./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/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_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/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_c1b26442-27a1-4549-b4d6-3506a4fa5a63/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 e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:02,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:02,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:58:02,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:02,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:02,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:02,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:02,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:02,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:02,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:02,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:02,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:02,331 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:02,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:02,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:02,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:02,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:02,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:02,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:02,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:02,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:02,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:02,337 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:58:02,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:02,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:02,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:02,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:02,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:02,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:02,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:02,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:02,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:02,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:02,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:02,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:02,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:02,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:02,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:02,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:02,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:02,344 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:02,344 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_c1b26442-27a1-4549-b4d6-3506a4fa5a63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f [2023-11-19 07:58:02,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:02,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:02,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:02,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:02,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:02,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-19 07:58:05,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:06,401 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:06,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-19 07:58:06,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/data/30ebfc026/b18e84e064f74bf1885677dd25b84625/FLAG1cb14a6fd [2023-11-19 07:58:06,455 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/data/30ebfc026/b18e84e064f74bf1885677dd25b84625 [2023-11-19 07:58:06,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:06,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:06,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:06,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:06,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:06,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:06" (1/1) ... [2023-11-19 07:58:06,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7ad0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:06, skipping insertion in model container [2023-11-19 07:58:06,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:06" (1/1) ... [2023-11-19 07:58:06,558 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:06,743 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:58:07,057 WARN L635 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-19 07:58:07,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:07,104 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:07,129 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:58:07,155 WARN L635 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-19 07:58:07,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:07,233 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:07,234 WARN L675 CHandler]: The function __sync_fetch_and_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:07,242 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:07,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07 WrapperNode [2023-11-19 07:58:07,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:07,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:07,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:07,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:07,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,305 INFO L138 Inliner]: procedures = 269, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-19 07:58:07,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:07,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:07,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:07,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:07,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:07,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:07,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:07,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:07,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (1/1) ... [2023-11-19 07:58:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:07,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:07,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:07,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b26442-27a1-4549-b4d6-3506a4fa5a63/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:58:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure __sync_fetch_and_add [2023-11-19 07:58:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:58:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:58:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:07,524 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 07:58:07,694 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:07,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:07,958 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:07,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:07,971 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:58:07,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:07 BoogieIcfgContainer [2023-11-19 07:58:07,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:07,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:07,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:07,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:07,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:06" (1/3) ... [2023-11-19 07:58:07,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:07, skipping insertion in model container [2023-11-19 07:58:07,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:07" (2/3) ... [2023-11-19 07:58:07,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a95a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:07, skipping insertion in model container [2023-11-19 07:58:07,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:07" (3/3) ... [2023-11-19 07:58:07,988 INFO L112 eAbstractionObserver]: Analyzing ICFG atomic-gcc.i [2023-11-19 07:58:08,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:08,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:08,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:58:08,014 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:08,085 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:58:08,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 191 flow [2023-11-19 07:58:08,285 INFO L124 PetriNetUnfolderBase]: 6/140 cut-off events. [2023-11-19 07:58:08,286 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:08,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 140 events. 6/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-11-19 07:58:08,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 92 transitions, 191 flow [2023-11-19 07:58:08,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 83 transitions, 173 flow [2023-11-19 07:58:08,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:08,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 83 transitions, 173 flow [2023-11-19 07:58:08,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 83 transitions, 173 flow [2023-11-19 07:58:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 83 transitions, 173 flow [2023-11-19 07:58:08,429 INFO L124 PetriNetUnfolderBase]: 6/122 cut-off events. [2023-11-19 07:58:08,430 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:08,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 122 events. 6/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 172 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-11-19 07:58:08,433 INFO L119 LiptonReduction]: Number of co-enabled transitions 552 [2023-11-19 07:58:13,031 INFO L134 LiptonReduction]: Checked pairs total: 506 [2023-11-19 07:58:13,032 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-11-19 07:58:13,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:13,056 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:13,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:13,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:13,059 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:58:13,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:13,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:13,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:13,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:13,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash 10549, now seen corresponding path program 1 times [2023-11-19 07:58:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705440033] [2023-11-19 07:58:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:13,270 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 07:58:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705440033] [2023-11-19 07:58:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705440033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:13,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053883835] [2023-11-19 07:58:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:13,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:13,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2023-11-19 07:58:13,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 35 flow. Second operand has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:13,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2023-11-19 07:58:13,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:13,375 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2023-11-19 07:58:13,376 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:13,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 22 events. 5/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 4 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 26. Up to 21 conditions per place. [2023-11-19 07:58:13,377 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 5 selfloop transitions, 0 changer transitions 4/10 dead transitions. [2023-11-19 07:58:13,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 10 transitions, 45 flow [2023-11-19 07:58:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2023-11-19 07:58:13,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252808988764045 [2023-11-19 07:58:13,394 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2023-11-19 07:58:13,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2023-11-19 07:58:13,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:13,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2023-11-19 07:58:13,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,409 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,411 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 35 flow. Second operand 2 states and 187 transitions. [2023-11-19 07:58:13,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 10 transitions, 45 flow [2023-11-19 07:58:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:13,415 INFO L231 Difference]: Finished difference. Result has 13 places, 6 transitions, 16 flow [2023-11-19 07:58:13,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=16, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2023-11-19 07:58:13,421 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -3 predicate places. [2023-11-19 07:58:13,421 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 16 flow [2023-11-19 07:58:13,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:13,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:13,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:58:13,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:13,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:13,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1164464023, now seen corresponding path program 1 times [2023-11-19 07:58:13,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284547545] [2023-11-19 07:58:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:13,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:13,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:13,588 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:13,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:13,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:13,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:13,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:13,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:13,592 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:13,595 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:13,596 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:58:13,625 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:58:13,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 216 flow [2023-11-19 07:58:13,670 INFO L124 PetriNetUnfolderBase]: 11/247 cut-off events. [2023-11-19 07:58:13,671 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:58:13,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 247 events. 11/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 496 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-11-19 07:58:13,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 100 transitions, 216 flow [2023-11-19 07:58:13,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 198 flow [2023-11-19 07:58:13,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:13,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 198 flow [2023-11-19 07:58:13,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 198 flow [2023-11-19 07:58:13,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 198 flow [2023-11-19 07:58:13,715 INFO L124 PetriNetUnfolderBase]: 11/211 cut-off events. [2023-11-19 07:58:13,716 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:58:13,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 211 events. 11/211 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 358 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-11-19 07:58:13,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 1332 [2023-11-19 07:58:17,484 INFO L134 LiptonReduction]: Checked pairs total: 1200 [2023-11-19 07:58:17,485 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-11-19 07:58:17,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:17,489 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:17,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:17,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:17,492 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:58:17,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:17,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:17,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:17,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:17,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash 16664, now seen corresponding path program 1 times [2023-11-19 07:58:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824912554] [2023-11-19 07:58:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,520 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 07:58:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824912554] [2023-11-19 07:58:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824912554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:17,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231351110] [2023-11-19 07:58:17,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:17,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-11-19 07:58:17,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:17,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-11-19 07:58:17,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:17,572 INFO L124 PetriNetUnfolderBase]: 30/83 cut-off events. [2023-11-19 07:58:17,572 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 07:58:17,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 83 events. 30/83 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 201 event pairs, 26 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 55. Up to 74 conditions per place. [2023-11-19 07:58:17,573 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 7 selfloop transitions, 0 changer transitions 6/15 dead transitions. [2023-11-19 07:58:17,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 70 flow [2023-11-19 07:58:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2023-11-19 07:58:17,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519125683060109 [2023-11-19 07:58:17,577 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2023-11-19 07:58:17,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2023-11-19 07:58:17,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:17,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2023-11-19 07:58:17,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,583 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,583 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 54 flow. Second operand 2 states and 202 transitions. [2023-11-19 07:58:17,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 70 flow [2023-11-19 07:58:17,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:17,585 INFO L231 Difference]: Finished difference. Result has 19 places, 9 transitions, 28 flow [2023-11-19 07:58:17,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=19, PETRI_TRANSITIONS=9} [2023-11-19 07:58:17,586 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-11-19 07:58:17,586 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 9 transitions, 28 flow [2023-11-19 07:58:17,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:17,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:17,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:58:17,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:17,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 485970678, now seen corresponding path program 1 times [2023-11-19 07:58:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163934898] [2023-11-19 07:58:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:17,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:17,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:17,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:17,694 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:17,695 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:17,695 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:58:17,713 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:58:17,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 243 flow [2023-11-19 07:58:17,777 INFO L124 PetriNetUnfolderBase]: 21/435 cut-off events. [2023-11-19 07:58:17,777 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:58:17,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 435 events. 21/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1171 event pairs, 1 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 255. Up to 16 conditions per place. [2023-11-19 07:58:17,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 108 transitions, 243 flow [2023-11-19 07:58:17,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 225 flow [2023-11-19 07:58:17,781 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:17,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 99 transitions, 225 flow [2023-11-19 07:58:17,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 99 transitions, 225 flow [2023-11-19 07:58:17,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 225 flow [2023-11-19 07:58:17,829 INFO L124 PetriNetUnfolderBase]: 21/363 cut-off events. [2023-11-19 07:58:17,830 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:58:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 363 events. 21/363 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 812 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 219. Up to 16 conditions per place. [2023-11-19 07:58:17,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-11-19 07:58:21,803 INFO L134 LiptonReduction]: Checked pairs total: 2191 [2023-11-19 07:58:21,803 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-11-19 07:58:21,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:21,807 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:21,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:21,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:21,809 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:58:21,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:21,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:21,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:21,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:21,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 23319, now seen corresponding path program 1 times [2023-11-19 07:58:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709146229] [2023-11-19 07:58:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:21,831 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 07:58:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:21,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709146229] [2023-11-19 07:58:21,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709146229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:21,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:21,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826241759] [2023-11-19 07:58:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:21,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:21,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:21,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 200 [2023-11-19 07:58:21,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 71 flow. Second operand has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:21,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 200 [2023-11-19 07:58:21,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:21,901 INFO L124 PetriNetUnfolderBase]: 128/273 cut-off events. [2023-11-19 07:58:21,901 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-19 07:58:21,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 273 events. 128/273 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 959 event pairs, 115 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 174. Up to 246 conditions per place. [2023-11-19 07:58:21,904 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 9 selfloop transitions, 0 changer transitions 7/18 dead transitions. [2023-11-19 07:58:21,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 93 flow [2023-11-19 07:58:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2023-11-19 07:58:21,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425 [2023-11-19 07:58:21,907 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 217 transitions. [2023-11-19 07:58:21,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 217 transitions. [2023-11-19 07:58:21,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:21,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 217 transitions. [2023-11-19 07:58:21,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,911 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,911 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 71 flow. Second operand 2 states and 217 transitions. [2023-11-19 07:58:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 93 flow [2023-11-19 07:58:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 93 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:21,913 INFO L231 Difference]: Finished difference. Result has 23 places, 11 transitions, 40 flow [2023-11-19 07:58:21,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=11} [2023-11-19 07:58:21,914 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-11-19 07:58:21,915 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 11 transitions, 40 flow [2023-11-19 07:58:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:21,915 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:58:21,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:21,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:21,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1798027186, now seen corresponding path program 1 times [2023-11-19 07:58:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920393202] [2023-11-19 07:58:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:21,966 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:22,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:22,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:22,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:22,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:22,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:22,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:22,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:22,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:22,003 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:22,004 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:22,004 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:58:22,024 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:58:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 116 transitions, 272 flow [2023-11-19 07:58:22,176 INFO L124 PetriNetUnfolderBase]: 43/787 cut-off events. [2023-11-19 07:58:22,177 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:58:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 787 events. 43/787 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2973 event pairs, 6 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-11-19 07:58:22,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 116 transitions, 272 flow [2023-11-19 07:58:22,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 254 flow [2023-11-19 07:58:22,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:22,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 107 transitions, 254 flow [2023-11-19 07:58:22,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 107 transitions, 254 flow [2023-11-19 07:58:22,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 254 flow [2023-11-19 07:58:22,284 INFO L124 PetriNetUnfolderBase]: 43/643 cut-off events. [2023-11-19 07:58:22,284 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:58:22,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 643 events. 43/643 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2053 event pairs, 6 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 383. Up to 32 conditions per place. [2023-11-19 07:58:22,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2023-11-19 07:58:26,271 INFO L134 LiptonReduction]: Checked pairs total: 3156 [2023-11-19 07:58:26,271 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-19 07:58:26,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:26,274 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:26,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:26,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:26,283 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:58:26,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:26,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:26,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:26,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:26,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash 30419, now seen corresponding path program 1 times [2023-11-19 07:58:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:26,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705400867] [2023-11-19 07:58:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:26,311 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 07:58:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705400867] [2023-11-19 07:58:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705400867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:26,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:26,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100741586] [2023-11-19 07:58:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:26,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 214 [2023-11-19 07:58:26,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:26,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 214 [2023-11-19 07:58:26,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:26,488 INFO L124 PetriNetUnfolderBase]: 482/877 cut-off events. [2023-11-19 07:58:26,488 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-19 07:58:26,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 877 events. 482/877 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3751 event pairs, 442 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 577. Up to 802 conditions per place. [2023-11-19 07:58:26,492 INFO L140 encePairwiseOnDemand]: 210/214 looper letters, 11 selfloop transitions, 0 changer transitions 8/21 dead transitions. [2023-11-19 07:58:26,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 118 flow [2023-11-19 07:58:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 232 transitions. [2023-11-19 07:58:26,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2023-11-19 07:58:26,495 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 232 transitions. [2023-11-19 07:58:26,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 232 transitions. [2023-11-19 07:58:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:26,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 232 transitions. [2023-11-19 07:58:26,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,501 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,501 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 90 flow. Second operand 2 states and 232 transitions. [2023-11-19 07:58:26,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 118 flow [2023-11-19 07:58:26,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:26,506 INFO L231 Difference]: Finished difference. Result has 27 places, 13 transitions, 54 flow [2023-11-19 07:58:26,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=13} [2023-11-19 07:58:26,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-11-19 07:58:26,510 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 13 transitions, 54 flow [2023-11-19 07:58:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:26,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:26,515 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:26,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:26,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 693066509, now seen corresponding path program 1 times [2023-11-19 07:58:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400431483] [2023-11-19 07:58:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:26,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:26,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:26,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:26,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:26,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:26,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:26,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:58:26,684 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:26,685 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:26,685 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-19 07:58:26,724 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-19 07:58:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 303 flow [2023-11-19 07:58:26,980 INFO L124 PetriNetUnfolderBase]: 93/1471 cut-off events. [2023-11-19 07:58:26,980 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-19 07:58:26,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 1471 events. 93/1471 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7471 event pairs, 23 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 832. Up to 80 conditions per place. [2023-11-19 07:58:26,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 303 flow [2023-11-19 07:58:26,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 285 flow [2023-11-19 07:58:26,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:26,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 115 transitions, 285 flow [2023-11-19 07:58:26,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 115 transitions, 285 flow [2023-11-19 07:58:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 285 flow [2023-11-19 07:58:27,166 INFO L124 PetriNetUnfolderBase]: 93/1183 cut-off events. [2023-11-19 07:58:27,166 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-19 07:58:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 1183 events. 93/1183 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5281 event pairs, 23 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 688. Up to 80 conditions per place. [2023-11-19 07:58:27,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 4140 [2023-11-19 07:58:31,290 INFO L134 LiptonReduction]: Checked pairs total: 4459 [2023-11-19 07:58:31,290 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-19 07:58:31,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:31,293 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:31,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:31,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:31,294 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:58:31,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:31,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:31,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:31,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:31,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash 37911, now seen corresponding path program 1 times [2023-11-19 07:58:31,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937166884] [2023-11-19 07:58:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:31,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:31,308 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 07:58:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937166884] [2023-11-19 07:58:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937166884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820397669] [2023-11-19 07:58:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:31,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:31,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 226 [2023-11-19 07:58:31,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 111 flow. Second operand has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:31,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 226 [2023-11-19 07:58:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:31,741 INFO L124 PetriNetUnfolderBase]: 1716/2809 cut-off events. [2023-11-19 07:58:31,741 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2023-11-19 07:58:31,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 2809 events. 1716/2809 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13784 event pairs, 1595 based on Foata normal form. 0/2746 useless extension candidates. Maximal degree in co-relation 1866. Up to 2602 conditions per place. [2023-11-19 07:58:31,751 INFO L140 encePairwiseOnDemand]: 222/226 looper letters, 13 selfloop transitions, 0 changer transitions 9/24 dead transitions. [2023-11-19 07:58:31,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 145 flow [2023-11-19 07:58:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 247 transitions. [2023-11-19 07:58:31,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464601769911505 [2023-11-19 07:58:31,753 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 247 transitions. [2023-11-19 07:58:31,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 247 transitions. [2023-11-19 07:58:31,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:31,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 247 transitions. [2023-11-19 07:58:31,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,758 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,758 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 111 flow. Second operand 2 states and 247 transitions. [2023-11-19 07:58:31,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 145 flow [2023-11-19 07:58:31,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 145 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:31,763 INFO L231 Difference]: Finished difference. Result has 31 places, 15 transitions, 70 flow [2023-11-19 07:58:31,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=15} [2023-11-19 07:58:31,766 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-11-19 07:58:31,766 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 70 flow [2023-11-19 07:58:31,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:31,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:31,767 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:31,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:58:31,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:31,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -304624531, now seen corresponding path program 1 times [2023-11-19 07:58:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294891541] [2023-11-19 07:58:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:31,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:31,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:31,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:31,902 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:31,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:31,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:31,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:31,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:31,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:58:31,903 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:31,905 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:31,905 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-19 07:58:31,934 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-19 07:58:31,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 132 transitions, 336 flow [2023-11-19 07:58:32,533 INFO L124 PetriNetUnfolderBase]: 207/2827 cut-off events. [2023-11-19 07:58:32,533 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-19 07:58:32,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2827 events. 207/2827 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 18800 event pairs, 72 based on Foata normal form. 0/2485 useless extension candidates. Maximal degree in co-relation 1570. Up to 192 conditions per place. [2023-11-19 07:58:32,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 132 transitions, 336 flow [2023-11-19 07:58:32,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 123 transitions, 318 flow [2023-11-19 07:58:32,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:32,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 123 transitions, 318 flow [2023-11-19 07:58:32,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 123 transitions, 318 flow [2023-11-19 07:58:32,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 318 flow [2023-11-19 07:58:32,989 INFO L124 PetriNetUnfolderBase]: 207/2251 cut-off events. [2023-11-19 07:58:32,989 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-19 07:58:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 2251 events. 207/2251 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13419 event pairs, 72 based on Foata normal form. 0/1973 useless extension candidates. Maximal degree in co-relation 1282. Up to 192 conditions per place. [2023-11-19 07:58:33,031 INFO L119 LiptonReduction]: Number of co-enabled transitions 5292 [2023-11-19 07:58:36,919 INFO L134 LiptonReduction]: Checked pairs total: 6087 [2023-11-19 07:58:36,920 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-11-19 07:58:36,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:36,922 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:36,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:36,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:36,924 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:58:36,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:36,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:36,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:36,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:36,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 45720, now seen corresponding path program 1 times [2023-11-19 07:58:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:36,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489162155] [2023-11-19 07:58:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,947 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 07:58:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489162155] [2023-11-19 07:58:36,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489162155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918758050] [2023-11-19 07:58:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:36,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 236 [2023-11-19 07:58:36,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:36,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:36,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 236 [2023-11-19 07:58:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:38,141 INFO L124 PetriNetUnfolderBase]: 5938/9021 cut-off events. [2023-11-19 07:58:38,141 INFO L125 PetriNetUnfolderBase]: For 3610/3610 co-relation queries the response was YES. [2023-11-19 07:58:38,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19312 conditions, 9021 events. 5938/9021 cut-off events. For 3610/3610 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 48830 event pairs, 5574 based on Foata normal form. 0/8893 useless extension candidates. Maximal degree in co-relation 6007. Up to 8442 conditions per place. [2023-11-19 07:58:38,180 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 15 selfloop transitions, 0 changer transitions 10/27 dead transitions. [2023-11-19 07:58:38,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 174 flow [2023-11-19 07:58:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2023-11-19 07:58:38,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5550847457627118 [2023-11-19 07:58:38,182 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2023-11-19 07:58:38,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2023-11-19 07:58:38,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:38,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2023-11-19 07:58:38,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:38,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:38,186 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:38,186 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 134 flow. Second operand 2 states and 262 transitions. [2023-11-19 07:58:38,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 174 flow [2023-11-19 07:58:38,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:38,193 INFO L231 Difference]: Finished difference. Result has 35 places, 17 transitions, 88 flow [2023-11-19 07:58:38,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2023-11-19 07:58:38,195 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-19 07:58:38,195 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 88 flow [2023-11-19 07:58:38,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:38,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:38,196 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:58:38,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:38,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash -123239179, now seen corresponding path program 1 times [2023-11-19 07:58:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088168854] [2023-11-19 07:58:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:38,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:38,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:38,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:38,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:38,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:38,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:38,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:38,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:38,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:58:38,347 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:38,349 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:38,349 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-19 07:58:38,371 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-19 07:58:38,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 140 transitions, 371 flow [2023-11-19 07:58:39,470 INFO L124 PetriNetUnfolderBase]: 465/5543 cut-off events. [2023-11-19 07:58:39,471 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-19 07:58:39,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 5543 events. 465/5543 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 45451 event pairs, 201 based on Foata normal form. 0/4878 useless extension candidates. Maximal degree in co-relation 3045. Up to 448 conditions per place. [2023-11-19 07:58:39,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 140 transitions, 371 flow [2023-11-19 07:58:39,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 131 transitions, 353 flow [2023-11-19 07:58:39,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:39,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 131 transitions, 353 flow [2023-11-19 07:58:39,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 131 transitions, 353 flow [2023-11-19 07:58:39,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 131 transitions, 353 flow [2023-11-19 07:58:40,298 INFO L124 PetriNetUnfolderBase]: 465/4391 cut-off events. [2023-11-19 07:58:40,298 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-19 07:58:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 4391 events. 465/4391 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 32654 event pairs, 201 based on Foata normal form. 0/3854 useless extension candidates. Maximal degree in co-relation 2469. Up to 448 conditions per place. [2023-11-19 07:58:40,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-11-19 07:58:44,806 INFO L134 LiptonReduction]: Checked pairs total: 7754 [2023-11-19 07:58:44,806 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-19 07:58:44,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:44,808 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;@36d8bf4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:44,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:58:44,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:44,809 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:58:44,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:44,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:44,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:44,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:44,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 53946, now seen corresponding path program 1 times [2023-11-19 07:58:44,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:44,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557557271] [2023-11-19 07:58:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:44,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:44,822 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 07:58:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557557271] [2023-11-19 07:58:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557557271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025678282] [2023-11-19 07:58:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:44,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:44,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 249 [2023-11-19 07:58:44,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 159 flow. Second operand has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:44,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:44,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 249 [2023-11-19 07:58:44,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:48,526 INFO L124 PetriNetUnfolderBase]: 20212/29057 cut-off events. [2023-11-19 07:58:48,526 INFO L125 PetriNetUnfolderBase]: For 11793/11793 co-relation queries the response was YES. [2023-11-19 07:58:48,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62474 conditions, 29057 events. 20212/29057 cut-off events. For 11793/11793 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 169356 event pairs, 19119 based on Foata normal form. 0/28802 useless extension candidates. Maximal degree in co-relation 19368. Up to 27410 conditions per place. [2023-11-19 07:58:48,618 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 17 selfloop transitions, 0 changer transitions 11/30 dead transitions. [2023-11-19 07:58:48,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 205 flow [2023-11-19 07:58:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 277 transitions. [2023-11-19 07:58:48,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562248995983936 [2023-11-19 07:58:48,621 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 277 transitions. [2023-11-19 07:58:48,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 277 transitions. [2023-11-19 07:58:48,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:48,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 277 transitions. [2023-11-19 07:58:48,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,625 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,625 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 159 flow. Second operand 2 states and 277 transitions. [2023-11-19 07:58:48,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 205 flow [2023-11-19 07:58:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:48,633 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 108 flow [2023-11-19 07:58:48,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-11-19 07:58:48,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-19 07:58:48,634 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 108 flow [2023-11-19 07:58:48,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:48,635 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:48,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:58:48,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-19 07:58:48,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2117877295, now seen corresponding path program 1 times [2023-11-19 07:58:48,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:48,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418928244] [2023-11-19 07:58:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:48,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:48,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:48,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:48,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:48,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:58:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:58:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:58:48,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:58:48,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:58:48,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:58:48,735 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:48,736 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:48,736 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-11-19 07:58:48,758 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 07:58:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 148 transitions, 408 flow [2023-11-19 07:58:51,456 INFO L124 PetriNetUnfolderBase]: 1043/11011 cut-off events. [2023-11-19 07:58:51,457 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-11-19 07:58:51,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 11011 events. 1043/11011 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 108235 event pairs, 522 based on Foata normal form. 0/9703 useless extension candidates. Maximal degree in co-relation 6025. Up to 1024 conditions per place. [2023-11-19 07:58:51,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 148 transitions, 408 flow [2023-11-19 07:58:51,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 139 transitions, 390 flow [2023-11-19 07:58:51,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:51,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 139 transitions, 390 flow [2023-11-19 07:58:51,510 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 139 transitions, 390 flow [2023-11-19 07:58:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 139 transitions, 390 flow [2023-11-19 07:58:53,606 INFO L124 PetriNetUnfolderBase]: 1043/8707 cut-off events. [2023-11-19 07:58:53,606 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-11-19 07:58:53,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 8707 events. 1043/8707 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 78411 event pairs, 522 based on Foata normal form. 0/7655 useless extension candidates. Maximal degree in co-relation 4873. Up to 1024 conditions per place. [2023-11-19 07:58:53,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920