./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme --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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:39,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:39,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:56:39,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:39,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:39,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:39,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:39,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:39,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:56:39,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:56:39,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:39,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:39,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:39,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:39,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:56:39,561 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:56:39,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:39,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:56:39,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:39,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:56:39,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:56:39,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:56:39,565 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:56:39,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:56:39,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:56:39,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:56:39,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:39,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:39,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:39,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:56:39,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:39,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:39,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:56:39,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:56:39,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:39,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:56:39,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:56:39,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:56:39,572 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:56:39,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:56:39,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:56:39,573 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_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2023-11-26 11:56:39,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:39,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:39,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:39,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:39,882 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:39,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread/singleton.i [2023-11-26 11:56:43,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:43,413 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:43,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/sv-benchmarks/c/pthread/singleton.i [2023-11-26 11:56:43,437 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/data/fb588a4c3/afb1411114d94242812d4ddbe3ede4b5/FLAG7adfee510 [2023-11-26 11:56:43,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/data/fb588a4c3/afb1411114d94242812d4ddbe3ede4b5 [2023-11-26 11:56:43,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:43,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:43,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:43,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:43,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:43,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:43" (1/1) ... [2023-11-26 11:56:43,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5579e894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:43, skipping insertion in model container [2023-11-26 11:56:43,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:43" (1/1) ... [2023-11-26 11:56:43,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:44,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:44,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:44,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:44,375 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:44,376 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:44,388 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:44,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44 WrapperNode [2023-11-26 11:56:44,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:44,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:44,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:44,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:44,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,449 INFO L138 Inliner]: procedures = 324, calls = 52, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-11-26 11:56:44,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:44,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:44,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:44,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:44,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:44,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:44,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:44,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:44,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (1/1) ... [2023-11-26 11:56:44,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:44,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:44,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3021e556-bb42-40b6-850e-ad3390e024ef/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:56:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:56:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:56:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:56:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:56:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-26 11:56:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-26 11:56:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:56:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:56:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:56:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:56:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:56:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:56:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:56:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:56:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:56:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:44,644 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:56:44,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:44,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:45,329 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:45,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:45,396 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:56:45,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:45 BoogieIcfgContainer [2023-11-26 11:56:45,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:45,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:45,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:45,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:45,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:56:43" (1/3) ... [2023-11-26 11:56:45,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3642b064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:45, skipping insertion in model container [2023-11-26 11:56:45,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:44" (2/3) ... [2023-11-26 11:56:45,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3642b064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:45, skipping insertion in model container [2023-11-26 11:56:45,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:45" (3/3) ... [2023-11-26 11:56:45,410 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2023-11-26 11:56:45,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:56:45,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:45,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-26 11:56:45,433 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:56:45,640 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-26 11:56:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 273 transitions, 643 flow [2023-11-26 11:56:45,776 INFO L124 PetriNetUnfolderBase]: 7/186 cut-off events. [2023-11-26 11:56:45,776 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:56:45,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 186 events. 7/186 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-11-26 11:56:45,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 273 transitions, 643 flow [2023-11-26 11:56:45,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 164 transitions, 379 flow [2023-11-26 11:56:45,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:45,807 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;@f52d1fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:45,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-26 11:56:45,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:56:45,816 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-11-26 11:56:45,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:56:45,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:45,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:45,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:56:45,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1514420532, now seen corresponding path program 1 times [2023-11-26 11:56:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395119353] [2023-11-26 11:56:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:46,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395119353] [2023-11-26 11:56:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395119353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:46,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:46,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:56:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411475537] [2023-11-26 11:56:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:46,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:56:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:56:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:56:47,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 275 [2023-11-26 11:56:47,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 164 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:47,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:47,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 275 [2023-11-26 11:56:47,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:48,690 INFO L124 PetriNetUnfolderBase]: 1178/3202 cut-off events. [2023-11-26 11:56:48,690 INFO L125 PetriNetUnfolderBase]: For 808/1073 co-relation queries the response was YES. [2023-11-26 11:56:48,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5626 conditions, 3202 events. 1178/3202 cut-off events. For 808/1073 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 21994 event pairs, 229 based on Foata normal form. 4/2775 useless extension candidates. Maximal degree in co-relation 5579. Up to 1195 conditions per place. [2023-11-26 11:56:48,731 INFO L140 encePairwiseOnDemand]: 257/275 looper letters, 89 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2023-11-26 11:56:48,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 237 transitions, 928 flow [2023-11-26 11:56:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:56:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1465 transitions. [2023-11-26 11:56:48,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8878787878787879 [2023-11-26 11:56:48,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1465 transitions. [2023-11-26 11:56:48,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1465 transitions. [2023-11-26 11:56:48,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:48,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1465 transitions. [2023-11-26 11:56:48,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.16666666666666) internal successors, (1465), 6 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:48,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:48,778 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:48,781 INFO L175 Difference]: Start difference. First operand has 178 places, 164 transitions, 379 flow. Second operand 6 states and 1465 transitions. [2023-11-26 11:56:48,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 237 transitions, 928 flow [2023-11-26 11:56:48,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 237 transitions, 772 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-26 11:56:48,799 INFO L231 Difference]: Finished difference. Result has 168 places, 176 transitions, 471 flow [2023-11-26 11:56:48,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=168, PETRI_TRANSITIONS=176} [2023-11-26 11:56:48,805 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, -10 predicate places. [2023-11-26 11:56:48,805 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 176 transitions, 471 flow [2023-11-26 11:56:48,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:48,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:48,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:48,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:56:48,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:56:48,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:48,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1195813822, now seen corresponding path program 1 times [2023-11-26 11:56:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737030502] [2023-11-26 11:56:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:48,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:48,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737030502] [2023-11-26 11:56:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737030502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:48,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:48,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155780715] [2023-11-26 11:56:48,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:48,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 275 [2023-11-26 11:56:48,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 176 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:48,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:48,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 275 [2023-11-26 11:56:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:49,420 INFO L124 PetriNetUnfolderBase]: 782/2143 cut-off events. [2023-11-26 11:56:49,421 INFO L125 PetriNetUnfolderBase]: For 1156/1333 co-relation queries the response was YES. [2023-11-26 11:56:49,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4647 conditions, 2143 events. 782/2143 cut-off events. For 1156/1333 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13575 event pairs, 306 based on Foata normal form. 0/1958 useless extension candidates. Maximal degree in co-relation 2961. Up to 939 conditions per place. [2023-11-26 11:56:49,458 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 40 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2023-11-26 11:56:49,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 175 transitions, 553 flow [2023-11-26 11:56:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-11-26 11:56:49,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8436363636363636 [2023-11-26 11:56:49,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-11-26 11:56:49,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-11-26 11:56:49,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:49,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-11-26 11:56:49,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:49,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:49,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:49,472 INFO L175 Difference]: Start difference. First operand has 168 places, 176 transitions, 471 flow. Second operand 3 states and 696 transitions. [2023-11-26 11:56:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 175 transitions, 553 flow [2023-11-26 11:56:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 175 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:56:49,486 INFO L231 Difference]: Finished difference. Result has 169 places, 175 transitions, 473 flow [2023-11-26 11:56:49,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=169, PETRI_TRANSITIONS=175} [2023-11-26 11:56:49,488 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, -9 predicate places. [2023-11-26 11:56:49,489 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 175 transitions, 473 flow [2023-11-26 11:56:49,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:49,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:49,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:56:49,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:56:49,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash 146009635, now seen corresponding path program 1 times [2023-11-26 11:56:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27421417] [2023-11-26 11:56:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27421417] [2023-11-26 11:56:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27421417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:50,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:50,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:56:50,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461459910] [2023-11-26 11:56:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:50,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:56:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:56:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:56:50,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 275 [2023-11-26 11:56:50,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 175 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:50,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:50,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 275 [2023-11-26 11:56:50,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:51,126 INFO L124 PetriNetUnfolderBase]: 759/2207 cut-off events. [2023-11-26 11:56:51,127 INFO L125 PetriNetUnfolderBase]: For 1259/1373 co-relation queries the response was YES. [2023-11-26 11:56:51,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 2207 events. 759/2207 cut-off events. For 1259/1373 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15090 event pairs, 174 based on Foata normal form. 4/1997 useless extension candidates. Maximal degree in co-relation 4611. Up to 934 conditions per place. [2023-11-26 11:56:51,207 INFO L140 encePairwiseOnDemand]: 266/275 looper letters, 43 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2023-11-26 11:56:51,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 197 transitions, 726 flow [2023-11-26 11:56:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:56:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1362 transitions. [2023-11-26 11:56:51,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8254545454545454 [2023-11-26 11:56:51,213 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1362 transitions. [2023-11-26 11:56:51,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1362 transitions. [2023-11-26 11:56:51,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:51,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1362 transitions. [2023-11-26 11:56:51,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:51,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:51,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:51,226 INFO L175 Difference]: Start difference. First operand has 169 places, 175 transitions, 473 flow. Second operand 6 states and 1362 transitions. [2023-11-26 11:56:51,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 197 transitions, 726 flow [2023-11-26 11:56:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 197 transitions, 722 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:51,236 INFO L231 Difference]: Finished difference. Result has 172 places, 194 transitions, 688 flow [2023-11-26 11:56:51,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=172, PETRI_TRANSITIONS=194} [2023-11-26 11:56:51,239 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, -6 predicate places. [2023-11-26 11:56:51,239 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 194 transitions, 688 flow [2023-11-26 11:56:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:51,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:51,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:56:51,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:56:51,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 982132393, now seen corresponding path program 1 times [2023-11-26 11:56:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535710980] [2023-11-26 11:56:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535710980] [2023-11-26 11:56:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535710980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:56:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271259854] [2023-11-26 11:56:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:56:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:56:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:56:55,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 275 [2023-11-26 11:56:55,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 194 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:55,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:55,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 275 [2023-11-26 11:56:55,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:57,676 INFO L124 PetriNetUnfolderBase]: 1749/4611 cut-off events. [2023-11-26 11:56:57,676 INFO L125 PetriNetUnfolderBase]: For 3044/3226 co-relation queries the response was YES. [2023-11-26 11:56:57,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11398 conditions, 4611 events. 1749/4611 cut-off events. For 3044/3226 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 34515 event pairs, 444 based on Foata normal form. 107/4061 useless extension candidates. Maximal degree in co-relation 4882. Up to 1196 conditions per place. [2023-11-26 11:56:57,735 INFO L140 encePairwiseOnDemand]: 257/275 looper letters, 206 selfloop transitions, 55 changer transitions 0/375 dead transitions. [2023-11-26 11:56:57,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 375 transitions, 1858 flow [2023-11-26 11:56:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:56:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-26 11:56:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3656 transitions. [2023-11-26 11:56:57,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7820320855614973 [2023-11-26 11:56:57,748 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3656 transitions. [2023-11-26 11:56:57,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3656 transitions. [2023-11-26 11:56:57,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:57,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3656 transitions. [2023-11-26 11:56:57,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 215.05882352941177) internal successors, (3656), 17 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:57,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 275.0) internal successors, (4950), 18 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:57,776 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 275.0) internal successors, (4950), 18 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:57,777 INFO L175 Difference]: Start difference. First operand has 172 places, 194 transitions, 688 flow. Second operand 17 states and 3656 transitions. [2023-11-26 11:56:57,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 375 transitions, 1858 flow [2023-11-26 11:56:57,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 375 transitions, 1823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:56:57,793 INFO L231 Difference]: Finished difference. Result has 198 places, 224 transitions, 1068 flow [2023-11-26 11:56:57,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1068, PETRI_PLACES=198, PETRI_TRANSITIONS=224} [2023-11-26 11:56:57,795 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, 20 predicate places. [2023-11-26 11:56:57,795 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 224 transitions, 1068 flow [2023-11-26 11:56:57,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:57,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:57,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:56:57,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:56:57,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1691742273, now seen corresponding path program 2 times [2023-11-26 11:56:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973360636] [2023-11-26 11:56:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973360636] [2023-11-26 11:56:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973360636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:56:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140079817] [2023-11-26 11:56:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:56:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:56:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:02,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 275 [2023-11-26 11:57:02,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 224 transitions, 1068 flow. Second operand has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:02,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:02,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 275 [2023-11-26 11:57:02,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:04,711 INFO L124 PetriNetUnfolderBase]: 2508/6716 cut-off events. [2023-11-26 11:57:04,711 INFO L125 PetriNetUnfolderBase]: For 9593/10057 co-relation queries the response was YES. [2023-11-26 11:57:04,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19072 conditions, 6716 events. 2508/6716 cut-off events. For 9593/10057 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 54815 event pairs, 665 based on Foata normal form. 63/5823 useless extension candidates. Maximal degree in co-relation 18123. Up to 1881 conditions per place. [2023-11-26 11:57:04,816 INFO L140 encePairwiseOnDemand]: 258/275 looper letters, 264 selfloop transitions, 100 changer transitions 0/478 dead transitions. [2023-11-26 11:57:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 478 transitions, 3271 flow [2023-11-26 11:57:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:57:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-26 11:57:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4882 transitions. [2023-11-26 11:57:04,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7718577075098815 [2023-11-26 11:57:04,832 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4882 transitions. [2023-11-26 11:57:04,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4882 transitions. [2023-11-26 11:57:04,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:04,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4882 transitions. [2023-11-26 11:57:04,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 212.2608695652174) internal successors, (4882), 23 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:04,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 275.0) internal successors, (6600), 24 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:04,871 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 275.0) internal successors, (6600), 24 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:04,871 INFO L175 Difference]: Start difference. First operand has 198 places, 224 transitions, 1068 flow. Second operand 23 states and 4882 transitions. [2023-11-26 11:57:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 478 transitions, 3271 flow [2023-11-26 11:57:04,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 478 transitions, 3271 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:57:04,926 INFO L231 Difference]: Finished difference. Result has 237 places, 307 transitions, 2276 flow [2023-11-26 11:57:04,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2276, PETRI_PLACES=237, PETRI_TRANSITIONS=307} [2023-11-26 11:57:04,928 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, 59 predicate places. [2023-11-26 11:57:04,928 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 307 transitions, 2276 flow [2023-11-26 11:57:04,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:04,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:04,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:04,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:57:04,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:57:04,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1242524183, now seen corresponding path program 3 times [2023-11-26 11:57:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:04,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350057288] [2023-11-26 11:57:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:05,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350057288] [2023-11-26 11:57:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350057288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:05,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:57:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511405426] [2023-11-26 11:57:05,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:05,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:57:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:57:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:08,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 275 [2023-11-26 11:57:08,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 307 transitions, 2276 flow. Second operand has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:08,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:08,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 275 [2023-11-26 11:57:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:12,097 INFO L124 PetriNetUnfolderBase]: 3334/9129 cut-off events. [2023-11-26 11:57:12,097 INFO L125 PetriNetUnfolderBase]: For 25988/26593 co-relation queries the response was YES. [2023-11-26 11:57:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29033 conditions, 9129 events. 3334/9129 cut-off events. For 25988/26593 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 80009 event pairs, 929 based on Foata normal form. 84/7909 useless extension candidates. Maximal degree in co-relation 28112. Up to 2165 conditions per place. [2023-11-26 11:57:12,219 INFO L140 encePairwiseOnDemand]: 258/275 looper letters, 307 selfloop transitions, 149 changer transitions 0/570 dead transitions. [2023-11-26 11:57:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 570 transitions, 5289 flow [2023-11-26 11:57:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:57:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-26 11:57:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4887 transitions. [2023-11-26 11:57:12,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7726482213438736 [2023-11-26 11:57:12,235 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4887 transitions. [2023-11-26 11:57:12,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4887 transitions. [2023-11-26 11:57:12,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:12,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4887 transitions. [2023-11-26 11:57:12,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 212.47826086956522) internal successors, (4887), 23 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:12,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 275.0) internal successors, (6600), 24 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:12,268 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 275.0) internal successors, (6600), 24 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:12,268 INFO L175 Difference]: Start difference. First operand has 237 places, 307 transitions, 2276 flow. Second operand 23 states and 4887 transitions. [2023-11-26 11:57:12,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 570 transitions, 5289 flow [2023-11-26 11:57:12,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 570 transitions, 5255 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-26 11:57:12,426 INFO L231 Difference]: Finished difference. Result has 275 places, 385 transitions, 3746 flow [2023-11-26 11:57:12,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3746, PETRI_PLACES=275, PETRI_TRANSITIONS=385} [2023-11-26 11:57:12,430 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, 97 predicate places. [2023-11-26 11:57:12,430 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 385 transitions, 3746 flow [2023-11-26 11:57:12,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:12,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:12,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:12,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:57:12,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:57:12,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash -138496157, now seen corresponding path program 4 times [2023-11-26 11:57:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605752529] [2023-11-26 11:57:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605752529] [2023-11-26 11:57:13,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605752529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:13,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:57:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238851377] [2023-11-26 11:57:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:13,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:57:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:57:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:15,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 275 [2023-11-26 11:57:15,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 385 transitions, 3746 flow. Second operand has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:15,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:15,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 275 [2023-11-26 11:57:15,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:20,063 INFO L124 PetriNetUnfolderBase]: 4378/11427 cut-off events. [2023-11-26 11:57:20,063 INFO L125 PetriNetUnfolderBase]: For 50027/51083 co-relation queries the response was YES. [2023-11-26 11:57:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41063 conditions, 11427 events. 4378/11427 cut-off events. For 50027/51083 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 102982 event pairs, 1251 based on Foata normal form. 126/9872 useless extension candidates. Maximal degree in co-relation 39773. Up to 2805 conditions per place. [2023-11-26 11:57:20,319 INFO L140 encePairwiseOnDemand]: 258/275 looper letters, 352 selfloop transitions, 182 changer transitions 0/648 dead transitions. [2023-11-26 11:57:20,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 648 transitions, 7307 flow [2023-11-26 11:57:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 11:57:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-26 11:57:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5085 transitions. [2023-11-26 11:57:20,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7704545454545455 [2023-11-26 11:57:20,336 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5085 transitions. [2023-11-26 11:57:20,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5085 transitions. [2023-11-26 11:57:20,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:20,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5085 transitions. [2023-11-26 11:57:20,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 211.875) internal successors, (5085), 24 states have internal predecessors, (5085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:20,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:20,484 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:20,485 INFO L175 Difference]: Start difference. First operand has 275 places, 385 transitions, 3746 flow. Second operand 24 states and 5085 transitions. [2023-11-26 11:57:20,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 648 transitions, 7307 flow [2023-11-26 11:57:20,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 648 transitions, 7127 flow, removed 80 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:21,007 INFO L231 Difference]: Finished difference. Result has 316 places, 456 transitions, 5383 flow [2023-11-26 11:57:21,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5383, PETRI_PLACES=316, PETRI_TRANSITIONS=456} [2023-11-26 11:57:21,008 INFO L281 CegarLoopForPetriNet]: 178 programPoint places, 138 predicate places. [2023-11-26 11:57:21,009 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 456 transitions, 5383 flow [2023-11-26 11:57:21,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:21,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:21,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:57:21,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-26 11:57:21,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1057360239, now seen corresponding path program 5 times [2023-11-26 11:57:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:21,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265584774] [2023-11-26 11:57:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:22,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265584774] [2023-11-26 11:57:22,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265584774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:22,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:57:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625934829] [2023-11-26 11:57:22,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:22,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:57:22,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:57:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:24,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 275 [2023-11-26 11:57:24,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 456 transitions, 5383 flow. Second operand has 12 states, 12 states have (on average 203.5) internal successors, (2442), 12 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:24,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:24,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 275 [2023-11-26 11:57:24,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand