./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/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_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/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_709a4e35-1d49-4012-9d2e-3f91a14d664c/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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:40,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:40,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 21:14:40,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:40,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:40,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:40,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:40,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:40,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:40,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:40,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:40,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:40,421 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:40,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:40,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:40,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:40,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:40,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:40,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:40,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:40,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:40,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:40,427 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 21:14:40,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:14:40,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:40,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:40,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:40,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:40,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:40,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:40,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:40,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:40,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:40,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:40,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:40,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:40,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:40,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:40,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:40,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:40,440 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:40,441 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_709a4e35-1d49-4012-9d2e-3f91a14d664c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2023-11-06 21:14:40,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:40,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:40,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:40,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:40,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:40,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-06 21:14:44,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:44,293 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:44,294 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-06 21:14:44,305 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/data/e1d75e481/806df34f8ffc41609229ddb688d30133/FLAG8e2604f1a [2023-11-06 21:14:44,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/data/e1d75e481/806df34f8ffc41609229ddb688d30133 [2023-11-06 21:14:44,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:44,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:44,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:44,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:44,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:44,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4c06c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44, skipping insertion in model container [2023-11-06 21:14:44,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:44,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:44,708 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:44,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:44,820 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:44,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44 WrapperNode [2023-11-06 21:14:44,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:44,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:44,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:44,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:44,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,884 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 281 [2023-11-06 21:14:44,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:44,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:44,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:44,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:44,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:44,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:44,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:44,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:44,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:44,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (1/1) ... [2023-11-06 21:14:45,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:45,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:45,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_709a4e35-1d49-4012-9d2e-3f91a14d664c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:14:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:14:45,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:14:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:14:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:14:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:14:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:14:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:14:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:45,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:14:45,118 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 21:14:45,306 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:45,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:46,367 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:46,390 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:46,390 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 21:14:46,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:46 BoogieIcfgContainer [2023-11-06 21:14:46,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:46,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:46,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:46,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:46,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:44" (1/3) ... [2023-11-06 21:14:46,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fb2fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:46, skipping insertion in model container [2023-11-06 21:14:46,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:44" (2/3) ... [2023-11-06 21:14:46,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fb2fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:46, skipping insertion in model container [2023-11-06 21:14:46,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:46" (3/3) ... [2023-11-06 21:14:46,403 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-06 21:14:46,414 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:14:46,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:46,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-06 21:14:46,426 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:14:46,688 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:14:46,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 659 places, 682 transitions, 1385 flow [2023-11-06 21:14:47,126 INFO L124 PetriNetUnfolderBase]: 33/679 cut-off events. [2023-11-06 21:14:47,127 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:14:47,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 679 events. 33/679 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1766 event pairs, 0 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 491. Up to 3 conditions per place. [2023-11-06 21:14:47,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 659 places, 682 transitions, 1385 flow [2023-11-06 21:14:47,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 632 places, 653 transitions, 1324 flow [2023-11-06 21:14:47,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:47,203 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 632 places, 653 transitions, 1324 flow [2023-11-06 21:14:47,207 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 632 places, 653 transitions, 1324 flow [2023-11-06 21:14:47,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 632 places, 653 transitions, 1324 flow [2023-11-06 21:14:47,396 INFO L124 PetriNetUnfolderBase]: 31/653 cut-off events. [2023-11-06 21:14:47,397 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:14:47,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 653 events. 31/653 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1745 event pairs, 0 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 491. Up to 3 conditions per place. [2023-11-06 21:14:47,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 91392 [2023-11-06 21:15:02,830 INFO L134 LiptonReduction]: Checked pairs total: 672207 [2023-11-06 21:15:02,830 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-11-06 21:15:02,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:02,868 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;@58f189df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:02,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-06 21:15:02,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:02,871 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:15:02,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:02,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:02,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:15:02,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:02,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2386, now seen corresponding path program 1 times [2023-11-06 21:15:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:02,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306740781] [2023-11-06 21:15:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:03,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306740781] [2023-11-06 21:15:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306740781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:15:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544243233] [2023-11-06 21:15:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:15:03,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:15:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:15:03,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 661 out of 1217 [2023-11-06 21:15:03,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 554 flow. Second operand has 2 states, 2 states have (on average 661.5) internal successors, (1323), 2 states have internal predecessors, (1323), 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 21:15:03,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:03,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 661 of 1217 [2023-11-06 21:15:03,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:10,451 INFO L124 PetriNetUnfolderBase]: 17240/48693 cut-off events. [2023-11-06 21:15:10,452 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-11-06 21:15:10,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71669 conditions, 48693 events. 17240/48693 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 606379 event pairs, 11467 based on Foata normal form. 4260/42056 useless extension candidates. Maximal degree in co-relation 66286. Up to 22462 conditions per place. [2023-11-06 21:15:11,024 INFO L140 encePairwiseOnDemand]: 1185/1217 looper letters, 69 selfloop transitions, 0 changer transitions 1/236 dead transitions. [2023-11-06 21:15:11,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 236 transitions, 630 flow [2023-11-06 21:15:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:15:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:15:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1424 transitions. [2023-11-06 21:15:11,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850451930977815 [2023-11-06 21:15:11,054 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1424 transitions. [2023-11-06 21:15:11,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1424 transitions. [2023-11-06 21:15:11,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:11,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1424 transitions. [2023-11-06 21:15:11,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 712.0) internal successors, (1424), 2 states have internal predecessors, (1424), 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 21:15:11,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1217.0) internal successors, (3651), 3 states have internal predecessors, (3651), 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 21:15:11,089 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1217.0) internal successors, (3651), 3 states have internal predecessors, (3651), 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 21:15:11,091 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 554 flow. Second operand 2 states and 1424 transitions. [2023-11-06 21:15:11,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 236 transitions, 630 flow [2023-11-06 21:15:11,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 236 transitions, 618 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:15:11,121 INFO L231 Difference]: Finished difference. Result has 223 places, 235 transitions, 475 flow [2023-11-06 21:15:11,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=475, PETRI_PLACES=223, PETRI_TRANSITIONS=235} [2023-11-06 21:15:11,127 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -34 predicate places. [2023-11-06 21:15:11,128 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 235 transitions, 475 flow [2023-11-06 21:15:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 661.5) internal successors, (1323), 2 states have internal predecessors, (1323), 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 21:15:11,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:11,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:15:11,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:11,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1565732931, now seen corresponding path program 1 times [2023-11-06 21:15:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871874876] [2023-11-06 21:15:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:11,394 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 21:15:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871874876] [2023-11-06 21:15:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871874876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239293456] [2023-11-06 21:15:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:11,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 648 out of 1217 [2023-11-06 21:15:11,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 235 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 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 21:15:11,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 648 of 1217 [2023-11-06 21:15:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:18,486 INFO L124 PetriNetUnfolderBase]: 24303/63210 cut-off events. [2023-11-06 21:15:18,486 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2023-11-06 21:15:18,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95319 conditions, 63210 events. 24303/63210 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 777356 event pairs, 12276 based on Foata normal form. 0/50729 useless extension candidates. Maximal degree in co-relation 95316. Up to 31826 conditions per place. [2023-11-06 21:15:19,274 INFO L140 encePairwiseOnDemand]: 1211/1217 looper letters, 100 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-11-06 21:15:19,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 259 transitions, 729 flow [2023-11-06 21:15:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2050 transitions. [2023-11-06 21:15:19,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614900027389756 [2023-11-06 21:15:19,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2050 transitions. [2023-11-06 21:15:19,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2050 transitions. [2023-11-06 21:15:19,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:19,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2050 transitions. [2023-11-06 21:15:19,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 683.3333333333334) internal successors, (2050), 3 states have internal predecessors, (2050), 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 21:15:19,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:19,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:19,312 INFO L175 Difference]: Start difference. First operand has 223 places, 235 transitions, 475 flow. Second operand 3 states and 2050 transitions. [2023-11-06 21:15:19,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 259 transitions, 729 flow [2023-11-06 21:15:19,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 259 transitions, 729 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:19,325 INFO L231 Difference]: Finished difference. Result has 221 places, 233 transitions, 481 flow [2023-11-06 21:15:19,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=221, PETRI_TRANSITIONS=233} [2023-11-06 21:15:19,328 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -36 predicate places. [2023-11-06 21:15:19,329 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 233 transitions, 481 flow [2023-11-06 21:15:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 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 21:15:19,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:19,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:19,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:15:19,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:19,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1430744033, now seen corresponding path program 1 times [2023-11-06 21:15:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793758256] [2023-11-06 21:15:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:19,483 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 21:15:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793758256] [2023-11-06 21:15:19,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793758256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:19,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:19,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246519369] [2023-11-06 21:15:19,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:19,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 648 out of 1217 [2023-11-06 21:15:19,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 233 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 650.6666666666666) internal successors, (1952), 3 states have internal predecessors, (1952), 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 21:15:19,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:19,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 648 of 1217 [2023-11-06 21:15:19,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:24,653 INFO L124 PetriNetUnfolderBase]: 23382/48534 cut-off events. [2023-11-06 21:15:24,654 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2023-11-06 21:15:24,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80511 conditions, 48534 events. 23382/48534 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 501840 event pairs, 5291 based on Foata normal form. 0/37317 useless extension candidates. Maximal degree in co-relation 80507. Up to 30366 conditions per place. [2023-11-06 21:15:25,126 INFO L140 encePairwiseOnDemand]: 1211/1217 looper letters, 100 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2023-11-06 21:15:25,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 255 transitions, 741 flow [2023-11-06 21:15:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2046 transitions. [2023-11-06 21:15:25,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603944124897289 [2023-11-06 21:15:25,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2046 transitions. [2023-11-06 21:15:25,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2046 transitions. [2023-11-06 21:15:25,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:25,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2046 transitions. [2023-11-06 21:15:25,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 682.0) internal successors, (2046), 3 states have internal predecessors, (2046), 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 21:15:25,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:25,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:25,158 INFO L175 Difference]: Start difference. First operand has 221 places, 233 transitions, 481 flow. Second operand 3 states and 2046 transitions. [2023-11-06 21:15:25,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 255 transitions, 741 flow [2023-11-06 21:15:25,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 255 transitions, 741 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:25,170 INFO L231 Difference]: Finished difference. Result has 220 places, 231 transitions, 487 flow [2023-11-06 21:15:25,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=220, PETRI_TRANSITIONS=231} [2023-11-06 21:15:25,173 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -37 predicate places. [2023-11-06 21:15:25,173 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 231 transitions, 487 flow [2023-11-06 21:15:25,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 650.6666666666666) internal successors, (1952), 3 states have internal predecessors, (1952), 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 21:15:25,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:25,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:25,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:15:25,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:25,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash -554846427, now seen corresponding path program 1 times [2023-11-06 21:15:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160532295] [2023-11-06 21:15:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:25,271 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 21:15:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160532295] [2023-11-06 21:15:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160532295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316896579] [2023-11-06 21:15:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:25,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 645 out of 1217 [2023-11-06 21:15:25,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 231 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 648.0) internal successors, (1944), 3 states have internal predecessors, (1944), 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 21:15:25,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:25,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 645 of 1217 [2023-11-06 21:15:25,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:32,012 INFO L124 PetriNetUnfolderBase]: 23770/62276 cut-off events. [2023-11-06 21:15:32,012 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2023-11-06 21:15:32,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95381 conditions, 62276 events. 23770/62276 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 763866 event pairs, 15981 based on Foata normal form. 0/49807 useless extension candidates. Maximal degree in co-relation 95376. Up to 31302 conditions per place. [2023-11-06 21:15:32,752 INFO L140 encePairwiseOnDemand]: 1212/1217 looper letters, 75 selfloop transitions, 1 changer transitions 0/227 dead transitions. [2023-11-06 21:15:32,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 227 transitions, 631 flow [2023-11-06 21:15:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2012 transitions. [2023-11-06 21:15:32,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510818953711312 [2023-11-06 21:15:32,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2012 transitions. [2023-11-06 21:15:32,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2012 transitions. [2023-11-06 21:15:32,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:32,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2012 transitions. [2023-11-06 21:15:32,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.6666666666666) internal successors, (2012), 3 states have internal predecessors, (2012), 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 21:15:32,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:32,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:32,785 INFO L175 Difference]: Start difference. First operand has 220 places, 231 transitions, 487 flow. Second operand 3 states and 2012 transitions. [2023-11-06 21:15:32,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 227 transitions, 631 flow [2023-11-06 21:15:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 227 transitions, 631 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:32,791 INFO L231 Difference]: Finished difference. Result has 218 places, 227 transitions, 481 flow [2023-11-06 21:15:32,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=218, PETRI_TRANSITIONS=227} [2023-11-06 21:15:32,794 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -39 predicate places. [2023-11-06 21:15:32,794 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 227 transitions, 481 flow [2023-11-06 21:15:32,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 648.0) internal successors, (1944), 3 states have internal predecessors, (1944), 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 21:15:32,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:32,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:32,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:15:32,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:32,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1926422238, now seen corresponding path program 1 times [2023-11-06 21:15:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:32,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514986888] [2023-11-06 21:15:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:32,869 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 21:15:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514986888] [2023-11-06 21:15:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514986888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:32,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763733071] [2023-11-06 21:15:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:32,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 648 out of 1217 [2023-11-06 21:15:32,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 651.3333333333334) internal successors, (1954), 3 states have internal predecessors, (1954), 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 21:15:32,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:32,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 648 of 1217 [2023-11-06 21:15:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:39,125 INFO L124 PetriNetUnfolderBase]: 24016/59042 cut-off events. [2023-11-06 21:15:39,125 INFO L125 PetriNetUnfolderBase]: For 1761/1761 co-relation queries the response was YES. [2023-11-06 21:15:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92497 conditions, 59042 events. 24016/59042 cut-off events. For 1761/1761 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 690737 event pairs, 5397 based on Foata normal form. 0/46803 useless extension candidates. Maximal degree in co-relation 92491. Up to 31176 conditions per place. [2023-11-06 21:15:39,567 INFO L140 encePairwiseOnDemand]: 1211/1217 looper letters, 102 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2023-11-06 21:15:39,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 250 transitions, 752 flow [2023-11-06 21:15:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2046 transitions. [2023-11-06 21:15:39,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603944124897289 [2023-11-06 21:15:39,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2046 transitions. [2023-11-06 21:15:39,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2046 transitions. [2023-11-06 21:15:39,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:39,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2046 transitions. [2023-11-06 21:15:39,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 682.0) internal successors, (2046), 3 states have internal predecessors, (2046), 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 21:15:39,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:39,594 INFO L175 Difference]: Start difference. First operand has 218 places, 227 transitions, 481 flow. Second operand 3 states and 2046 transitions. [2023-11-06 21:15:39,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 250 transitions, 752 flow [2023-11-06 21:15:39,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 250 transitions, 751 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:39,601 INFO L231 Difference]: Finished difference. Result has 216 places, 225 transitions, 486 flow [2023-11-06 21:15:39,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2023-11-06 21:15:39,605 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -41 predicate places. [2023-11-06 21:15:39,605 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 486 flow [2023-11-06 21:15:39,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.3333333333334) internal successors, (1954), 3 states have internal predecessors, (1954), 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 21:15:39,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:39,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:39,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:15:39,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:39,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -630822021, now seen corresponding path program 1 times [2023-11-06 21:15:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:39,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616736829] [2023-11-06 21:15:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:39,677 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 21:15:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:39,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616736829] [2023-11-06 21:15:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616736829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328042890] [2023-11-06 21:15:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:39,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 645 out of 1217 [2023-11-06 21:15:39,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 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 21:15:39,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:39,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 645 of 1217 [2023-11-06 21:15:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:46,485 INFO L124 PetriNetUnfolderBase]: 23877/61878 cut-off events. [2023-11-06 21:15:46,485 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES. [2023-11-06 21:15:46,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95423 conditions, 61878 events. 23877/61878 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 1434. Compared 752144 event pairs, 15861 based on Foata normal form. 0/49314 useless extension candidates. Maximal degree in co-relation 95417. Up to 31552 conditions per place. [2023-11-06 21:15:47,042 INFO L140 encePairwiseOnDemand]: 1212/1217 looper letters, 75 selfloop transitions, 1 changer transitions 0/221 dead transitions. [2023-11-06 21:15:47,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 221 transitions, 630 flow [2023-11-06 21:15:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2012 transitions. [2023-11-06 21:15:47,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510818953711312 [2023-11-06 21:15:47,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2012 transitions. [2023-11-06 21:15:47,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2012 transitions. [2023-11-06 21:15:47,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:47,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2012 transitions. [2023-11-06 21:15:47,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.6666666666666) internal successors, (2012), 3 states have internal predecessors, (2012), 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 21:15:47,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:47,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1217.0) internal successors, (4868), 4 states have internal predecessors, (4868), 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 21:15:47,072 INFO L175 Difference]: Start difference. First operand has 216 places, 225 transitions, 486 flow. Second operand 3 states and 2012 transitions. [2023-11-06 21:15:47,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 221 transitions, 630 flow [2023-11-06 21:15:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 221 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:15:47,081 INFO L231 Difference]: Finished difference. Result has 214 places, 221 transitions, 480 flow [2023-11-06 21:15:47,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1217, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=214, PETRI_TRANSITIONS=221} [2023-11-06 21:15:47,085 INFO L281 CegarLoopForPetriNet]: 257 programPoint places, -43 predicate places. [2023-11-06 21:15:47,085 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 221 transitions, 480 flow [2023-11-06 21:15:47,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 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 21:15:47,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:47,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:47,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2023-11-06 21:15:47,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -630805424, now seen corresponding path program 1 times [2023-11-06 21:15:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141642434] [2023-11-06 21:15:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:47,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:47,145 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 21:15:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141642434] [2023-11-06 21:15:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141642434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:47,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:47,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746164408] [2023-11-06 21:15:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:47,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 653 out of 1217 [2023-11-06 21:15:47,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 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 21:15:47,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:47,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 653 of 1217 [2023-11-06 21:15:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand