2832 transitions. [2023-11-19 07:56:19,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:19,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2832 transitions. [2023-11-19 07:56:19,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 708.0) internal successors, (2832), 4 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:19,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:19,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1451.0) internal successors, (7255), 5 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:19,964 INFO L175 Difference]: Start difference. First operand has 162 places, 156 transitions, 362 flow. Second operand 4 states and 2832 transitions. [2023-11-19 07:56:19,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 157 transitions, 472 flow [2023-11-19 07:56:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 466 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:19,970 INFO L231 Difference]: Finished difference. Result has 164 places, 157 transitions, 370 flow [2023-11-19 07:56:19,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=370, PETRI_PLACES=164, PETRI_TRANSITIONS=157} [2023-11-19 07:56:19,971 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -47 predicate places. [2023-11-19 07:56:19,971 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 157 transitions, 370 flow [2023-11-19 07:56:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 698.5) internal successors, (2794), 4 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:19,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:19,972 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] [2023-11-19 07:56:19,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:20,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8a3ff6-b868-449e-ac9e-7072a9761b35/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:56:20,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:20,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2041749245, now seen corresponding path program 1 times [2023-11-19 07:56:20,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:20,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709782462] [2023-11-19 07:56:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:56:20,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:20,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709782462] [2023-11-19 07:56:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709782462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:20,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:56:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065317097] [2023-11-19 07:56:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:20,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:21,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 672 out of 1451 [2023-11-19 07:56:21,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 157 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 674.6666666666666) internal successors, (4048), 6 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:21,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:21,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 672 of 1451 [2023-11-19 07:56:21,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:22,466 INFO L124 PetriNetUnfolderBase]: 1701/4670 cut-off events. [2023-11-19 07:56:22,466 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-19 07:56:22,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7753 conditions, 4670 events. 1701/4670 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 35615 event pairs, 529 based on Foata normal form. 0/4236 useless extension candidates. Maximal degree in co-relation 7743. Up to 2602 conditions per place. [2023-11-19 07:56:22,515 INFO L140 encePairwiseOnDemand]: 1439/1451 looper letters, 114 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2023-11-19 07:56:22,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 205 transitions, 742 flow [2023-11-19 07:56:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4150 transitions. [2023-11-19 07:56:22,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47668274753043877 [2023-11-19 07:56:22,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4150 transitions. [2023-11-19 07:56:22,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4150 transitions. [2023-11-19 07:56:22,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:22,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4150 transitions. [2023-11-19 07:56:22,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 691.6666666666666) internal successors, (4150), 6 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,561 INFO L175 Difference]: Start difference. First operand has 164 places, 157 transitions, 370 flow. Second operand 6 states and 4150 transitions. [2023-11-19 07:56:22,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 205 transitions, 742 flow [2023-11-19 07:56:22,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 205 transitions, 736 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:22,567 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 418 flow [2023-11-19 07:56:22,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2023-11-19 07:56:22,568 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -44 predicate places. [2023-11-19 07:56:22,568 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 418 flow [2023-11-19 07:56:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 674.6666666666666) internal successors, (4048), 6 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:22,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:22,570 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] [2023-11-19 07:56:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:56:22,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:22,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1405222943, now seen corresponding path program 1 times [2023-11-19 07:56:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562679106] [2023-11-19 07:56:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:56:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562679106] [2023-11-19 07:56:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562679106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:23,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:23,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:56:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308277280] [2023-11-19 07:56:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:24,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 672 out of 1451 [2023-11-19 07:56:24,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:24,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:24,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 672 of 1451 [2023-11-19 07:56:24,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:24,995 INFO L124 PetriNetUnfolderBase]: 1778/5028 cut-off events. [2023-11-19 07:56:24,995 INFO L125 PetriNetUnfolderBase]: For 234/240 co-relation queries the response was YES. [2023-11-19 07:56:25,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8445 conditions, 5028 events. 1778/5028 cut-off events. For 234/240 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 39185 event pairs, 549 based on Foata normal form. 0/4595 useless extension candidates. Maximal degree in co-relation 8432. Up to 2808 conditions per place. [2023-11-19 07:56:25,047 INFO L140 encePairwiseOnDemand]: 1439/1451 looper letters, 111 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2023-11-19 07:56:25,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 205 transitions, 776 flow [2023-11-19 07:56:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4146 transitions. [2023-11-19 07:56:25,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47622329427980703 [2023-11-19 07:56:25,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4146 transitions. [2023-11-19 07:56:25,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4146 transitions. [2023-11-19 07:56:25,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:25,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4146 transitions. [2023-11-19 07:56:25,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1451.0) internal successors, (10157), 7 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,094 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 418 flow. Second operand 6 states and 4146 transitions. [2023-11-19 07:56:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 205 transitions, 776 flow [2023-11-19 07:56:25,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 205 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:25,100 INFO L231 Difference]: Finished difference. Result has 172 places, 165 transitions, 472 flow [2023-11-19 07:56:25,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=172, PETRI_TRANSITIONS=165} [2023-11-19 07:56:25,101 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -39 predicate places. [2023-11-19 07:56:25,101 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 165 transitions, 472 flow [2023-11-19 07:56:25,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 675.0) internal successors, (4050), 6 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:25,103 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] [2023-11-19 07:56:25,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:56:25,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:25,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -246207261, now seen corresponding path program 1 times [2023-11-19 07:56:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458016848] [2023-11-19 07:56:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:56:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458016848] [2023-11-19 07:56:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458016848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956719595] [2023-11-19 07:56:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:25,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 1451 [2023-11-19 07:56:25,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 165 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 708.3333333333334) internal successors, (2125), 3 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:25,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 1451 [2023-11-19 07:56:25,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:25,935 INFO L124 PetriNetUnfolderBase]: 1116/4258 cut-off events. [2023-11-19 07:56:25,935 INFO L125 PetriNetUnfolderBase]: For 256/266 co-relation queries the response was YES. [2023-11-19 07:56:25,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 4258 events. 1116/4258 cut-off events. For 256/266 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36925 event pairs, 269 based on Foata normal form. 0/3931 useless extension candidates. Maximal degree in co-relation 6707. Up to 1401 conditions per place. [2023-11-19 07:56:25,973 INFO L140 encePairwiseOnDemand]: 1447/1451 looper letters, 82 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2023-11-19 07:56:25,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 188 transitions, 699 flow [2023-11-19 07:56:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2185 transitions. [2023-11-19 07:56:25,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019526763151849 [2023-11-19 07:56:25,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2185 transitions. [2023-11-19 07:56:25,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2185 transitions. [2023-11-19 07:56:25,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:25,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2185 transitions. [2023-11-19 07:56:25,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 728.3333333333334) internal successors, (2185), 3 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1451.0) internal successors, (5804), 4 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:25,999 INFO L175 Difference]: Start difference. First operand has 172 places, 165 transitions, 472 flow. Second operand 3 states and 2185 transitions. [2023-11-19 07:56:25,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 188 transitions, 699 flow [2023-11-19 07:56:26,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 188 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:26,006 INFO L231 Difference]: Finished difference. Result has 173 places, 165 transitions, 482 flow [2023-11-19 07:56:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1451, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=173, PETRI_TRANSITIONS=165} [2023-11-19 07:56:26,008 INFO L281 CegarLoopForPetriNet]: 211 programPoint places, -38 predicate places. [2023-11-19 07:56:26,008 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 165 transitions, 482 flow [2023-11-19 07:56:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 708.3333333333334) internal successors, (2125), 3 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:26,010 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] [2023-11-19 07:56:26,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:56:26,010 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2023-11-19 07:56:26,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1394177437, now seen corresponding path program 1 times [2023-11-19 07:56:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080525034] [2023-11-19 07:56:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:56:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080525034] [2023-11-19 07:56:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080525034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:26,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980559943] [2023-11-19 07:56:26,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:26,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 1451 [2023-11-19 07:56:26,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 165 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 709.6666666666666) internal successors, (2129), 3 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:26,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:26,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 1451 [2023-11-19 07:56:26,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand