./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.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_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/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_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/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_55ddaa76-7297-476b-9457-2ca68abcfc88/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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:27,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:27,500 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 10:41:27,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:27,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:27,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:27,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:27,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:27,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:27,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:27,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:27,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:27,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:27,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:27,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:27,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:27,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:27,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:27,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:27,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:27,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:27,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:27,569 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 10:41:27,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:27,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:27,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:27,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:27,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:27,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:27,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:27,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:27,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:27,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:27,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:27,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:27,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:27,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:27,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:27,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:27,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:27,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:27,599 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_55ddaa76-7297-476b-9457-2ca68abcfc88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-26 10:41:27,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:27,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:27,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:27,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:27,987 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:27,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-26 10:41:31,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:31,474 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:31,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-26 10:41:31,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/data/a7c56890b/bd4d46125793490f8015204501a637c9/FLAG8ca9f83d3 [2023-11-26 10:41:31,525 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/data/a7c56890b/bd4d46125793490f8015204501a637c9 [2023-11-26 10:41:31,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:31,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:31,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:31,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:31,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:31,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:31" (1/1) ... [2023-11-26 10:41:31,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d92c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:31, skipping insertion in model container [2023-11-26 10:41:31,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:31" (1/1) ... [2023-11-26 10:41:31,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:32,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:32,331 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:32,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:32,542 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:32,542 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:32,551 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:32,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32 WrapperNode [2023-11-26 10:41:32,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:32,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:32,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:32,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:32,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,614 INFO L138 Inliner]: procedures = 324, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-26 10:41:32,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:32,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:32,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:32,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:32,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:32,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:32,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:32,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:32,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (1/1) ... [2023-11-26 10:41:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:32,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:32,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55ddaa76-7297-476b-9457-2ca68abcfc88/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:41:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:41:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:41:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:41:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:41:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-26 10:41:32,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-26 10:41:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:41:32,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:41:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:41:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:41:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:41:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:41:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:41:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:41:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:41:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:32,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:32,745 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 10:41:32,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:32,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:33,384 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:33,438 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:33,438 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:41:33,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:33 BoogieIcfgContainer [2023-11-26 10:41:33,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:33,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:33,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:33,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:33,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:31" (1/3) ... [2023-11-26 10:41:33,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6a2801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:33, skipping insertion in model container [2023-11-26 10:41:33,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:32" (2/3) ... [2023-11-26 10:41:33,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6a2801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:33, skipping insertion in model container [2023-11-26 10:41:33,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:33" (3/3) ... [2023-11-26 10:41:33,455 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-26 10:41:33,464 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:41:33,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:33,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-26 10:41:33,477 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:41:33,694 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-26 10:41:33,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 286 transitions, 669 flow [2023-11-26 10:41:33,889 INFO L124 PetriNetUnfolderBase]: 8/199 cut-off events. [2023-11-26 10:41:33,889 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:41:33,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 199 events. 8/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-11-26 10:41:33,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 286 transitions, 669 flow [2023-11-26 10:41:33,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 173 transitions, 397 flow [2023-11-26 10:41:33,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:33,935 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;@57f589e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:33,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-26 10:41:33,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:41:33,959 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-11-26 10:41:33,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:41:33,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:33,961 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 10:41:33,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:33,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash 801025672, now seen corresponding path program 1 times [2023-11-26 10:41:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40396722] [2023-11-26 10:41:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:33,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:35,007 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 10:41:35,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:35,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40396722] [2023-11-26 10:41:35,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40396722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:35,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190466473] [2023-11-26 10:41:35,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:35,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:36,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 288 [2023-11-26 10:41:36,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 173 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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 10:41:36,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:36,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 288 [2023-11-26 10:41:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:37,076 INFO L124 PetriNetUnfolderBase]: 1178/2722 cut-off events. [2023-11-26 10:41:37,077 INFO L125 PetriNetUnfolderBase]: For 790/1005 co-relation queries the response was YES. [2023-11-26 10:41:37,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 2722 events. 1178/2722 cut-off events. For 790/1005 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17395 event pairs, 361 based on Foata normal form. 13/2407 useless extension candidates. Maximal degree in co-relation 5081. Up to 1195 conditions per place. [2023-11-26 10:41:37,122 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 89 selfloop transitions, 21 changer transitions 0/246 dead transitions. [2023-11-26 10:41:37,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 246 transitions, 946 flow [2023-11-26 10:41:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:41:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2023-11-26 10:41:37,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8929398148148148 [2023-11-26 10:41:37,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2023-11-26 10:41:37,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2023-11-26 10:41:37,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:37,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2023-11-26 10:41:37,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 10:41:37,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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 10:41:37,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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 10:41:37,181 INFO L175 Difference]: Start difference. First operand has 187 places, 173 transitions, 397 flow. Second operand 6 states and 1543 transitions. [2023-11-26 10:41:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 246 transitions, 946 flow [2023-11-26 10:41:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 246 transitions, 790 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-26 10:41:37,214 INFO L231 Difference]: Finished difference. Result has 177 places, 185 transitions, 489 flow [2023-11-26 10:41:37,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=177, PETRI_TRANSITIONS=185} [2023-11-26 10:41:37,221 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -10 predicate places. [2023-11-26 10:41:37,221 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 185 transitions, 489 flow [2023-11-26 10:41:37,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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 10:41:37,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:37,223 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 10:41:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:37,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:37,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 464122076, now seen corresponding path program 1 times [2023-11-26 10:41:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582632291] [2023-11-26 10:41:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:37,312 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 10:41:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582632291] [2023-11-26 10:41:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582632291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:37,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:37,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418142622] [2023-11-26 10:41:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:37,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 288 [2023-11-26 10:41:37,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 185 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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 10:41:37,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:37,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 288 [2023-11-26 10:41:37,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:37,867 INFO L124 PetriNetUnfolderBase]: 769/2161 cut-off events. [2023-11-26 10:41:37,868 INFO L125 PetriNetUnfolderBase]: For 1147/1335 co-relation queries the response was YES. [2023-11-26 10:41:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2161 events. 769/2161 cut-off events. For 1147/1335 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13770 event pairs, 306 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 2955. Up to 939 conditions per place. [2023-11-26 10:41:37,907 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 41 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2023-11-26 10:41:37,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 184 transitions, 573 flow [2023-11-26 10:41:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:41:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-26 10:41:37,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8483796296296297 [2023-11-26 10:41:37,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-26 10:41:37,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-26 10:41:37,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:37,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-26 10:41:37,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 10:41:37,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 10:41:37,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 10:41:37,921 INFO L175 Difference]: Start difference. First operand has 177 places, 185 transitions, 489 flow. Second operand 3 states and 733 transitions. [2023-11-26 10:41:37,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 184 transitions, 573 flow [2023-11-26 10:41:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 573 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:41:37,934 INFO L231 Difference]: Finished difference. Result has 178 places, 184 transitions, 491 flow [2023-11-26 10:41:37,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=491, PETRI_PLACES=178, PETRI_TRANSITIONS=184} [2023-11-26 10:41:37,936 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -9 predicate places. [2023-11-26 10:41:37,936 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 184 transitions, 491 flow [2023-11-26 10:41:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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 10:41:37,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:37,938 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 10:41:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:41:37,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:37,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1911541757, now seen corresponding path program 1 times [2023-11-26 10:41:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137000884] [2023-11-26 10:41:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:38,461 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 10:41:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137000884] [2023-11-26 10:41:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137000884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549644364] [2023-11-26 10:41:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:39,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 288 [2023-11-26 10:41:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 184 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 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 10:41:39,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:39,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 288 [2023-11-26 10:41:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:39,629 INFO L124 PetriNetUnfolderBase]: 745/1973 cut-off events. [2023-11-26 10:41:39,630 INFO L125 PetriNetUnfolderBase]: For 1117/1295 co-relation queries the response was YES. [2023-11-26 10:41:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 1973 events. 745/1973 cut-off events. For 1117/1295 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12126 event pairs, 144 based on Foata normal form. 5/1804 useless extension candidates. Maximal degree in co-relation 4415. Up to 934 conditions per place. [2023-11-26 10:41:39,664 INFO L140 encePairwiseOnDemand]: 279/288 looper letters, 43 selfloop transitions, 24 changer transitions 0/206 dead transitions. [2023-11-26 10:41:39,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 206 transitions, 744 flow [2023-11-26 10:41:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:41:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1440 transitions. [2023-11-26 10:41:39,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-26 10:41:39,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1440 transitions. [2023-11-26 10:41:39,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1440 transitions. [2023-11-26 10:41:39,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:39,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1440 transitions. [2023-11-26 10:41:39,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 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 10:41:39,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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 10:41:39,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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 10:41:39,685 INFO L175 Difference]: Start difference. First operand has 178 places, 184 transitions, 491 flow. Second operand 6 states and 1440 transitions. [2023-11-26 10:41:39,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 206 transitions, 744 flow [2023-11-26 10:41:39,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 206 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:41:39,697 INFO L231 Difference]: Finished difference. Result has 181 places, 203 transitions, 706 flow [2023-11-26 10:41:39,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=181, PETRI_TRANSITIONS=203} [2023-11-26 10:41:39,699 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -6 predicate places. [2023-11-26 10:41:39,699 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 203 transitions, 706 flow [2023-11-26 10:41:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 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 10:41:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:39,701 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 10:41:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:41:39,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -24631151, now seen corresponding path program 1 times [2023-11-26 10:41:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441261206] [2023-11-26 10:41:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:40,575 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 10:41:40,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:40,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441261206] [2023-11-26 10:41:40,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441261206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:40,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:41:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643913818] [2023-11-26 10:41:40,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:40,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:41:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:41:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:42,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 288 [2023-11-26 10:41:42,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 203 transitions, 706 flow. Second operand has 10 states, 10 states have (on average 229.6) internal successors, (2296), 10 states have internal predecessors, (2296), 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 10:41:42,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:42,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 288 [2023-11-26 10:41:42,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:43,560 INFO L124 PetriNetUnfolderBase]: 1649/4209 cut-off events. [2023-11-26 10:41:43,560 INFO L125 PetriNetUnfolderBase]: For 2441/2689 co-relation queries the response was YES. [2023-11-26 10:41:43,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10264 conditions, 4209 events. 1649/4209 cut-off events. For 2441/2689 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29875 event pairs, 409 based on Foata normal form. 50/3679 useless extension candidates. Maximal degree in co-relation 6630. Up to 997 conditions per place. [2023-11-26 10:41:43,617 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 169 selfloop transitions, 26 changer transitions 0/325 dead transitions. [2023-11-26 10:41:43,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 325 transitions, 1665 flow [2023-11-26 10:41:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:41:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:41:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3784 transitions. [2023-11-26 10:41:43,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8211805555555556 [2023-11-26 10:41:43,630 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3784 transitions. [2023-11-26 10:41:43,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3784 transitions. [2023-11-26 10:41:43,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:43,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3784 transitions. [2023-11-26 10:41:43,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 236.5) internal successors, (3784), 16 states have internal predecessors, (3784), 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 10:41:43,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 288.0) internal successors, (4896), 17 states have internal predecessors, (4896), 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 10:41:43,661 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 288.0) internal successors, (4896), 17 states have internal predecessors, (4896), 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 10:41:43,661 INFO L175 Difference]: Start difference. First operand has 181 places, 203 transitions, 706 flow. Second operand 16 states and 3784 transitions. [2023-11-26 10:41:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 325 transitions, 1665 flow [2023-11-26 10:41:43,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 325 transitions, 1622 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:41:43,678 INFO L231 Difference]: Finished difference. Result has 201 places, 226 transitions, 895 flow [2023-11-26 10:41:43,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=895, PETRI_PLACES=201, PETRI_TRANSITIONS=226} [2023-11-26 10:41:43,681 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 14 predicate places. [2023-11-26 10:41:43,681 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 226 transitions, 895 flow [2023-11-26 10:41:43,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 229.6) internal successors, (2296), 10 states have internal predecessors, (2296), 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 10:41:43,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:43,683 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 10:41:43,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:41:43,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:43,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 295254821, now seen corresponding path program 2 times [2023-11-26 10:41:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653636430] [2023-11-26 10:41:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,863 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 10:41:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653636430] [2023-11-26 10:41:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653636430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:44,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:41:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757360527] [2023-11-26 10:41:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:41:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:41:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:41:47,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-26 10:41:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 226 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:41:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-26 10:41:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:49,290 INFO L124 PetriNetUnfolderBase]: 2065/5243 cut-off events. [2023-11-26 10:41:49,290 INFO L125 PetriNetUnfolderBase]: For 6069/6368 co-relation queries the response was YES. [2023-11-26 10:41:49,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 5243 events. 2065/5243 cut-off events. For 6069/6368 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38675 event pairs, 490 based on Foata normal form. 65/4613 useless extension candidates. Maximal degree in co-relation 9749. Up to 1877 conditions per place. [2023-11-26 10:41:49,354 INFO L140 encePairwiseOnDemand]: 271/288 looper letters, 215 selfloop transitions, 75 changer transitions 0/413 dead transitions. [2023-11-26 10:41:49,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 413 transitions, 2427 flow [2023-11-26 10:41:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:41:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:41:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3420 transitions. [2023-11-26 10:41:49,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2023-11-26 10:41:49,367 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3420 transitions. [2023-11-26 10:41:49,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3420 transitions. [2023-11-26 10:41:49,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:49,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3420 transitions. [2023-11-26 10:41:49,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 228.0) internal successors, (3420), 15 states have internal predecessors, (3420), 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 10:41:49,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 288.0) internal successors, (4608), 16 states have internal predecessors, (4608), 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 10:41:49,393 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 288.0) internal successors, (4608), 16 states have internal predecessors, (4608), 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 10:41:49,393 INFO L175 Difference]: Start difference. First operand has 201 places, 226 transitions, 895 flow. Second operand 15 states and 3420 transitions. [2023-11-26 10:41:49,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 413 transitions, 2427 flow [2023-11-26 10:41:49,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 413 transitions, 2410 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 10:41:49,451 INFO L231 Difference]: Finished difference. Result has 225 places, 279 transitions, 1635 flow [2023-11-26 10:41:49,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1635, PETRI_PLACES=225, PETRI_TRANSITIONS=279} [2023-11-26 10:41:49,452 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 38 predicate places. [2023-11-26 10:41:49,453 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 279 transitions, 1635 flow [2023-11-26 10:41:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:41:49,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:49,455 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 10:41:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:41:49,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:49,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1943601061, now seen corresponding path program 3 times [2023-11-26 10:41:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:49,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258358034] [2023-11-26 10:41:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:49,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:50,728 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 10:41:50,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:50,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258358034] [2023-11-26 10:41:50,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258358034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:50,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:50,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:41:50,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596051367] [2023-11-26 10:41:50,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:50,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:41:50,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:50,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:41:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:41:53,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-26 10:41:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 279 transitions, 1635 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:41:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-26 10:41:53,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:55,686 INFO L124 PetriNetUnfolderBase]: 2381/6607 cut-off events. [2023-11-26 10:41:55,687 INFO L125 PetriNetUnfolderBase]: For 14251/14574 co-relation queries the response was YES. [2023-11-26 10:41:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19524 conditions, 6607 events. 2381/6607 cut-off events. For 14251/14574 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 53812 event pairs, 557 based on Foata normal form. 137/5881 useless extension candidates. Maximal degree in co-relation 18636. Up to 2057 conditions per place. [2023-11-26 10:41:55,774 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 214 selfloop transitions, 103 changer transitions 0/440 dead transitions. [2023-11-26 10:41:55,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 440 transitions, 3145 flow [2023-11-26 10:41:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:41:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:41:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3201 transitions. [2023-11-26 10:41:55,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7938988095238095 [2023-11-26 10:41:55,785 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3201 transitions. [2023-11-26 10:41:55,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3201 transitions. [2023-11-26 10:41:55,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:55,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3201 transitions. [2023-11-26 10:41:55,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 228.64285714285714) internal successors, (3201), 14 states have internal predecessors, (3201), 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 10:41:55,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 288.0) internal successors, (4320), 15 states have internal predecessors, (4320), 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 10:41:55,826 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 288.0) internal successors, (4320), 15 states have internal predecessors, (4320), 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 10:41:55,827 INFO L175 Difference]: Start difference. First operand has 225 places, 279 transitions, 1635 flow. Second operand 14 states and 3201 transitions. [2023-11-26 10:41:55,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 440 transitions, 3145 flow [2023-11-26 10:41:55,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 440 transitions, 3139 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-26 10:41:55,926 INFO L231 Difference]: Finished difference. Result has 250 places, 322 transitions, 2495 flow [2023-11-26 10:41:55,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2495, PETRI_PLACES=250, PETRI_TRANSITIONS=322} [2023-11-26 10:41:55,930 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 63 predicate places. [2023-11-26 10:41:55,931 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 322 transitions, 2495 flow [2023-11-26 10:41:55,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:41:55,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:55,933 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 10:41:55,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:41:55,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:41:55,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 655742878, now seen corresponding path program 1 times [2023-11-26 10:41:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054555135] [2023-11-26 10:41:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:56,923 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 10:41:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:56,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054555135] [2023-11-26 10:41:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054555135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:56,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:56,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:41:56,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660757112] [2023-11-26 10:41:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:41:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:41:56,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:42:00,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-26 10:42:00,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 322 transitions, 2495 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:42:00,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:00,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-26 10:42:00,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:02,959 INFO L124 PetriNetUnfolderBase]: 2745/7254 cut-off events. [2023-11-26 10:42:02,959 INFO L125 PetriNetUnfolderBase]: For 23827/24348 co-relation queries the response was YES. [2023-11-26 10:42:03,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 7254 events. 2745/7254 cut-off events. For 23827/24348 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 59064 event pairs, 728 based on Foata normal form. 159/6400 useless extension candidates. Maximal degree in co-relation 23556. Up to 2159 conditions per place. [2023-11-26 10:42:03,197 INFO L140 encePairwiseOnDemand]: 271/288 looper letters, 273 selfloop transitions, 121 changer transitions 0/517 dead transitions. [2023-11-26 10:42:03,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 517 transitions, 4594 flow [2023-11-26 10:42:03,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 10:42:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-26 10:42:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4526 transitions. [2023-11-26 10:42:03,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7857638888888889 [2023-11-26 10:42:03,220 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4526 transitions. [2023-11-26 10:42:03,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4526 transitions. [2023-11-26 10:42:03,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:03,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4526 transitions. [2023-11-26 10:42:03,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 226.3) internal successors, (4526), 20 states have internal predecessors, (4526), 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 10:42:03,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 288.0) internal successors, (6048), 21 states have internal predecessors, (6048), 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 10:42:03,255 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 288.0) internal successors, (6048), 21 states have internal predecessors, (6048), 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 10:42:03,255 INFO L175 Difference]: Start difference. First operand has 250 places, 322 transitions, 2495 flow. Second operand 20 states and 4526 transitions. [2023-11-26 10:42:03,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 517 transitions, 4594 flow [2023-11-26 10:42:03,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 517 transitions, 4592 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 10:42:03,484 INFO L231 Difference]: Finished difference. Result has 284 places, 357 transitions, 3420 flow [2023-11-26 10:42:03,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3420, PETRI_PLACES=284, PETRI_TRANSITIONS=357} [2023-11-26 10:42:03,486 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2023-11-26 10:42:03,486 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 357 transitions, 3420 flow [2023-11-26 10:42:03,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:42:03,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:03,493 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 10:42:03,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:42:03,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:42:03,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1581598266, now seen corresponding path program 2 times [2023-11-26 10:42:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902557177] [2023-11-26 10:42:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:03,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:04,482 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 10:42:04,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:04,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902557177] [2023-11-26 10:42:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902557177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:04,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:42:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964231314] [2023-11-26 10:42:04,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:04,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:42:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:42:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:42:08,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-26 10:42:08,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 357 transitions, 3420 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:42:08,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:08,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-26 10:42:08,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:12,708 INFO L124 PetriNetUnfolderBase]: 3346/9261 cut-off events. [2023-11-26 10:42:12,708 INFO L125 PetriNetUnfolderBase]: For 44798/45335 co-relation queries the response was YES. [2023-11-26 10:42:12,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33243 conditions, 9261 events. 3346/9261 cut-off events. For 44798/45335 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 81863 event pairs, 908 based on Foata normal form. 233/8179 useless extension candidates. Maximal degree in co-relation 32816. Up to 2235 conditions per place. [2023-11-26 10:42:12,880 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 304 selfloop transitions, 162 changer transitions 0/589 dead transitions. [2023-11-26 10:42:12,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 589 transitions, 6301 flow [2023-11-26 10:42:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 10:42:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-26 10:42:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4113 transitions. [2023-11-26 10:42:12,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7934027777777778 [2023-11-26 10:42:12,895 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4113 transitions. [2023-11-26 10:42:12,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4113 transitions. [2023-11-26 10:42:12,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:12,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4113 transitions. [2023-11-26 10:42:12,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 228.5) internal successors, (4113), 18 states have internal predecessors, (4113), 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 10:42:12,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 288.0) internal successors, (5472), 19 states have internal predecessors, (5472), 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 10:42:12,928 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 288.0) internal successors, (5472), 19 states have internal predecessors, (5472), 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 10:42:12,929 INFO L175 Difference]: Start difference. First operand has 284 places, 357 transitions, 3420 flow. Second operand 18 states and 4113 transitions. [2023-11-26 10:42:12,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 589 transitions, 6301 flow [2023-11-26 10:42:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 589 transitions, 6199 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-26 10:42:13,432 INFO L231 Difference]: Finished difference. Result has 310 places, 415 transitions, 4829 flow [2023-11-26 10:42:13,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=3331, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4829, PETRI_PLACES=310, PETRI_TRANSITIONS=415} [2023-11-26 10:42:13,436 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 123 predicate places. [2023-11-26 10:42:13,437 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 415 transitions, 4829 flow [2023-11-26 10:42:13,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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 10:42:13,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:13,439 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 10:42:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:42:13,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-26 10:42:13,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1928800710, now seen corresponding path program 3 times [2023-11-26 10:42:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:13,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192239678] [2023-11-26 10:42:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,355 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 10:42:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192239678] [2023-11-26 10:42:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192239678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:14,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:42:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624724769] [2023-11-26 10:42:14,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:14,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:42:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:42:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132