./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/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_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/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_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/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 3e10ed02255b37a861fcd919e1a26aad90b67620d926f632b070967147a10b69 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:12,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:12,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:44:12,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:12,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:12,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:12,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:12,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:12,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:12,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:12,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:12,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:12,460 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:12,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:12,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:12,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:12,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:12,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:12,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:12,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:12,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:12,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:12,466 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:44:12,467 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:44:12,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:12,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:12,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:12,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:12,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:12,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:12,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:12,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:12,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:12,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:12,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:12,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:12,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:12,474 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:12,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:12,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:12,476 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:12,477 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_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e10ed02255b37a861fcd919e1a26aad90b67620d926f632b070967147a10b69 [2023-11-19 07:44:12,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:12,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:12,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:12,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:12,831 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:12,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/25_stack_longest-1-pthread.i [2023-11-19 07:44:16,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:16,373 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:16,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/sv-benchmarks/c/pthread-ext/25_stack_longest-1-pthread.i [2023-11-19 07:44:16,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/data/8b6da2003/0bb691214a33484489a755308f92f3f6/FLAGdfafc20c0 [2023-11-19 07:44:16,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/data/8b6da2003/0bb691214a33484489a755308f92f3f6 [2023-11-19 07:44:16,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:16,425 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:16,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:16,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:16,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:16,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ff913e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16, skipping insertion in model container [2023-11-19 07:44:16,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,508 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:16,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:16,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:17,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:17,047 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:17,047 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:17,055 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:17,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17 WrapperNode [2023-11-19 07:44:17,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:17,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:17,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:17,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:17,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,137 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 161 [2023-11-19 07:44:17,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:17,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:17,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:17,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:17,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:17,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:17,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:17,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:17,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (1/1) ... [2023-11-19 07:44:17,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:17,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:17,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a3aa5b7-88d1-4d27-abf4-8a63a21df6e3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:44:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:44:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:44:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:44:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:44:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:17,291 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 07:44:17,554 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:17,556 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:17,823 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:17,980 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:17,981 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:44:17,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:17 BoogieIcfgContainer [2023-11-19 07:44:17,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:17,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:17,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:17,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:17,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:16" (1/3) ... [2023-11-19 07:44:17,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5036bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:17, skipping insertion in model container [2023-11-19 07:44:17,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:17" (2/3) ... [2023-11-19 07:44:17,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5036bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:17, skipping insertion in model container [2023-11-19 07:44:17,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:17" (3/3) ... [2023-11-19 07:44:17,998 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-1-pthread.i [2023-11-19 07:44:18,009 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:18,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:18,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:44:18,023 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:18,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:18,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,260 INFO L124 PetriNetUnfolderBase]: 8/164 cut-off events. [2023-11-19 07:44:18,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:18,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 164 events. 8/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 187 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-11-19 07:44:18,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:18,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 153 transitions, 310 flow [2023-11-19 07:44:18,346 INFO L124 PetriNetUnfolderBase]: 8/164 cut-off events. [2023-11-19 07:44:18,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:18,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 164 events. 8/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 187 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-11-19 07:44:18,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 3108 [2023-11-19 07:44:26,713 INFO L134 LiptonReduction]: Checked pairs total: 2952 [2023-11-19 07:44:26,713 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-19 07:44:26,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:26,735 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;@54ebec20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:26,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 07:44:26,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:26,739 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:44:26,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:26,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:26,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:44:26,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:44:26,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash 22889279, now seen corresponding path program 1 times [2023-11-19 07:44:26,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622770610] [2023-11-19 07:44:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:26,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:26,959 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 07:44:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622770610] [2023-11-19 07:44:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622770610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:26,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867801730] [2023-11-19 07:44:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:26,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:44:26,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:44:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:44:27,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 340 [2023-11-19 07:44:27,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 146.0) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:27,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:27,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 340 [2023-11-19 07:44:27,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:27,057 INFO L124 PetriNetUnfolderBase]: 7/21 cut-off events. [2023-11-19 07:44:27,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:27,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 21 events. 7/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 34 event pairs, 4 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 07:44:27,059 INFO L140 encePairwiseOnDemand]: 326/340 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 07:44:27,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 07:44:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:44:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:44:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-19 07:44:27,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45441176470588235 [2023-11-19 07:44:27,088 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-19 07:44:27,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-19 07:44:27,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:27,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-19 07:44:27,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:27,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:27,107 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:27,110 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 48 flow. Second operand 2 states and 309 transitions. [2023-11-19 07:44:27,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 07:44:27,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:27,115 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 07:44:27,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 07:44:27,121 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -12 predicate places. [2023-11-19 07:44:27,121 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 07:44:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.0) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:27,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:27,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:44:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:27,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:44:27,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 521687896, now seen corresponding path program 1 times [2023-11-19 07:44:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:27,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529825798] [2023-11-19 07:44:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:27,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:44:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:27,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:44:27,211 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:44:27,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-19 07:44:27,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-19 07:44:27,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-19 07:44:27,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-19 07:44:27,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-19 07:44:27,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-19 07:44:27,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-19 07:44:27,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-19 07:44:27,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-19 07:44:27,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-19 07:44:27,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-19 07:44:27,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-19 07:44:27,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-19 07:44:27,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-19 07:44:27,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-19 07:44:27,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-19 07:44:27,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-19 07:44:27,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-19 07:44:27,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-19 07:44:27,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-19 07:44:27,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-19 07:44:27,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-19 07:44:27,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-19 07:44:27,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-19 07:44:27,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-19 07:44:27,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:27,227 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:44:27,230 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:44:27,231 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:44:27,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:27,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,408 INFO L124 PetriNetUnfolderBase]: 15/289 cut-off events. [2023-11-19 07:44:27,409 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:44:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 289 events. 15/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 729 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 235. Up to 6 conditions per place. [2023-11-19 07:44:27,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:27,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 265 transitions, 540 flow [2023-11-19 07:44:27,516 INFO L124 PetriNetUnfolderBase]: 15/289 cut-off events. [2023-11-19 07:44:27,516 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:44:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 289 events. 15/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 729 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 235. Up to 6 conditions per place. [2023-11-19 07:44:27,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 31080 [2023-11-19 07:44:32,434 INFO L134 LiptonReduction]: Checked pairs total: 110189 [2023-11-19 07:44:32,434 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-19 07:44:32,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:32,438 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;@54ebec20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:32,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-19 07:44:32,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:32,450 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:44:32,450 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:32,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:32,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:44:32,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-19 07:44:32,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash -94096563, now seen corresponding path program 1 times [2023-11-19 07:44:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117216199] [2023-11-19 07:44:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:32,521 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 07:44:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117216199] [2023-11-19 07:44:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117216199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706642856] [2023-11-19 07:44:32,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:32,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:32,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 433 [2023-11-19 07:44:32,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 122 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:32,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 433 [2023-11-19 07:44:32,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:33,950 INFO L124 PetriNetUnfolderBase]: 3892/8972 cut-off events. [2023-11-19 07:44:33,950 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-19 07:44:33,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15197 conditions, 8972 events. 3892/8972 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 82161 event pairs, 1477 based on Foata normal form. 0/7480 useless extension candidates. Maximal degree in co-relation 13460. Up to 3157 conditions per place. [2023-11-19 07:44:34,034 INFO L140 encePairwiseOnDemand]: 418/433 looper letters, 108 selfloop transitions, 6 changer transitions 0/170 dead transitions. [2023-11-19 07:44:34,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 170 transitions, 583 flow [2023-11-19 07:44:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-11-19 07:44:34,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6566589684372595 [2023-11-19 07:44:34,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-11-19 07:44:34,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-11-19 07:44:34,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:34,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-11-19 07:44:34,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:34,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:34,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:34,055 INFO L175 Difference]: Start difference. First operand has 117 places, 122 transitions, 254 flow. Second operand 3 states and 853 transitions. [2023-11-19 07:44:34,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 170 transitions, 583 flow [2023-11-19 07:44:34,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:34,064 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 292 flow [2023-11-19 07:44:34,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2023-11-19 07:44:34,065 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -1 predicate places. [2023-11-19 07:44:34,066 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 292 flow [2023-11-19 07:44:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:34,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:34,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:34,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:44:34,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-19 07:44:34,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash -40443580, now seen corresponding path program 1 times [2023-11-19 07:44:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:34,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604981652] [2023-11-19 07:44:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:34,193 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 07:44:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:34,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604981652] [2023-11-19 07:44:34,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604981652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:34,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:34,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:34,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956039808] [2023-11-19 07:44:34,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:34,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 433 [2023-11-19 07:44:34,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:34,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:34,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 433 [2023-11-19 07:44:34,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:35,540 INFO L124 PetriNetUnfolderBase]: 4044/9175 cut-off events. [2023-11-19 07:44:35,541 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-11-19 07:44:35,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16188 conditions, 9175 events. 4044/9175 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 83677 event pairs, 2894 based on Foata normal form. 0/7651 useless extension candidates. Maximal degree in co-relation 7186. Up to 6199 conditions per place. [2023-11-19 07:44:35,643 INFO L140 encePairwiseOnDemand]: 426/433 looper letters, 83 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2023-11-19 07:44:35,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 150 transitions, 535 flow [2023-11-19 07:44:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-11-19 07:44:35,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6189376443418014 [2023-11-19 07:44:35,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-11-19 07:44:35,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-11-19 07:44:35,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:35,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-11-19 07:44:35,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,660 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 292 flow. Second operand 3 states and 804 transitions. [2023-11-19 07:44:35,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 150 transitions, 535 flow [2023-11-19 07:44:35,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 150 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:35,674 INFO L231 Difference]: Finished difference. Result has 117 places, 126 transitions, 320 flow [2023-11-19 07:44:35,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=117, PETRI_TRANSITIONS=126} [2023-11-19 07:44:35,677 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 0 predicate places. [2023-11-19 07:44:35,678 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 126 transitions, 320 flow [2023-11-19 07:44:35,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:35,679 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:44:35,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:44:35,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-19 07:44:35,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1408501262, now seen corresponding path program 1 times [2023-11-19 07:44:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276203079] [2023-11-19 07:44:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:35,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:35,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:44:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:35,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:44:35,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:44:35,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2023-11-19 07:44:35,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2023-11-19 07:44:35,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2023-11-19 07:44:35,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2023-11-19 07:44:35,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2023-11-19 07:44:35,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2023-11-19 07:44:35,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2023-11-19 07:44:35,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2023-11-19 07:44:35,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2023-11-19 07:44:35,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2023-11-19 07:44:35,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2023-11-19 07:44:35,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2023-11-19 07:44:35,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2023-11-19 07:44:35,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2023-11-19 07:44:35,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2023-11-19 07:44:35,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2023-11-19 07:44:35,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2023-11-19 07:44:35,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2023-11-19 07:44:35,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2023-11-19 07:44:35,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2023-11-19 07:44:35,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2023-11-19 07:44:35,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2023-11-19 07:44:35,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2023-11-19 07:44:35,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2023-11-19 07:44:35,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2023-11-19 07:44:35,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2023-11-19 07:44:35,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2023-11-19 07:44:35,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2023-11-19 07:44:35,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2023-11-19 07:44:35,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2023-11-19 07:44:35,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2023-11-19 07:44:35,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2023-11-19 07:44:35,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2023-11-19 07:44:35,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2023-11-19 07:44:35,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2023-11-19 07:44:35,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2023-11-19 07:44:35,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2023-11-19 07:44:35,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:44:35,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:44:35,817 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:44:35,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:44:35,902 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:35,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,061 INFO L124 PetriNetUnfolderBase]: 22/414 cut-off events. [2023-11-19 07:44:36,062 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:44:36,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 414 events. 22/414 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1432 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 346. Up to 8 conditions per place. [2023-11-19 07:44:36,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:36,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 377 transitions, 772 flow [2023-11-19 07:44:36,274 INFO L124 PetriNetUnfolderBase]: 22/414 cut-off events. [2023-11-19 07:44:36,274 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:44:36,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 414 events. 22/414 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1432 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 346. Up to 8 conditions per place. [2023-11-19 07:44:36,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 83916 [2023-11-19 07:44:42,708 INFO L134 LiptonReduction]: Checked pairs total: 309237 [2023-11-19 07:44:42,708 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-11-19 07:44:42,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:42,711 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;@54ebec20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:42,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-19 07:44:42,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:42,714 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:44:42,714 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:42,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:42,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:44:42,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-19 07:44:42,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash -195015329, now seen corresponding path program 1 times [2023-11-19 07:44:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19910162] [2023-11-19 07:44:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,743 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 07:44:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19910162] [2023-11-19 07:44:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19910162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:42,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065225582] [2023-11-19 07:44:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:42,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:42,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 611 [2023-11-19 07:44:42,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:42,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 611 [2023-11-19 07:44:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand