./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.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_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/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_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/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_05355fe4-21f9-496d-940b-941e0e7ba13f/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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:58,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:58,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:53:58,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:58,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:58,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:58,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:58,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:58,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:58,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:58,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:58,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:58,372 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:58,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:58,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:58,374 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:58,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:58,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:58,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:58,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:58,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:58,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:58,379 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:53:58,379 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:58,380 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:58,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:58,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:58,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:58,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:58,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:58,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:58,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:58,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:58,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:58,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:58,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:58,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:58,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:58,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:58,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:58,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:58,390 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_05355fe4-21f9-496d-940b-941e0e7ba13f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2023-11-26 11:53:58,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:58,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:58,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:58,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:58,779 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:58,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2023-11-26 11:54:02,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:02,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:02,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2023-11-26 11:54:02,705 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/data/bd6f3400d/a49e6833314645cb94b60e0a2eed5ca0/FLAGc6c8e5419 [2023-11-26 11:54:02,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/data/bd6f3400d/a49e6833314645cb94b60e0a2eed5ca0 [2023-11-26 11:54:02,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:02,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:02,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:02,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:02,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:02,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:02" (1/1) ... [2023-11-26 11:54:02,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eb4d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:02, skipping insertion in model container [2023-11-26 11:54:02,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:02" (1/1) ... [2023-11-26 11:54:02,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:03,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:03,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:03,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:03,948 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:03,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03 WrapperNode [2023-11-26 11:54:03,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:03,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:03,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:03,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:03,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,086 INFO L138 Inliner]: procedures = 310, calls = 77, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 369 [2023-11-26 11:54:04,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:04,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:04,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:04,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:04,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:04,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:04,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:04,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:04,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (1/1) ... [2023-11-26 11:54:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:04,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:04,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05355fe4-21f9-496d-940b-941e0e7ba13f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-11-26 11:54:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-11-26 11:54:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-11-26 11:54:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-11-26 11:54:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:54:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:54:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:54:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:54:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:54:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:54:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:54:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:04,390 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:54:04,689 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:04,695 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:05,694 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:05,726 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:05,726 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 11:54:05,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:05 BoogieIcfgContainer [2023-11-26 11:54:05,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:05,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:05,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:05,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:05,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:02" (1/3) ... [2023-11-26 11:54:05,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5459746c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:05, skipping insertion in model container [2023-11-26 11:54:05,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:03" (2/3) ... [2023-11-26 11:54:05,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5459746c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:05, skipping insertion in model container [2023-11-26 11:54:05,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:05" (3/3) ... [2023-11-26 11:54:05,742 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-11-26 11:54:05,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:54:05,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:05,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-26 11:54:05,769 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:54:06,032 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:54:06,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 422 transitions, 858 flow [2023-11-26 11:54:06,487 INFO L124 PetriNetUnfolderBase]: 21/420 cut-off events. [2023-11-26 11:54:06,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:54:06,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 420 events. 21/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1003 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 352. Up to 2 conditions per place. [2023-11-26 11:54:06,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 422 transitions, 858 flow [2023-11-26 11:54:06,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 395 places, 409 transitions, 827 flow [2023-11-26 11:54:06,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:06,574 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;@3533f579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:06,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-26 11:54:06,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:54:06,589 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-26 11:54:06,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:06,590 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] [2023-11-26 11:54:06,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-26 11:54:06,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1288590749, now seen corresponding path program 1 times [2023-11-26 11:54:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:06,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37276652] [2023-11-26 11:54:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37276652] [2023-11-26 11:54:07,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37276652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:07,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:07,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145597677] [2023-11-26 11:54:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:07,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:07,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:08,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 422 [2023-11-26 11:54:08,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 409 transitions, 827 flow. Second operand has 6 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:08,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:08,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 422 [2023-11-26 11:54:08,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:46,915 INFO L124 PetriNetUnfolderBase]: 74018/201625 cut-off events. [2023-11-26 11:54:46,915 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-11-26 11:54:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309318 conditions, 201625 events. 74018/201625 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 2183. Compared 2683002 event pairs, 65590 based on Foata normal form. 18386/202699 useless extension candidates. Maximal degree in co-relation 308375. Up to 107531 conditions per place. [2023-11-26 11:54:48,968 INFO L140 encePairwiseOnDemand]: 402/422 looper letters, 108 selfloop transitions, 5 changer transitions 0/386 dead transitions. [2023-11-26 11:54:48,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 386 transitions, 1007 flow [2023-11-26 11:54:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1886 transitions. [2023-11-26 11:54:49,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7448657187993681 [2023-11-26 11:54:49,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1886 transitions. [2023-11-26 11:54:49,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1886 transitions. [2023-11-26 11:54:49,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:49,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1886 transitions. [2023-11-26 11:54:49,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.3333333333333) internal successors, (1886), 6 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:49,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:49,053 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:49,056 INFO L175 Difference]: Start difference. First operand has 395 places, 409 transitions, 827 flow. Second operand 6 states and 1886 transitions. [2023-11-26 11:54:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 386 transitions, 1007 flow [2023-11-26 11:54:49,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 386 transitions, 1002 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:49,087 INFO L231 Difference]: Finished difference. Result has 388 places, 386 transitions, 786 flow [2023-11-26 11:54:49,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=786, PETRI_PLACES=388, PETRI_TRANSITIONS=386} [2023-11-26 11:54:49,095 INFO L281 CegarLoopForPetriNet]: 395 programPoint places, -7 predicate places. [2023-11-26 11:54:49,095 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 386 transitions, 786 flow [2023-11-26 11:54:49,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:49,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:49,099 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] [2023-11-26 11:54:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:54:49,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-26 11:54:49,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1321288852, now seen corresponding path program 1 times [2023-11-26 11:54:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521944099] [2023-11-26 11:54:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521944099] [2023-11-26 11:54:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521944099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:49,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378377084] [2023-11-26 11:54:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:49,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:50,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 422 [2023-11-26 11:54:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 386 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 294.3333333333333) internal successors, (1766), 6 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 422 [2023-11-26 11:54:50,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand