./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.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_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/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_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/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_c647733e-0836-4ae4-844c-c010639e891a/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 e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:47,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:47,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:17:47,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:47,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:47,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:47,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:47,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:47,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:47,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:47,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:47,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:47,408 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:47,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:47,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:47,410 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:47,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:47,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:47,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:47,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:47,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:47,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:47,413 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:17:47,414 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:17:47,414 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:47,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:47,415 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:47,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:47,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:47,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:47,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:47,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:47,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:47,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:47,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:47,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:47,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:47,420 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:47,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:47,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:47,421 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:47,422 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_c647733e-0836-4ae4-844c-c010639e891a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 [2023-11-06 22:17:47,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:47,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:47,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:47,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:47,824 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:47,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2023-11-06 22:17:50,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:51,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:51,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2023-11-06 22:17:51,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/data/7288de4c0/489ab332d8cb4a57a1e1b3150a3a7d3c/FLAG04083135d [2023-11-06 22:17:51,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/data/7288de4c0/489ab332d8cb4a57a1e1b3150a3a7d3c [2023-11-06 22:17:51,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:51,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:51,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:51,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:51,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:51,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:51,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32963815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51, skipping insertion in model container [2023-11-06 22:17:51,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:51,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:51,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:51,799 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:51,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:51,936 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:51,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51 WrapperNode [2023-11-06 22:17:51,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:51,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:51,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:51,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:51,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:51,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,025 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2023-11-06 22:17:52,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:52,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:52,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:52,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:52,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:52,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:52,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:52,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:52,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (1/1) ... [2023-11-06 22:17:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:52,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:52,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:52,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:17:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:17:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:17:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-06 22:17:52,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-06 22:17:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:17:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:17:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:52,220 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 22:17:52,415 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:52,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:52,680 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:52,689 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:52,690 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:17:52,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:52 BoogieIcfgContainer [2023-11-06 22:17:52,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:52,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:52,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:52,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:52,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:51" (1/3) ... [2023-11-06 22:17:52,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7fd790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:52, skipping insertion in model container [2023-11-06 22:17:52,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:51" (2/3) ... [2023-11-06 22:17:52,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7fd790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:52, skipping insertion in model container [2023-11-06 22:17:52,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:52" (3/3) ... [2023-11-06 22:17:52,703 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2023-11-06 22:17:52,714 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:17:52,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:52,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-06 22:17:52,728 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:17:52,809 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:17:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:52,975 INFO L124 PetriNetUnfolderBase]: 14/173 cut-off events. [2023-11-06 22:17:52,975 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:17:52,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 14/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-06 22:17:52,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:52,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:52,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:17:53,021 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:53,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 243 flow [2023-11-06 22:17:53,078 INFO L124 PetriNetUnfolderBase]: 14/173 cut-off events. [2023-11-06 22:17:53,078 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:17:53,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 14/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-06 22:17:53,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 2562 [2023-11-06 22:17:56,270 INFO L134 LiptonReduction]: Checked pairs total: 6660 [2023-11-06 22:17:56,271 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-06 22:17:56,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:56,293 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;@1f274dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:56,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 22:17:56,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:17:56,297 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-06 22:17:56,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:17:56,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:56,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:17:56,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-06 22:17:56,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash 13246404, now seen corresponding path program 1 times [2023-11-06 22:17:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410875467] [2023-11-06 22:17:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:56,497 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 22:17:56,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410875467] [2023-11-06 22:17:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410875467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:56,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:56,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:17:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670971529] [2023-11-06 22:17:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:56,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:17:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:17:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:56,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 220 [2023-11-06 22:17:56,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 73 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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 22:17:56,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:56,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 220 [2023-11-06 22:17:56,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:17:56,610 INFO L124 PetriNetUnfolderBase]: 27/134 cut-off events. [2023-11-06 22:17:56,611 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:17:56,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 134 events. 27/134 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 652 event pairs, 21 based on Foata normal form. 8/123 useless extension candidates. Maximal degree in co-relation 166. Up to 68 conditions per place. [2023-11-06 22:17:56,613 INFO L140 encePairwiseOnDemand]: 218/220 looper letters, 15 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-11-06 22:17:56,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 99 flow [2023-11-06 22:17:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:17:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:17:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2023-11-06 22:17:56,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-11-06 22:17:56,627 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2023-11-06 22:17:56,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2023-11-06 22:17:56,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:17:56,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2023-11-06 22:17:56,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 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 22:17:56,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 22:17:56,641 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 22:17:56,643 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 73 flow. Second operand 2 states and 235 transitions. [2023-11-06 22:17:56,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 99 flow [2023-11-06 22:17:56,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:17:56,648 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 69 flow [2023-11-06 22:17:56,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-06 22:17:56,654 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-06 22:17:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 69 flow [2023-11-06 22:17:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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 22:17:56,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:56,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:17:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:17:56,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-06 22:17:56,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash -155068597, now seen corresponding path program 1 times [2023-11-06 22:17:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387111518] [2023-11-06 22:17:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:56,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:56,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:17:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:17:56,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:17:56,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:17:56,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-06 22:17:56,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-06 22:17:56,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-06 22:17:56,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-06 22:17:56,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-06 22:17:56,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-06 22:17:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-06 22:17:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-06 22:17:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-06 22:17:56,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:17:56,763 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:17:56,765 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:17:56,766 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:17:56,792 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:17:56,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,842 INFO L124 PetriNetUnfolderBase]: 27/314 cut-off events. [2023-11-06 22:17:56,843 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 22:17:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 27/314 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1028 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-06 22:17:56,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:17:56,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 141 transitions, 298 flow [2023-11-06 22:17:56,917 INFO L124 PetriNetUnfolderBase]: 27/314 cut-off events. [2023-11-06 22:17:56,917 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 22:17:56,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 27/314 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1028 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-06 22:17:56,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 6468 [2023-11-06 22:17:59,794 INFO L134 LiptonReduction]: Checked pairs total: 32574 [2023-11-06 22:17:59,794 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-06 22:17:59,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:59,798 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;@1f274dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:59,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:17:59,802 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:17:59,802 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 22:17:59,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:17:59,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:17:59,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:17:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-06 22:17:59,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 665434576, now seen corresponding path program 1 times [2023-11-06 22:17:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:59,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944669358] [2023-11-06 22:17:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:59,869 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 22:17:59,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944669358] [2023-11-06 22:17:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944669358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:59,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:59,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:59,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207864942] [2023-11-06 22:17:59,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:59,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:59,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:59,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 244 [2023-11-06 22:17:59,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 22:17:59,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:17:59,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 244 [2023-11-06 22:17:59,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:00,329 INFO L124 PetriNetUnfolderBase]: 1239/2956 cut-off events. [2023-11-06 22:18:00,330 INFO L125 PetriNetUnfolderBase]: For 81/85 co-relation queries the response was YES. [2023-11-06 22:18:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5059 conditions, 2956 events. 1239/2956 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 20919 event pairs, 420 based on Foata normal form. 0/2516 useless extension candidates. Maximal degree in co-relation 3458. Up to 1173 conditions per place. [2023-11-06 22:18:00,356 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 48 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-06 22:18:00,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 301 flow [2023-11-06 22:18:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-06 22:18:00,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765027322404371 [2023-11-06 22:18:00,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-06 22:18:00,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-06 22:18:00,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:00,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-06 22:18:00,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 22:18:00,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 22:18:00,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 22:18:00,369 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 132 flow. Second operand 3 states and 422 transitions. [2023-11-06 22:18:00,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 301 flow [2023-11-06 22:18:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:00,373 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 184 flow [2023-11-06 22:18:00,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-11-06 22:18:00,374 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2023-11-06 22:18:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 184 flow [2023-11-06 22:18:00,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 22:18:00,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:00,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:00,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-06 22:18:00,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1707805578, now seen corresponding path program 1 times [2023-11-06 22:18:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601358492] [2023-11-06 22:18:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:00,497 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 22:18:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601358492] [2023-11-06 22:18:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601358492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318125299] [2023-11-06 22:18:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 244 [2023-11-06 22:18:00,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 22:18:00,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:00,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 244 [2023-11-06 22:18:00,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:00,959 INFO L124 PetriNetUnfolderBase]: 898/2431 cut-off events. [2023-11-06 22:18:00,960 INFO L125 PetriNetUnfolderBase]: For 474/484 co-relation queries the response was YES. [2023-11-06 22:18:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4537 conditions, 2431 events. 898/2431 cut-off events. For 474/484 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 18114 event pairs, 678 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 2403. Up to 1451 conditions per place. [2023-11-06 22:18:00,983 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 32 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:18:00,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 274 flow [2023-11-06 22:18:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-06 22:18:00,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2023-11-06 22:18:00,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-06 22:18:00,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-06 22:18:00,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:00,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-06 22:18:00,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 22:18:00,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 22:18:00,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 22:18:00,992 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 184 flow. Second operand 3 states and 392 transitions. [2023-11-06 22:18:00,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 274 flow [2023-11-06 22:18:01,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:01,003 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 184 flow [2023-11-06 22:18:01,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-06 22:18:01,006 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-11-06 22:18:01,006 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 184 flow [2023-11-06 22:18:01,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 22:18:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:18:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:18:01,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-06 22:18:01,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -99794114, now seen corresponding path program 1 times [2023-11-06 22:18:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:01,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887387842] [2023-11-06 22:18:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:01,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:01,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:01,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:01,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-06 22:18:01,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-06 22:18:01,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-06 22:18:01,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-06 22:18:01,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-06 22:18:01,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-06 22:18:01,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-06 22:18:01,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-06 22:18:01,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-06 22:18:01,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-06 22:18:01,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-06 22:18:01,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-06 22:18:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:18:01,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:18:01,113 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:18:01,114 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:18:01,152 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:18:01,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,246 INFO L124 PetriNetUnfolderBase]: 53/564 cut-off events. [2023-11-06 22:18:01,246 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 22:18:01,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 564 events. 53/564 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2236 event pairs, 1 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-11-06 22:18:01,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:01,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 164 transitions, 355 flow [2023-11-06 22:18:01,335 INFO L124 PetriNetUnfolderBase]: 53/564 cut-off events. [2023-11-06 22:18:01,335 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 22:18:01,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 564 events. 53/564 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2236 event pairs, 1 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-11-06 22:18:01,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 11214 [2023-11-06 22:18:03,970 INFO L134 LiptonReduction]: Checked pairs total: 55208 [2023-11-06 22:18:03,972 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-06 22:18:03,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:03,980 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;@1f274dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:03,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 22:18:03,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:03,986 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 22:18:03,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:03,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:03,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:18:03,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:18:03,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash 940453213, now seen corresponding path program 1 times [2023-11-06 22:18:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139242881] [2023-11-06 22:18:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:04,045 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 22:18:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139242881] [2023-11-06 22:18:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139242881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:04,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:04,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30203123] [2023-11-06 22:18:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:04,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 265 [2023-11-06 22:18:04,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 22:18:04,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:04,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 265 [2023-11-06 22:18:04,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:08,924 INFO L124 PetriNetUnfolderBase]: 19347/37426 cut-off events. [2023-11-06 22:18:08,925 INFO L125 PetriNetUnfolderBase]: For 1494/1572 co-relation queries the response was YES. [2023-11-06 22:18:09,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66132 conditions, 37426 events. 19347/37426 cut-off events. For 1494/1572 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 357936 event pairs, 7149 based on Foata normal form. 0/32216 useless extension candidates. Maximal degree in co-relation 33199. Up to 15316 conditions per place. [2023-11-06 22:18:09,324 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 62 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-11-06 22:18:09,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 406 flow [2023-11-06 22:18:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-11-06 22:18:09,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176100628930817 [2023-11-06 22:18:09,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-11-06 22:18:09,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-11-06 22:18:09,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:09,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-11-06 22:18:09,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 22:18:09,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 22:18:09,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 22:18:09,336 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 177 flow. Second operand 3 states and 491 transitions. [2023-11-06 22:18:09,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 406 flow [2023-11-06 22:18:09,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:18:09,346 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 255 flow [2023-11-06 22:18:09,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-06 22:18:09,352 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2023-11-06 22:18:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 255 flow [2023-11-06 22:18:09,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 22:18:09,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:09,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:18:09,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:18:09,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1801411579, now seen corresponding path program 1 times [2023-11-06 22:18:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:09,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440460939] [2023-11-06 22:18:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:09,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:09,468 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 22:18:09,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440460939] [2023-11-06 22:18:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440460939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:09,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537676302] [2023-11-06 22:18:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:09,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:09,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 265 [2023-11-06 22:18:09,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 22:18:09,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:09,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 265 [2023-11-06 22:18:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:13,047 INFO L124 PetriNetUnfolderBase]: 14231/30002 cut-off events. [2023-11-06 22:18:13,047 INFO L125 PetriNetUnfolderBase]: For 9303/9531 co-relation queries the response was YES. [2023-11-06 22:18:13,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59919 conditions, 30002 events. 14231/30002 cut-off events. For 9303/9531 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 301214 event pairs, 10382 based on Foata normal form. 0/25741 useless extension candidates. Maximal degree in co-relation 15126. Up to 19870 conditions per place. [2023-11-06 22:18:13,328 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 41 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-06 22:18:13,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 363 flow [2023-11-06 22:18:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:18:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-11-06 22:18:13,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811320754716981 [2023-11-06 22:18:13,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-11-06 22:18:13,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-11-06 22:18:13,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:13,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-11-06 22:18:13,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 22:18:13,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 22:18:13,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 22:18:13,343 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 255 flow. Second operand 3 states and 462 transitions. [2023-11-06 22:18:13,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 363 flow [2023-11-06 22:18:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:18:13,479 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 249 flow [2023-11-06 22:18:13,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-06 22:18:13,481 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-11-06 22:18:13,481 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 249 flow [2023-11-06 22:18:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 22:18:13,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:13,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:13,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:18:13,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:18:13,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash 972875562, now seen corresponding path program 1 times [2023-11-06 22:18:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502047371] [2023-11-06 22:18:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502047371] [2023-11-06 22:18:13,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502047371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:13,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513056659] [2023-11-06 22:18:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:13,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:13,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:13,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:13,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:18:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:13,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:18:13,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:13,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:13,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513056659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:13,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:18:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:18:13,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146647790] [2023-11-06 22:18:13,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:18:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:18:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:18:14,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 265 [2023-11-06 22:18:14,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 249 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 22:18:14,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:14,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 265 [2023-11-06 22:18:14,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:15,308 INFO L124 PetriNetUnfolderBase]: 3682/7519 cut-off events. [2023-11-06 22:18:15,308 INFO L125 PetriNetUnfolderBase]: For 3314/3314 co-relation queries the response was YES. [2023-11-06 22:18:15,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15565 conditions, 7519 events. 3682/7519 cut-off events. For 3314/3314 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 63598 event pairs, 514 based on Foata normal form. 612/7601 useless extension candidates. Maximal degree in co-relation 12856. Up to 3623 conditions per place. [2023-11-06 22:18:15,366 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 66 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-11-06 22:18:15,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 462 flow [2023-11-06 22:18:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 869 transitions. [2023-11-06 22:18:15,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465408805031446 [2023-11-06 22:18:15,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 869 transitions. [2023-11-06 22:18:15,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 869 transitions. [2023-11-06 22:18:15,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:15,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 869 transitions. [2023-11-06 22:18:15,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 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 22:18:15,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 22:18:15,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 22:18:15,381 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 249 flow. Second operand 6 states and 869 transitions. [2023-11-06 22:18:15,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 462 flow [2023-11-06 22:18:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:18:15,386 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 202 flow [2023-11-06 22:18:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-11-06 22:18:15,387 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-11-06 22:18:15,387 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 202 flow [2023-11-06 22:18:15,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 22:18:15,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:15,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:15,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c647733e-0836-4ae4-844c-c010639e891a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:15,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:18:15,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1372078584, now seen corresponding path program 1 times [2023-11-06 22:18:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770942922] [2023-11-06 22:18:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:15,908 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 22:18:15,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770942922] [2023-11-06 22:18:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770942922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:15,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:15,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:18:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122893519] [2023-11-06 22:18:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:15,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:18:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:18:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:18:16,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 265 [2023-11-06 22:18:16,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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 22:18:16,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:16,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 265 [2023-11-06 22:18:16,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:18:20,551 INFO L124 PetriNetUnfolderBase]: 26501/43273 cut-off events. [2023-11-06 22:18:20,551 INFO L125 PetriNetUnfolderBase]: For 16668/16669 co-relation queries the response was YES. [2023-11-06 22:18:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95893 conditions, 43273 events. 26501/43273 cut-off events. For 16668/16669 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 355527 event pairs, 11159 based on Foata normal form. 0/41142 useless extension candidates. Maximal degree in co-relation 74439. Up to 20612 conditions per place. [2023-11-06 22:18:20,880 INFO L140 encePairwiseOnDemand]: 250/265 looper letters, 126 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2023-11-06 22:18:20,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 181 transitions, 888 flow [2023-11-06 22:18:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:18:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:18:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2023-11-06 22:18:20,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547169811320755 [2023-11-06 22:18:20,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 882 transitions. [2023-11-06 22:18:20,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 882 transitions. [2023-11-06 22:18:20,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:20,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 882 transitions. [2023-11-06 22:18:20,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 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 22:18:20,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 22:18:20,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 22:18:20,896 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 202 flow. Second operand 6 states and 882 transitions. [2023-11-06 22:18:20,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 181 transitions, 888 flow [2023-11-06 22:18:20,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 181 transitions, 855 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-06 22:18:20,915 INFO L231 Difference]: Finished difference. Result has 75 places, 97 transitions, 409 flow [2023-11-06 22:18:20,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2023-11-06 22:18:20,915 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-06 22:18:20,916 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 97 transitions, 409 flow [2023-11-06 22:18:20,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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 22:18:20,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:20,917 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:18:20,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:18:20,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-06 22:18:20,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:20,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1642743155, now seen corresponding path program 1 times [2023-11-06 22:18:20,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:20,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025711866] [2023-11-06 22:18:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:20,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:20,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:20,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:20,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:18:20,981 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-06 22:18:20,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-06 22:18:20,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-06 22:18:20,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-06 22:18:20,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-06 22:18:20,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-06 22:18:20,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-06 22:18:20,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-06 22:18:20,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-06 22:18:20,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-06 22:18:20,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-06 22:18:20,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-06 22:18:20,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-06 22:18:20,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-06 22:18:20,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-06 22:18:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:18:20,991 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:18:20,992 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:18:20,992 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:18:21,033 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:18:21,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,237 INFO L124 PetriNetUnfolderBase]: 107/1034 cut-off events. [2023-11-06 22:18:21,238 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-06 22:18:21,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1034 events. 107/1034 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4945 event pairs, 6 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 584. Up to 32 conditions per place. [2023-11-06 22:18:21,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:21,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 414 flow [2023-11-06 22:18:21,511 INFO L124 PetriNetUnfolderBase]: 107/1034 cut-off events. [2023-11-06 22:18:21,512 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-06 22:18:21,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1034 events. 107/1034 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4945 event pairs, 6 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 584. Up to 32 conditions per place. [2023-11-06 22:18:21,547 INFO L119 LiptonReduction]: Number of co-enabled transitions 16968 [2023-11-06 22:18:24,158 INFO L134 LiptonReduction]: Checked pairs total: 90651 [2023-11-06 22:18:24,159 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-11-06 22:18:24,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:24,161 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;@1f274dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:24,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:18:24,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:18:24,164 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 22:18:24,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:24,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:18:24,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:18:24,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-06 22:18:24,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1246714529, now seen corresponding path program 1 times [2023-11-06 22:18:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:24,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432478221] [2023-11-06 22:18:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:24,188 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 22:18:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432478221] [2023-11-06 22:18:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432478221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:24,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:24,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500672418] [2023-11-06 22:18:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:24,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 298 [2023-11-06 22:18:24,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 22:18:24,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:18:24,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 298 [2023-11-06 22:18:24,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand