./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:04,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:04,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:00:04,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:04,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:04,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:04,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:04,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:04,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:04,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:04,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:04,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:04,839 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:04,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:04,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:04,842 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:04,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:04,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:04,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:04,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:04,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:04,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:04,847 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:00:04,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:04,848 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:04,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:04,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:04,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:04,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:04,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:04,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:04,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:04,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:04,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:04,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:04,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:04,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:04,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:04,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:04,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:04,857 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:04,858 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_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 [2023-11-06 23:00:05,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:05,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:05,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:05,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:05,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:05,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2023-11-06 23:00:08,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:08,891 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:08,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2023-11-06 23:00:08,931 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/data/e09736f46/092d109cc03643629cda0a706e95e1d6/FLAG31a1a60e7 [2023-11-06 23:00:08,950 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/data/e09736f46/092d109cc03643629cda0a706e95e1d6 [2023-11-06 23:00:08,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:08,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:08,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:08,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:08,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:08,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4b253d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08, skipping insertion in model container [2023-11-06 23:00:08,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:09,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:09,279 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:00:09,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:09,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:09,852 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:00:09,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:10,038 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:00:10,045 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:10,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10 WrapperNode [2023-11-06 23:00:10,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:10,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:10,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:10,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:10,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,182 INFO L138 Inliner]: procedures = 309, calls = 70, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 350 [2023-11-06 23:00:10,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:10,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:10,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:10,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:10,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:10,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:10,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:10,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:10,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (1/1) ... [2023-11-06 23:00:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:10,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:10,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff53def-faf9-407f-90f4-b14d197c19d7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-11-06 23:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-11-06 23:00:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-11-06 23:00:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-11-06 23:00:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:00:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:00:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:00:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:00:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:00:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:00:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:10,475 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:00:10,769 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:10,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:11,664 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:11,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:11,679 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 23:00:11,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:11 BoogieIcfgContainer [2023-11-06 23:00:11,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:11,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:00:11,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:00:11,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:00:11,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:08" (1/3) ... [2023-11-06 23:00:11,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:11, skipping insertion in model container [2023-11-06 23:00:11,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:10" (2/3) ... [2023-11-06 23:00:11,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:11, skipping insertion in model container [2023-11-06 23:00:11,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:11" (3/3) ... [2023-11-06 23:00:11,695 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2023-11-06 23:00:11,708 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:00:11,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:00:11,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 23:00:11,724 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:00:11,983 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:00:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 407 transitions, 828 flow [2023-11-06 23:00:12,360 INFO L124 PetriNetUnfolderBase]: 21/405 cut-off events. [2023-11-06 23:00:12,360 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:00:12,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 405 events. 21/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 985 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-11-06 23:00:12,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 407 transitions, 828 flow [2023-11-06 23:00:12,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 394 transitions, 797 flow [2023-11-06 23:00:12,399 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:00:12,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 394 transitions, 797 flow [2023-11-06 23:00:12,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 394 transitions, 797 flow [2023-11-06 23:00:12,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 394 transitions, 797 flow [2023-11-06 23:00:12,553 INFO L124 PetriNetUnfolderBase]: 21/394 cut-off events. [2023-11-06 23:00:12,553 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:00:12,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 394 events. 21/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 943 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-11-06 23:00:12,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 72100 [2023-11-06 23:00:25,231 INFO L134 LiptonReduction]: Checked pairs total: 412797 [2023-11-06 23:00:25,232 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-11-06 23:00:25,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:00:25,256 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=LoopsAndPotentialCycles, 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;@66acd007, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:00:25,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-06 23:00:25,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:00:25,258 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 23:00:25,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 23:00:25,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 23:00:25,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1428, now seen corresponding path program 1 times [2023-11-06 23:00:25,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99106413] [2023-11-06 23:00:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:25,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:25,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99106413] [2023-11-06 23:00:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99106413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 23:00:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976716059] [2023-11-06 23:00:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:25,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:00:25,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:00:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:00:25,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 650 [2023-11-06 23:00:25,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 202 transitions, 413 flow. Second operand has 2 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 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) [2023-11-06 23:00:25,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:25,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 650 [2023-11-06 23:00:25,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:28,091 INFO L124 PetriNetUnfolderBase]: 4113/12572 cut-off events. [2023-11-06 23:00:28,092 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 23:00:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 12572 events. 4113/12572 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 123508 event pairs, 3020 based on Foata normal form. 805/11657 useless extension candidates. Maximal degree in co-relation 18227. Up to 5788 conditions per place. [2023-11-06 23:00:28,238 INFO L140 encePairwiseOnDemand]: 641/650 looper letters, 46 selfloop transitions, 0 changer transitions 0/192 dead transitions. [2023-11-06 23:00:28,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 192 transitions, 485 flow [2023-11-06 23:00:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:00:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:00:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 833 transitions. [2023-11-06 23:00:28,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6407692307692308 [2023-11-06 23:00:28,305 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 833 transitions. [2023-11-06 23:00:28,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 833 transitions. [2023-11-06 23:00:28,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:28,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 833 transitions. [2023-11-06 23:00:28,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 416.5) internal successors, (833), 2 states have internal predecessors, (833), 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) [2023-11-06 23:00:28,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 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) [2023-11-06 23:00:28,341 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 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) [2023-11-06 23:00:28,343 INFO L175 Difference]: Start difference. First operand has 195 places, 202 transitions, 413 flow. Second operand 2 states and 833 transitions. [2023-11-06 23:00:28,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 192 transitions, 485 flow [2023-11-06 23:00:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 192 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:00:28,357 INFO L231 Difference]: Finished difference. Result has 190 places, 192 transitions, 388 flow [2023-11-06 23:00:28,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=388, PETRI_PLACES=190, PETRI_TRANSITIONS=192} [2023-11-06 23:00:28,363 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -5 predicate places. [2023-11-06 23:00:28,363 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 192 transitions, 388 flow [2023-11-06 23:00:28,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 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) [2023-11-06 23:00:28,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:28,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:28,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:00:28,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 23:00:28,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1056940223, now seen corresponding path program 1 times [2023-11-06 23:00:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008720098] [2023-11-06 23:00:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008720098] [2023-11-06 23:00:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008720098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:00:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932589056] [2023-11-06 23:00:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:28,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 650 [2023-11-06 23:00:28,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 192 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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) [2023-11-06 23:00:28,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:28,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 650 [2023-11-06 23:00:28,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:33,452 INFO L124 PetriNetUnfolderBase]: 7298/23839 cut-off events. [2023-11-06 23:00:33,452 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 23:00:33,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 23839 events. 7298/23839 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 263275 event pairs, 3020 based on Foata normal form. 0/20518 useless extension candidates. Maximal degree in co-relation 34236. Up to 5788 conditions per place. [2023-11-06 23:00:33,630 INFO L140 encePairwiseOnDemand]: 647/650 looper letters, 82 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2023-11-06 23:00:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 230 transitions, 632 flow [2023-11-06 23:00:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-11-06 23:00:33,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328205128205128 [2023-11-06 23:00:33,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-11-06 23:00:33,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-11-06 23:00:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:33,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-11-06 23:00:33,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 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) [2023-11-06 23:00:33,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2023-11-06 23:00:33,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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) [2023-11-06 23:00:33,659 INFO L175 Difference]: Start difference. First operand has 190 places, 192 transitions, 388 flow. Second operand 3 states and 1234 transitions. [2023-11-06 23:00:33,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 230 transitions, 632 flow [2023-11-06 23:00:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 230 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:00:33,673 INFO L231 Difference]: Finished difference. Result has 193 places, 193 transitions, 400 flow [2023-11-06 23:00:33,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=193, PETRI_TRANSITIONS=193} [2023-11-06 23:00:33,676 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -2 predicate places. [2023-11-06 23:00:33,677 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 193 transitions, 400 flow [2023-11-06 23:00:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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) [2023-11-06 23:00:33,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:33,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:33,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:00:33,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 23:00:33,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash 945798391, now seen corresponding path program 1 times [2023-11-06 23:00:33,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:33,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062440964] [2023-11-06 23:00:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062440964] [2023-11-06 23:00:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062440964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:34,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:34,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:00:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367942439] [2023-11-06 23:00:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:34,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:00:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:00:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:00:35,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 650 [2023-11-06 23:00:35,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 193 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 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) [2023-11-06 23:00:35,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:35,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 650 [2023-11-06 23:00:35,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:06,853 INFO L124 PetriNetUnfolderBase]: 114114/212914 cut-off events. [2023-11-06 23:01:06,853 INFO L125 PetriNetUnfolderBase]: For 2147/2147 co-relation queries the response was YES. [2023-11-06 23:01:07,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380284 conditions, 212914 events. 114114/212914 cut-off events. For 2147/2147 co-relation queries the response was YES. Maximal size of possible extension queue 3149. Compared 2253893 event pairs, 35319 based on Foata normal form. 0/190674 useless extension candidates. Maximal degree in co-relation 380279. Up to 108613 conditions per place. [2023-11-06 23:01:08,657 INFO L140 encePairwiseOnDemand]: 614/650 looper letters, 208 selfloop transitions, 81 changer transitions 0/395 dead transitions. [2023-11-06 23:01:08,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 395 transitions, 1382 flow [2023-11-06 23:01:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:01:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:01:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2301 transitions. [2023-11-06 23:01:08,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2023-11-06 23:01:08,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2301 transitions. [2023-11-06 23:01:08,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2301 transitions. [2023-11-06 23:01:08,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:08,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2301 transitions. [2023-11-06 23:01:08,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 383.5) internal successors, (2301), 6 states have internal predecessors, (2301), 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) [2023-11-06 23:01:08,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 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) [2023-11-06 23:01:08,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 650.0) internal successors, (4550), 7 states have internal predecessors, (4550), 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) [2023-11-06 23:01:08,694 INFO L175 Difference]: Start difference. First operand has 193 places, 193 transitions, 400 flow. Second operand 6 states and 2301 transitions. [2023-11-06 23:01:08,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 395 transitions, 1382 flow [2023-11-06 23:01:08,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 395 transitions, 1380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:08,711 INFO L231 Difference]: Finished difference. Result has 202 places, 273 transitions, 952 flow [2023-11-06 23:01:08,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=952, PETRI_PLACES=202, PETRI_TRANSITIONS=273} [2023-11-06 23:01:08,713 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, 7 predicate places. [2023-11-06 23:01:08,714 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 273 transitions, 952 flow [2023-11-06 23:01:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 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) [2023-11-06 23:01:08,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:08,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:01:08,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-06 23:01:08,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1419265716, now seen corresponding path program 1 times [2023-11-06 23:01:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946331259] [2023-11-06 23:01:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:09,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:09,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946331259] [2023-11-06 23:01:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946331259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:09,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:01:09,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76287133] [2023-11-06 23:01:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:09,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:01:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:01:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:01:10,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 650 [2023-11-06 23:01:10,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 273 transitions, 952 flow. Second operand has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 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) [2023-11-06 23:01:10,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:10,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 650 [2023-11-06 23:01:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand